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I'm a new Epic owner, still learning the quirks of this phone. I am having issues with my battery giving me a proper charge. I need a reliable GPS for a 3,000 mile road trip coming up, and this phone is all I got... so it needs to work. My issue is that the phone never seems to know how much battery it really has, and often appears to loose battery even while charging, but I'm not convinced that it actually is. So I did a little test. Went on a 15 drive, everything off except for GPS. Played music through the phone, and had the nav up the whole time, with the phone charging.
Started at 70% battery. After getting to my destination in 15 minutes, I was at 64%.
I rebooted my phone, and when it came back up, the battery was at 24%. I did some shopping, and texted my wife pretty much the whole time, phone stayed at 24% for the entire trip.
Rebooted again when I got back to the car, and it jumped up to 36%. Same deal on the ride home, music + nav up for a 15 minute ride. It was still at 36% percent this time when I got home.
So, what's with all the inconsistency here? Is this normal? Should I get a new battery? I'm running SFR 1.2 with Genocide kernel, 200-1000 conservative, and everything undervolted slightly.
Have you tried fully charging your battery and wiping the battery stats through Clockworks? Also I'll have to do some digging but if I remember correctly the reboot thing is a known bug. I believe they said it has something to do with the reboot script. I'll see if I can dig up the link for ya.
MustangMan9498 said:
Have you tried fully charging your battery and wiping the battery stats through Clockworks? Also I'll have to do some digging but if I remember correctly the reboot thing is a known bug. I believe they said it has something to do with the reboot script. I'll see if I can dig up the link for ya.
Click to expand...
Click to collapse
I've wiped battery stats between flashes, but not recently, and not on a full charge. I will try this.
Let us know how it goes, so I can try it.
Well after doing that, my battery life yesterday was probably the longest it's ever been with this phone. Next time I go out, I'll throw it on the car charger again and see if it still drains while using it.
Yeah the proper way to calibrate it is by charging it fully first after a successful flash and then wiping the stats. I usually do a full charge with it on then turn it off and wait til it fully charges again (led turns blue) then boot into CWM and wipe its stats.
No luck, tried it out yesterday and got the same thing... battery drains while on the car charger (tried two chargers). Also get the jumps in % when rebooting, but only sometimes.
I ordered an extended battery for now, hopefully it will do the trick to get me through my move.
It's not an answer likely to make you happy, but the type of car charger you use and the car's electrical output are a factor here. I have personally seen a large difference in recharge time and ability depending on those factors. It may be worth your while to gamble on another $15-30 for a well-reviewed charger. It's definitely made a difference for me.
DroidApprentice said:
It's not an answer likely to make you happy, but the type of car charger you use and the car's electrical output are a factor here. I have personally seen a large difference in recharge time and ability depending on those factors. It may be worth your while to gamble on another $15-30 for a well-reviewed charger. It's definitely made a difference for me.
Click to expand...
Click to collapse
That's what I did. I had a cheap charger, and it didn't work well so I dropped $20 on a Griffin one, and it was no better. I never had a problem keeping my HD2 or Nexus S 4G.
Also, just for ****s, had the phone on a wall charger and made sure to keep the screen alive texting and playing WF... slowly but surely the battery drained while on the charger. So, not my car either. Seems like the screen being on absolutely murders my battery.
Sounds like a pretty scientific review, so that result sucks. However I would actually now throw some suspicion on your battery and/or phone itself. Reason I say so is that I am a heavy phone user at my office and also have screen awake and a lot of use for music and video playing and 4G audio streaming while on wall charger, and consistently get into the upper 90s or full charge while using it so much. See if Sprint will throw a new battery your way, and maybe that will help?
DroidApprentice said:
Sounds like a pretty scientific review, so that result sucks. However I would actually now throw some suspicion on your battery and/or phone itself. Reason I say so is that I am a heavy phone user at my office and also have screen awake and a lot of use for music and video playing and 4G audio streaming while on wall charger, and consistently get into the upper 90s or full charge while using it so much. See if Sprint will throw a new battery your way, and maybe that will help?
Click to expand...
Click to collapse
We'll see how the extended battery I ordered does.
I didn't get the phone subsidized through Sprint, so it has no warranty. I doubt they would help me.
Download Spareparts and see if there are any processes hogging the system, especially in the partial wake lock list. It very well could be a faulty battery although I can't recall anyone ever having a battery issue on this board.
stir fry a lot said:
Download Spareparts and see if there are any processes hogging the system, especially in the partial wake lock list. It very well could be a faulty battery although I can't recall anyone ever having a battery issue on this board.
Click to expand...
Click to collapse
Nope, doesn't look like it.
BTW, I am running rooted stock EC05, no other mods except some frozen apps and Roam Control. I wouldn't wager that necessarily makes the difference, but you never know.
Try a different kernel?
You may want to start fresh and Odin back to stock and reroot.
stir fry a lot said:
Try a different kernel?
You may want to start fresh and Odin back to stock and reroot.
Click to expand...
Click to collapse
I experienced this on both the kernel that comes with SFR, and Genocide.
I may go back to a rooted stock... but I have been really happy with every other aspect of this rom.
You might want to Odin and start over. The only thing I can think of is maybe something is wonky with the modem or something.
stir fry a lot said:
You might want to Odin and start over. The only thing I can think of is maybe something is wonky with the modem or something.
Click to expand...
Click to collapse
I have one more thing to try first.
I've been using Launcher 7. There are lots of complaints about this being a battery hog. Going to give things a shot with ADW and see how I do.
Never heard of Launcher 7. I've seen ADW on the Market, but never tried it. I've used TouchWiz when I first got my phone, but lost it when I rooted with SFR. I am using LauncherPro right now, so try that one.
Also, I read that GPS is a major battery drain for smartphone. I never had a problem using GPS on my Exclaim, so maybe its the GPS drinking up a lot of the battery fluid?
Tbh, you should not worry if your vehicle has an adapter (either itself or cig lighter) and plug it in when the battery goes low.
ThunderOKC said:
Never heard of Launcher 7. I've seen ADW on the Market, but never tried it. I've used TouchWiz when I first got my phone, but lost it when I rooted with SFR. I am using LauncherPro right now, so try that one.
Also, I read that GPS is a major battery drain for smartphone. I never had a problem using GPS on my Exclaim, so maybe its the GPS drinking up a lot of the battery fluid?
Tbh, you should not worry if your vehicle has an adapter (either itself or cig lighter) and plug it in when the battery goes low.
Click to expand...
Click to collapse
Launcher 7 mimics WP7. I'm all for a clean, simple look, and as such, really like it. But its a CPU hog.
ADW is wonderful, and for most of my time with android its all i've used. I've got the paid version. Went ahead and installed it, and so far, so good. Setting it up with my phone on a charger, and my battery is finally going in the right direction while using the phone
I'll go for a drive somewhere tomorrow and see if it charges in the car while running ADW.
I've read a bunch of threads but haven't found a solution to my particular problem.
I've had my Nexus since April, and all was fine until about 3-4 weeks ago when I noticed that no matter how long I left the phone charging it wouldn't go past 88%. Getting married in August and working a lot of overtime, I have been frustrated by this issue but have done nothing about it, so over time I've been watching as it was maxing out at 84%, then 80% then 76%, 74%, 72%, 70%...it now will not charge past 66% and by the end of the week it will probably be 62%!
So, I have tried three different chargers (one that came with Nexus, the one tht came with my fiancee's HTC One X, and a no name). I have replaced the battery (a friend has the same phone with a spare battery). Nothing changes. This is clearly not the "well it reaches 100% and then stops charging even while plugged in to save the battery" thing that most threads talk about. It's not the charger and it's not the battery.
It's the phone (or the software). I'm not positive I even understand what "rooting" a phone is so it's safe to say that it is not rooted. It is an out of the box Galaxy Nexus that has only had official updates (currently running Jelly Bean but the problem did begin before it updated from ICS).
I'm praying for a solution as I bought the phone in Hong Kong, and therefor cannot return it.
DynoNobel said:
I've read a bunch of threads but haven't found a solution to my particular problem.
I've had my Nexus since April, and all was fine until about 3-4 weeks ago when I noticed that no matter how long I left the phone charging it wouldn't go past 88%. Getting married in August and working a lot of overtime, I have been frustrated by this issue but have done nothing about it, so over time I've been watching as it was maxing out at 84%, then 80% then 76%, 74%, 72%, 70%...it now will not charge past 66% and by the end of the week it will probably be 62%!
So, I have tried three different chargers (one that came with Nexus, the one tht came with my fiancee's HTC One X, and a no name). I have replaced the battery (a friend has the same phone with a spare battery). Nothing changes. This is clearly not the "well it reaches 100% and then stops charging even while plugged in to save the battery" thing that most threads talk about. It's not the charger and it's not the battery.
It's the phone (or the software). I'm not positive I even understand what "rooting" a phone is so it's safe to say that it is not rooted. It is an out of the box Galaxy Nexus that has only had official updates (currently running Jelly Bean but the problem did begin before it updated from ICS).
I'm praying for a solution as I bought the phone in Hong Kong, and therefor cannot return it.
Click to expand...
Click to collapse
Your mistake was most likely your purchasing location.
Sent from my Galaxy Nexus using xda premium
Fire n mage said:
Your mistake was most likely your purchasing location.
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
Well it's not exactly like I bought it from a mom and pop shop or from the guy with a suitcase on the corner. It was purchased from Fortress, which is a subsidiary of Hutchison Whampoa which is an international conglomerate that operates in the US, Canada, and all over Europe as well. Don't confuse Hong Kong with mainland China, there is no difference in quality between this phone and one purchased in USA
Did battery calibration help at all? I'm starting to think that either the software is showing a wrong percentage (which in case you can calibrate it) or you have to get it checked.
kyokeun1234 said:
Did battery calibration help at all? I'm starting to think that either the software is showing a wrong percentage (which in case you can calibrate it) or you have to get it checked.
Click to expand...
Click to collapse
I downloaded a calibration app, and realized the phone needs to be rooted. The app said that it would only calibrate the phone when it was in a 100% charged state.
The default battery meter said 66%, app called power circle said 66%, and the battery calibration app said 66%
DynoNobel said:
I downloaded a calibration app, and realized the phone needs to be rooted. The app said that it would only calibrate the phone when it was in a 100% charged state.
The default battery meter said 66%, app called power circle said 66%, and the battery calibration app said 66%
Click to expand...
Click to collapse
Ok you can calibrate the battery status by draining the battery until the power turns off and then just turn it on again (while charging obviously) and then charge it to the max and then hopefully it charges to 100%
Sent from my Galaxy Nexus using xda app-developers app
kyokeun1234 said:
Ok you can calibrate the battery status by draining the battery until the power turns off and then just turn it on again (while charging obviously) and then charge it to the max and then hopefully it charges to 100%
Sent from my Galaxy Nexus using xda app-developers app
Click to expand...
Click to collapse
Oh, ya I definitely did that, more than once, with both batteries. I let it completely die on it's own (which isn't hard as the battery life is noticeably shorter since it won't charge all the way). I also let it drain to 1% and then charged it full. I tried draining until it shut itself off and then charging it full while it was shut off, and then again with it powered on during charging. Whether on or off, it continues to tell me it is charging, but never reaches higher than the numbers i posted above (currently 66%).
DynoNobel said:
Oh, ya I definitely did that, more than once, with both batteries. I let it completely die on it's own (which isn't hard as the battery life is noticeably shorter since it won't charge all the way). I also let it drain to 1% and then charged it full. I tried draining until it shut itself off and then charging it full while it was shut off, and then again with it powered on during charging. Whether on or off, it continues to tell me it is charging, but never reaches higher than the numbers i posted above (currently 66%).
Click to expand...
Click to collapse
dial *#*#4636#*#* and go to "Battery... something" and check what it says at Battery health
bgdxv said:
dial *#*#4636#*#* and go to "Battery... something" and check what it says at Battery health
Click to expand...
Click to collapse
Says:
Battery Status: Discharging
Power plug: Unplugged
Battery Level: 40
Scale: 100
Health: Good
Voltage: 3603 mV
Temperature: 35.0 C
Technology: Li-ion
Time Since Boot: 53:52:47
I will try this again once I've gotten home and charged it all the way (back to 66%...) and have it plugged in when I input the code
DynoNobel said:
Says:
Battery Status: Discharging
Power plug: Unplugged
Battery Level: 40
Scale: 100
Health: Good
Voltage: 3603 mV
Temperature: 35.0 C
Technology: Li-ion
Time Since Boot: 53:52:47
I will try this again once I've gotten home and charged it all the way (back to 66%...) and have it plugged in when I input the code
Click to expand...
Click to collapse
you can still calibrate your battery with this app
https://play.google.com/store/apps/...xLDEsImNvbS5uZW1hLmJhdHRlcnljYWxpYnJhdGlvbiJd
just untick wait til 100% if your battery is still coming up odd
it definitely sounds like a software issue to me
I'm having exactly the same problem. My phone was purchased in a different country and had several different firmwares (we've used it for kernel development) so it's not under warranty anymore.
At some point I flashed the stock firmware (it was 4.0.2 back then) from Google's website and started using it as a normal phone. Everything was fine until at some point (somewhere in September) I noticed it stopped charging past 89%. After that I saw this figure go all the way down to 39% and that's where it is now. It charges to 39 within an hour or so, then the charging status while being plugged says "not charging". If I leave it like this it can go to 60 over a few more hours, in this case if I go into charging status I can sometimes see "Charging (USB)" which basically means lower charging current (seems like some kind of trickle charge situation).
I think that it started after I saw a different charging glitch (that one is quite popular on the Internet) - when the phone doesn't see that it's plugged I fixed that one with bending the USB "tongue".
I've tried switching the battery with a properly working GN phone - my device sees a different charge level than the working phone. The working phone had shown 95% on my battery and 90% on its own battery. My phone had shown somewhat like 35 and 30 respectively.
I've tried multiple different stock firmwares (4.1, 4.1.1, 4.2.1). I've tried full reset with data wipe and clean firmware load a number of times. I've tried battery stats reset, battery pull, full discharge (in bootloader and another phone) - nothing helps.
It looks like the phone detects the current battery charge incorrectly and while the circuitry prevents the battery from overcharging and turns off charging when the battery is at full capacity, the software for some reason sees 39% instead of 99% and thus turns off the phone when it sees 0 (and it's really somewhere around 60%).
The two things that I haven't tried were flashing a different kernel (CM? AOKP?) and replacing the USB port board.
I don't want to mess around with different kernels because I don't really believe that it'll help, but I did order the USB board.
I'd appreciate if someone with similar problem shared their experiences.
P.S.: Just took my *#*#4636#*#* battery info screen: it sees that it's at 24%, sees that it's plugged into AC and it's not charging.
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This is strange. I posted a thread a while back about the same issue. Theres also another one too.
http://forum.xda-developers.com/showthread.php?t=2080383
http://forum.xda-developers.com/showthread.php?t=2059289
Everyone's seems to have gone through every possible combination of chargers, batteries, roms, kernels...idk to me it's just freaky that these threads (which i never recall seeing ANY outlining the same issue) suddenly are popping up. Mine started soon after i flashed my first 4.2 rom. my battery info also reports similarly to what others are saying (good health, 100 scale, 3.9v). i just think its very strange that more and more people are complaining of this.
another side note, whenever im using my phone while its plugged in, the battery seems to drain pretty quickly (even though it is saying ac-charging). anyone else getting this too?
crowmallet said:
This is strange. I posted a thread a while back about the same issue. Theres also another one too.
http://forum.xda-developers.com/showthread.php?t=2080383
http://forum.xda-developers.com/showthread.php?t=2059289
Everyone's seems to have gone through every possible combination of chargers, batteries, roms, kernels...idk to me it's just freaky that these threads (which i never recall seeing ANY outlining the same issue) suddenly are popping up. Mine started soon after i flashed my first 4.2 rom. my battery info also reports similarly to what others are saying (good health, 100 scale, 3.9v). i just think its very strange that more and more people are complaining of this.
another side note, whenever im using my phone while its plugged in, the battery seems to drain pretty quickly (even though it is saying ac-charging). anyone else getting this too?
Click to expand...
Click to collapse
Hey, thanks for pointing out those threads, looks like they all describe the same issue. I guess, a moderator needs to unite them or something.
When I'm using an AC plugged phone - the battery drain seems to be of similar scale as charging in WiFi web browsing scenario. If I'm streaming a high-res video over WiFi, sometime the drain is higher than charge rate and it dies even being plugged, saw that a couple of times.
If I'm using it as a GPS in a car, it drains faster than it charges with a regular auto charger (not sure of its amperage), however I haven't checked this scenario before the problems with charge started.
To address my experience with the issues mentioned in other threads:
- I tried my stock battery in another gnex that doesn't have the problem - that phone saw a different charge level in my battery from what my phone had been showing. Also my phone had shown incorrect value for the other battery which leads me to believe that it's not a battery issue.
- I had the thought that dirt and dust in the connections might be an issue. I disassembled the phone (following this video https://www.youtube.com/watch?v=6sD6LRfJHSk), checked and cleaned all the connections (not with alcohol, though). Except for the inside of the USB port all the internals were pretty clean to begin with. The procedure didn't solve the problem.
Now, the only suspect I have remaining is the charging circuitry. I have ordered this part http://cnn.cn/shop/samsung-i9250-galaxy-nexus-microusb-connector-flex-cable-p-15348.html (also available on ebay) and will see if it will solve the problem. Luckily it's fairly easy to replace, requires no soldering (though it does require to disassemble the phone completely).
Corvin666 said:
Hey, thanks for pointing out those threads, looks like they all describe the same issue. I guess, a moderator needs to unite them or something.
When I'm using an AC plugged phone - the battery drain seems to be of similar scale as charging in WiFi web browsing scenario. If I'm streaming a high-res video over WiFi, sometime the drain is higher than charge rate and it dies even being plugged, saw that a couple of times.
If I'm using it as a GPS in a car, it drains faster than it charges with a regular auto charger (not sure of its amperage), however I haven't checked this scenario before the problems with charge started.
To address my experience with the issues mentioned in other threads:
- I tried my stock battery in another gnex that doesn't have the problem - that phone saw a different charge level in my battery from what my phone had been showing. Also my phone had shown incorrect value for the other battery which leads me to believe that it's not a battery issue.
- I had the thought that dirt and dust in the connections might be an issue. I disassembled the phone (following this video https://www.youtube.com/watch?v=6sD6LRfJHSk), checked and cleaned all the connections (not with alcohol, though). Except for the inside of the USB port all the internals were pretty clean to begin with. The procedure didn't solve the problem.
Now, the only suspect I have remaining is the charging circuitry. I have ordered this part http://cnn.cn/shop/samsung-i9250-galaxy-nexus-microusb-connector-flex-cable-p-15348.html (also available on ebay) and will see if it will solve the problem. Luckily it's fairly easy to replace, requires no soldering (though it does require to disassemble the phone completely).
Click to expand...
Click to collapse
Really hoping you figure this out. After spending far too long trying to fix mine, I broke down and replaced it. It is currently a paper-weight. When plugged in it says it is charging, but won't go past 0%. I plugged it in on the weekend for approx 30 hours and upon unplugging it immediately shut down. I have an external battery charger and two batteries and I can charge the battery full and put it back in the phone and it will still say 0%.
If it means anything to anybody, this problem starting happening to my phone when it was in stock condition (hadn't been unlocked or rooted) but after it was updated to 4.2 through the standard consumer method of updating.
DynoNobel said:
Really hoping you figure this out. After spending far too long trying to fix mine, I broke down and replaced it. It is currently a paper-weight. When plugged in it says it is charging, but won't go past 0%. I plugged it in on the weekend for approx 30 hours and upon unplugging it immediately shut down. I have an external battery charger and two batteries and I can charge the battery full and put it back in the phone and it will still say 0%.
If it means anything to anybody, this problem starting happening to my phone when it was in stock condition (hadn't been unlocked or rooted) but after it was updated to 4.2 through the standard consumer method of updating.
Click to expand...
Click to collapse
Well I've finally given up. I broke down and bought another battery on amazon (samsung verizon oem one) with near certainty it wouldn't help. It didn't. I've been running stock now and I'm going into the Verizon store tomorrow to see what they can do (if anything). I'm sure they will give me the run around though (oh its probably just the battery etc).
Corvin666 said:
Now, the only suspect I have remaining is the charging circuitry. I have ordered this part (also available on ebay) and will see if it will solve the problem. Luckily it's fairly easy to replace, requires no soldering (though it does require to disassemble the phone completely).
Click to expand...
Click to collapse
Did you have any success with replacing this part?
leadthrower21 said:
Did you have any success with replacing this part?
Click to expand...
Click to collapse
I'm still waiting for it to arrive. I live in Eastern Europe and mail is really crappy here.
same story for me
Corvin666 said:
I'm having exactly the same problem. My phone was purchased in a different country and had several different firmwares (we've used it for kernel development) so it's not under warranty anymore.
At some point I flashed the stock firmware (it was 4.0.2 back then) from Google's website and started using it as a normal phone. Everything was fine until at some point (somewhere in September) I noticed it stopped charging past 89%. After that I saw this figure go all the way down to 39% and that's where it is now. It charges to 39 within an hour or so, then the charging status while being plugged says "not charging". If I leave it like this it can go to 60 over a few more hours, in this case if I go into charging status I can sometimes see "Charging (USB)" which basically means lower charging current (seems like some kind of trickle charge situation).
I think that it started after I saw a different charging glitch (that one is quite popular on the Internet) - when the phone doesn't see that it's plugged I fixed that one with bending the USB "tongue".
I've tried switching the battery with a properly working GN phone - my device sees a different charge level than the working phone. The working phone had shown 95% on my battery and 90% on its own battery. My phone had shown somewhat like 35 and 30 respectively.
I've tried multiple different stock firmwares (4.1, 4.1.1, 4.2.1). I've tried full reset with data wipe and clean firmware load a number of times. I've tried battery stats reset, battery pull, full discharge (in bootloader and another phone) - nothing helps.
It looks like the phone detects the current battery charge incorrectly and while the circuitry prevents the battery from overcharging and turns off charging when the battery is at full capacity, the software for some reason sees 39% instead of 99% and thus turns off the phone when it sees 0 (and it's really somewhere around 60%).
The two things that I haven't tried were flashing a different kernel (CM? AOKP?) and replacing the USB port board.
I don't want to mess around with different kernels because I don't really believe that it'll help, but I did order the USB board.
I'd appreciate if someone with similar problem shared their experiences.
P.S.: Just took my *#*#4636#*#* battery info screen: it sees that it's at 24%, sees that it's plugged into AC and it's not charging.
Click to expand...
Click to collapse
Same story for me. Exact same issue. Ive flashed roms (CM, PA, Unique, Minco) and the issue does not go away. I did change the USB board. It did not help. I think too that the circuitry prevents the battery from overcharging. Battery Indicator App says FULLY CHARGED even when android reports 0% charge.
---------- Post added at 12:16 PM ---------- Previous post was at 12:09 PM ----------
Corvin666 said:
I'm still waiting for it to arrive. I live in Eastern Europe and mail is really crappy here.
Click to expand...
Click to collapse
I have the same problem. Ive replaced the board 2 times. It does not help
Got my USB board today, replaced it and it didn't help. Short of changing the mainboard, I'm out of ideas
I'm having this same problem. Purchases a Nexus off Craiglist the other day (with forwarning of this battery problem) and figured I could fix it easily with a new ROM or by wiping battery stats. Unfortunately nothing I try seems to have any effect. I've used different batteries and charged them fully with an external charger. As soon as I put them in this phone they read 64%. So Frustrating!!!!
Hi guys -
My 8.4 has been driving me crazy for the past week. It is not rooted, running the stock Samsung image. The battery percentage seems to be wildly inaccurate. I've read through many of the battery threads here (most seem to deal with the inability to charge completely), but I have noticed some that seem to resemble my problem. The solution seems to be to pop the back off and replug the battery. I have not done that, and frankly, I don't think that's the issue here.
Symptoms: Battery appears to drain unevenly - will drop several 10's of % instantaneously during mixed use, and sometimes level off again. I haven't found any runaway processes. Bottom line, overall less then expected battery life followed by the system shutting down. HOWEVER, if I then reboot, it will boot up anywhere between about 5 and 30% remaining - and will continue to run. Sometimes it will drain quickly again, other times it will run for several more hours. Sometimes if I connect the charger after shutdown, it will immediately jump to 40% upon reboot.
Experiment: Drain battery smoothly after a full charge by looping a local video, and track battery percentage and voltage. When system automatically shuts down, reboot (it pops back to 30% or whatever) and continue. Keep rebooting and running until a reboot registers 0% and immediately shuts back down.
Result: Battery drains VERY evenly and consistently. It's only the android percentage that seems to be erratic and cause the system to shut down. I've attached a graph of what I see. The spikes represent points where I rebooted. Blue line = battery percentage (left axis), orange line = battery voltage in mV (right axis)
So given this, I'm having a hard time believing it's a battery connection issue. My uneducated guess is that unplugging the battery works for some because it forces android to recalibrate the battery meter. I've been unsuccessful in getting it to recal by charge/discharge cycles.
Does anyone have any thoughts or ideas on what I should do next? Is there a way to force a recal of the 0% point without rooting? As a side note, I find it odd that my Nexus 7 simply doesn't boot when it hits zero - just shows a battery symbol. Seems odd that the Samsung let's me constantly boot the thing.
Any thoughts would be appreciated!!
Mike
MikeNE said:
Hi guys -.....,..................
Mike
Click to expand...
Click to collapse
Hi! I own a tab S and some users get this problem also on the tab pro. Its something with the battery connection to the device which causes the gauge to be all wonky. Usually problems like you described need to be replaced by Samsung. If you are under warranty, then they'll replace it for free of charge. Better to be extra safe! Hope this helps!
DUHAsianSKILLZ said:
Hi! I own a tab S and some users get this problem also on the tab pro. Its something with the battery connection to the device which causes the gauge to be all wonky. Usually problems like you described need to be replaced by Samsung. If you are under warranty, then they'll replace it for free of charge. Better to be extra safe! Hope this helps!
Click to expand...
Click to collapse
Thanks...yeah, I saw all the comments about the battery connection. As I said in my post, I'm still struggling to believe that it's a connection issue when the battery voltage - reported through a battery widget - is very reliable and steady. It's only the percentage that's wrong. Sounds more like a software issue to me. If it was a connection issue, I'd think the battery voltage would be all over the place too.
Frankly, I'd rather not send it in if I can avoid it (no service centers local). I'd like to explore all possible other options first. Any other ideas on how to force a real recalibration?
Thanks,
Mike
MikeNE said:
Thanks...yeah, I saw all the comments about the battery connection. As I said in my post, I'm still struggling to believe that it's a connection issue when the battery voltage - reported through a battery widget - is very reliable and steady. It's only the percentage that's wrong. Sounds more like a software issue to me. If it was a connection issue, I'd think the battery voltage would be all over the place too.
Frankly, I'd rather not send it in if I can avoid it (no service centers local). I'd like to explore all possible other options first. Any other ideas on how to force a real recalibration?
Thanks,
Mike
Click to expand...
Click to collapse
When your device is fully charged, My guess is to turn your brightness up to the max and open an app that's like intense graphical games or Google earth. As long its stresses your CPU and GPU. That should make your battery drain really quick and cause random reboots because of the meter. Keep doing so till it reaches 0%. Then recharge. If that doesn't work then I don't know. I've done that many times after I flashed a custom ROM so it would calibrate. Doing that would draw all the power out hopefully
DUHAsianSKILLZ said:
When your device is fully charged, My guess is to turn your brightness up to the max and open an app that's like intense graphical games or Google earth. As long its stresses your CPU and GPU. That should make your battery drain really quick and cause random reboots because of the meter. Keep doing so till it reaches 0%. Then recharge. If that doesn't work then I don't know. I've done that many times after I flashed a custom ROM so it would calibrate. Doing that would draw all the power out hopefully
Click to expand...
Click to collapse
Ok...I gave up. I've tried the drain thing multiple ways. I don't want to root the thing or install a custom ROM because I won't be able to use it on my company network. I called Samsung and set up a return. What really bothers me about this is that without an explanation, it's likely to just happen again -because again, I'm still convinced it's software related.
Thanks anyway,
Mike
Sorry to hear that. Please come back when your device is returned from RMA and tell us how it's doing...
CalvinH said:
Sorry to hear that. Please come back when your device is returned from RMA and tell us how it's doing...
Click to expand...
Click to collapse
Will do Calvin - thanks. For the record, I tried one more thing before I boxed it up. I reflashed the firmware with Samsung Kies3. It all went smoothly, and I had high hopes....but shortly after logging in to start setting it up, the battery immediately dropped from 99 to 88....so no luck. I'll be shipping it out tomorrow. I'll post my findings when it returns.
Mike
Well guys - I got my GTP back earlier this week. The actually fixed it in one day and shipped it right back to me. Unfortunately, there was no explanation or description of the repair on any of the paperwork or their website - so I have no idea what they did. Regardless, it appears to be functioning normally now. I fully charged it when I got it, and then ran it down to zero through random usage throughout 2 days...and when it hit zero and shut off, that was it. It wouldn't turn on again (which is what I would expect). I charged it back up, and it's working fine again. So far, so good.
Bottom line, I guess I had some kind of a battery problem, but it appears to be working now. As I said before, I just hate problems with no explanation - it means they are likely to happen again. I guess time will tell...
Mike
Hello everybody.
I just want to share with you guys what I found out.
I've been using custom ROMs and custom kernels for LG V30, and I faced a lot of issues. The most common issue is overheating, especially on charging or using mobile data.
I use Anker's adapter that supports Quick Charge 3.0, and an Anker USB-C to USB-3.0 cable. I use Ampere app to see how the battery is charge.
On custom ROMs, the ampere number (mA) changes every few seconds, jumps up and down with big gap, and the phone gets very hot.
On stock ROM (US99820H) in my case, mA number is very stable. It increases or decreases slowly and doesn't jump up and down. On plugging in, min and max mA are equal. The phone is just a little bit hotter than before plugging in.
So I just wanted to share my own experience with you guys. If you want you phone to last long, use Stock ROMs, disable bloatwares and useless system apps.
I'm going to purchase the battery and change it myself for better battery life. I wanted to change to another phone but for now, this is the best phone for music.
Please discuss if you disagree with me or have a solution for custom ROMs.
minhntp said:
Hello everybody.
I just want to share with you guys what I found out.
I've been using custom ROMs and custom kernels for LG V30, and I faced a lot of issues. The most common issue is overheating, especially on charging or using mobile data.
I use Anker's adapter that supports Quick Charge 3.0, and an Anker USB-C to USB-3.0 cable. I use Ampere app to see how the battery is charge.
On custom ROMs, the ampere number (mA) changes every few seconds, jumps up and down with big gap, and the phone gets very hot.
On stock ROM (US99820H) in my case, mA number is very stable. It increases or decreases slowly and doesn't jump up and down. On plugging in, min and max mA are equal. The phone is just a little bit hotter than before plugging in.
So I just wanted to share my own experience with you guys. If you want you phone to last long, use Stock ROMs, disable bloatwares and useless system apps.
I'm going to purchase the battery and change it myself for better battery life. I wanted to change to another phone but for now, this is the best phone for music.
Please discuss if you disagree with me or have a solution for custom ROMs.
Click to expand...
Click to collapse
I also felt the same...Though the charging speed on custom roms is higher...in terms of stability of current, Stock Rom is the best.
minhntp said:
Hello everybody.
I just want to share with you guys what I found out.
I've been using custom ROMs and custom kernels for LG V30, and I faced a lot of issues. The most common issue is overheating, especially on charging or using mobile data.
I use Anker's adapter that supports Quick Charge 3.0, and an Anker USB-C to USB-3.0 cable. I use Ampere app to see how the battery is charge.
On custom ROMs, the ampere number (mA) changes every few seconds, jumps up and down with big gap, and the phone gets very hot.
On stock ROM (US99820H) in my case, mA number is very stable. It increases or decreases slowly and doesn't jump up and down. On plugging in, min and max mA are equal. The phone is just a little bit hotter than before plugging in.
So I just wanted to share my own experience with you guys. If you want you phone to last long, use Stock ROMs, disable bloatwares and useless system apps.
I'm going to purchase the battery and change it myself for better battery life. I wanted to change to another phone but for now, this is the best phone for music.
Please discuss if you disagree with me or have a solution for custom ROMs.
Click to expand...
Click to collapse
In terms of stability, I have different results, when I charge using a custom rom the phone tends to stay cool, but when I used the stock rom the phone got a lot hotter then before charging.
Custom ROMs may not be utilizing QC properly. QC 2.0 has few discrete voltage/current steps, while QC 3.0 has many (200mA increments iirc) designed to strike a balance between charging speed and heat. Maybe it's getting stuck in QC 2.0 mode and the temperature feedback isn't working properly?
You could just use a non-fast-charging wireless charger, if you're only charging up at night. 5v/~1A is pretty much harmless, it's just on the slow side of things.
fyi, battery capacity (as tracked by the charging controller driver, I guess) is stored at sys/class/power_supply/bms/charge_full; it defaults to design capacity until a full charge cycle has been completed* and then I suppose is revised each time the driver tracks less energy has been stored after a complete charge. Cycle count, cell resistance and a couple other things are also stored here. I think all values are persistent until the battery is physically disconnected.
Might be worth doing a full discharge+charge (to 100%, then let it sit for a few hours to saturate) to see if your battery is worn enough to warrant pulling the phone apart. Accubattery does seem to be more or less accurate, so you charge while it's on you can get a real-time idea of how much has gone in.
* a full charge might be from 1% to 100%. It might be from 5% to 100%. Who knows! I've charged from 2% to 100% a couple times and not had cycle_count increase.
Also, if you do go shopping, beware of undersized batteries. I bought an "OE spec" battery a while ago that was obviously thinner and lighter than the original; it weighed some 12.5% less and only took a 3000mah charge, more or less lining up with the reduced weight. The seller was "tele*cell", and I very much doubt they're the only ones pulling this crap. Record the contents of power_supply/bms if they're important to you, too, as they zero out upon battery disconnect.
edit: hmm, thinking about it...bms = Battery Management System? (not this one specifically, of course)
Septfox said:
Also, if you do go shopping, beware of undersized batteries. I bought an "OE spec" battery a while ago that was obviously thinner and lighter than the original; it weighed some 12.5% less and only took a 3000mah charge, more or less lining up with the reduced weight. The seller was "tele*cell", and I very much doubt they're the only ones pulling this crap. Record the contents of power_supply/bms if they're important to you, too, as they zero out upon battery disconnect.
Click to expand...
Click to collapse
It is possible that you bought a smaller battery - but you should know that the capacity of Li** batteries increases within the first couple of cycles. Also usually the nominal capacity might be different from the real (typical) capacity. So you would need to meassure a.new original battery against your replacement battery (not take the value LG tells us for.granted)
daniu said:
It is possible that you bought a smaller battery - but you should know that the capacity of Li** batteries increases within the first couple of cycles. Also usually the nominal capacity might be different from the real (typical) capacity. So you would need to meassure a.new original battery against your replacement battery (not take the value LG tells us for.granted)
Click to expand...
Click to collapse
Li-po capacity hasn't really gone anywhere in a while, and I wouldn't expect cheap eBay batteries to be using the newest and best chemistry. It was definitely undersize/weight; I attached some pictures.
Because I wanted to be absolutely sure before I called the seller on it, I purposefully ran it four full cycles, then built up another two during normal use. The best capacity that the BMS ever rated it for was 2980mah, while Accubattery put in something like...3060mah once with subsequent charges in the 2900-3000 range.
While I get what you're saying, I find it unlikely that the BMS would set to the expected design capacity if they were using undersize batteries from the factory.
The reason being that at a guess, the battery "fuel gauge" is probably based on capacity_full, which = capacity_full_design until set. With a new phone that isn't charged to 100% (thus setting capacity_full), if using the phone down to 1% you'd risk either a) the phone suddenly shutting down at ~10% or b) overdischarge damage if the battery is actually less than the phone's design capacity.
Kind of a corner case though, I'll admit, since this would only be on the first run.
Last, I submit my own OEM battery for consideration: prior to taking it out, it had accumulated 537 cycles and had a recorded capacity of 2485mah. That's about what I'd expect from a 3300mah battery that was almost certainly used "normally" e.g. discharged daily, charged nightly and left on the tap at full charge for hours on end.
Like you said, though, the only way to know for sure would be testing a new OEM battery, and we've been fresh out of those for a year and a half now. Maybe someone could nab one from one of their newer models and test for science? I already have too many spare lipo cells laying around.
Septfox said:
Custom ROMs may not be utilizing QC properly. QC 2.0 has few discrete voltage/current steps, while QC 3.0 has many (200mA increments iirc) designed to strike a balance between charging speed and heat. Maybe it's getting stuck in QC 2.0 mode and the temperature feedback isn't working properly?
You could just use a non-fast-charging wireless charger, if you're only charging up at night. 5v/~1A is pretty much harmless, it's just on the slow side of things.
fyi, battery capacity (as tracked by the charging controller driver, I guess) is stored at sys/class/power_supply/bms/charge_full; it defaults to design capacity until a full charge cycle has been completed* and then I suppose is revised each time the driver tracks less energy has been stored after a complete charge. Cycle count, cell resistance and a couple other things are also stored here. I think all values are persistent until the battery is physically disconnected.
Might be worth doing a full discharge+charge (to 100%, then let it sit for a few hours to saturate) to see if your battery is worn enough to warrant pulling the phone apart. Accubattery does seem to be more or less accurate, so you charge while it's on you can get a real-time idea of how much has gone in.
* a full charge might be from 1% to 100%. It might be from 5% to 100%. Who knows! I've charged from 2% to 100% a couple times and not had cycle_count increase.
Also, if you do go shopping, beware of undersized batteries. I bought an "OE spec" battery a while ago that was obviously thinner and lighter than the original; it weighed some 12.5% less and only took a 3000mah charge, more or less lining up with the reduced weight. The seller was "tele*cell", and I very much doubt they're the only ones pulling this crap. Record the contents of power_supply/bms if they're important to you, too, as they zero out upon battery disconnect.
edit: hmm, thinking about it...bms = Battery Management System? (not this one specifically, of course)
Click to expand...
Click to collapse
Do you have sleep problem after changing the battery? After changing the battery, my phone doesn't go to sleep when the screen is off, so the battery just keeps draining. I'm using stock ROM. I don't know if this is a software of hardware issue.
minhntp said:
Do you have sleep problem after changing the battery? After changing the battery, my phone doesn't go to sleep when the screen is off, so the battery just keeps draining. I'm using stock ROM. I don't know if this is a software of hardware issue.
Click to expand...
Click to collapse
The only thing notable that happened was the battery stats getting wiped. Otherwise the phone behaved normally.
Try getting BetterBatteryStats, second post has the newest apk attached (2.3 iirc).
Start it up to get it established, Set Custom Ref. from the menu, shut the screen off for...ehh...20min.
Turn it back on, select Custom in the left drop-down menu and Current in the right drop-down menu.
Check Kernel Wakelocks and Partial Wakelocks using the top drop-down menu to see if anything sticks out.
Septfox said:
Li-po capacity hasn't really gone anywhere in a while, and I wouldn't expect cheap eBay batteries to be using the newest and best chemistry. It was definitely undersize/weight; I attached some pictures.
Because I wanted to be absolutely sure before I called the seller on it, I purposefully ran it four full cycles, then built up another two during normal use. The best capacity that the BMS ever rated it for was 2980mah, while Accubattery put in something like...3060mah once with subsequent charges in the 2900-3000 range.
While I get what you're saying, I find it unlikely that the BMS would set to the expected design capacity if they were using undersize batteries from the factory.
The reason being that at a guess, the battery "fuel gauge" is probably based on capacity_full, which = capacity_full_design until set. With a new phone that isn't charged to 100% (thus setting capacity_full), if using the phone down to 1% you'd risk either a) the phone suddenly shutting down at ~10% or b) overdischarge damage if the battery is actually less than the phone's design capacity.
Kind of a corner case though, I'll admit, since this would only be on the first run.
Last, I submit my own OEM battery for consideration: prior to taking it out, it had accumulated 537 cycles and had a recorded capacity of 2485mah. That's about what I'd expect from a 3300mah battery that was almost certainly used "normally" e.g. discharged daily, charged nightly and left on the tap at full charge for hours on end.
Like you said, though, the only way to know for sure would be testing a new OEM battery, and we've been fresh out of those for a year and a half now. Maybe someone could nab one from one of their newer models and test for science? I already have too many spare lipo cells laying around.
Click to expand...
Click to collapse
What is the full capacity when you put those 2 battery in?
I just bought a battery. This new one has 6 symbols each line (like the one you bought) and 2 lines of manufactured date. The old (original) one has 5 symbols each line and also 2 lines of manufatured date.
When I check "charge_full" after full charging, it shows 3312000 for the original battery and 3230000 for the new one, while the "charge_full_design" being 3312000 for both battery.
minhntp said:
What is the full capacity when you put those 2 battery in?
I just bought a battery. This new one has 6 symbols each line (like the one you bought) and 2 lines of manufactured date. The old (original) one has 5 symbols each line and also 2 lines of manufatured date.
When I check "charge_full" after full charging, it shows 3312000 for the original battery and 3230000 for the new one, while the "charge_full_design" being 3312000 for both battery.
Click to expand...
Click to collapse
All three batteries I've had showed the same 3312000 charge_full_design. But I'm not sure if this is relevant to us, aside from as a reference to compare to.
Out of curiosity and so I don't purposely give outright bad information, I went and looked at the kernel (up on github courtesy of lunar-kernels).
3300mah design capacity is set when the kernel is built (BLT34 battery profile, which is grabbed by the power manager).
I'm not sure where the number "3312000" specifically is coming from. I can't read the source for the BMS well enough to tell why it's coming up with that number, aside from it's a calculated result based on more than just the design capacity.
Based on the above and other behavior, I don't think any permanent information is stored with or retrieved from the battery itself; design parameters are set in the BLT34 profile and then the BMS amends certain things as it takes measurements. It assumes that whatever attached battery is actually 3300/3312mah until proven otherwise (calibrated with sufficient cycling).
Said measurements are stored ~somewhere~ outside of the ROM, recovery and download mode - mine persisted through the LAFsploit process and TWRP on both partitions - and cleared when power is lost. Maybe they're stored in RAM somewhere? Maybe the BMS notices the discontinuity in power and assumes a battery change, resetting everything? I'll try making sense of the kernel source to see...
The labeling difference is curious, and something I hadn't really given thought to. The newer ones have NOM and NYCE marks, which are Mexican safety approval things. It's interesting that the originals don't have them; maybe because LG doesn't make phones for the Mexican market and thus saw no need? I doubt these third-party manufacturers have gone out of their way to actually obtain said approval...probably just stuck them there to satisfy customs.
I bought a battery from another seller and installed it this weekend; it uses the 12-symbol style as well, has date+date code like the original (dated a rather shiny 2019.09.08!), and weighs the expected 48g/has an OE-style "stepped" back making it thicker.
Seems to charge fully and otherwise work as expected. charge_full still = charge_full_design, I'm not sure if this is because the BMS has determined that it's an OEM-capacity battery, or it hasn't cycled sufficiently to update. Gonna keep an eye on it. Pictures attached.
Edit: battery listing on ebay. Note if anyone else buys it: the suction cup that came with mine was 100% useless. Plan accordingly.
-
A further note on the smaller battery I bought: it did perform admirably. It had no issues when using the phone as a power supply (~2.5A sustained output), right down to where I stopped it at 5%, which is rather abusive for cells in this form-factor. It was just...well...smaller. It certainly wasn't a bad battery at all, it was just misrepresented. Lighter/slightly-smaller batteries would make great travel batteries, if the V30 were swap-friendly...
-
@Septfox
I hope you bought a good one.
The battery I bought lasts long, but also takes long to charge (about 2 hours). The phone shows fast-charging but when I check battery log in Hidden menu, it shows only Quick charge 2.0.
I found a way to reset the battery information, hopefully sellers don't use this to reset the cycle count.
There's a thread on xda that shows a method to reset battery information on HTC phones. That is holding down 2 volume buttons + power button (volume down + power for LG V30) in 2 minutes while the phone is being charged, let the phone restart as many times it takes in 2 minutes. And then charge the phone to full.
I did that and when I check in Hidden menu, the battery information was resetted to 3312000 full capacity and 0 cycle count.
minhntp said:
@Septfox
The battery I bought lasts long, but also takes long to charge (about 2 hours). The phone shows fast-charging but when I check battery log in Hidden menu, it shows only Quick charge 2.0.
Click to expand...
Click to collapse
QC 3.0 wouldn't outright increase the speed any; it exists to help reduce heat and provide more consistent charging.
If it makes you feel any better, mine is also getting stuck on QC 2.0. Judging by the way the Parallel Charging status flickers on and off as I move the cable and put pressure on the connector, I could probably stand to get a new charging port...
This is why wireless charging is a good idea. But now that I think about it, replacement boards are cheap on ebay ($5), so replacing it each time the battery is changed might be a good bit of cheap maintenance to do :good:
Have you tried a different cable and/or charger to see if your charging improves? Maybe you need a new port, too.
minhntp said:
I found a way to reset the battery information, hopefully sellers don't use this to reset the cycle count.
There's a thread on xda that shows a method to reset battery information on HTC phones. That is holding down 2 volume buttons + power button (volume down + power for LG V30) in 2 minutes while the phone is being charged, let the phone restart as many times it takes in 2 minutes. And then charge the phone to full.
I did that and when I check in Hidden menu, the battery information was resetted to 3312000 full capacity and 0 cycle count.
Click to expand...
Click to collapse
I find this slightly alarming, actually...
The normal button combination to hard-reset the phone is power+vol down. This might just be what's happening, and by making the phone do it repeatedly, the firmware might be interpreting it as a bootloop condition caused by something in memory and completely disconnecting power in an attempt to mitigate it (clearing the battery stats in the process). Probably harmless though.
Dunno that a seller would bother trying it, though. What do they get out of it, other than a seemingly-new battery with less capacity than it should have? It would just recalibrate when charged and show the real capacity in the hidden menu, and the game would be up :v
Septfox said:
QC 3.0 wouldn't outright increase the speed any; it exists to help reduce heat and provide more consistent charging.
If it makes you feel any better, mine is also getting stuck on QC 2.0
Click to expand...
Click to collapse
All V30 always show QuickCharge 2.0 in Nougat as well as Oreo. Not sure about Pie.
Speculation was it was a script error, that it was really 3.0 -- but falsely shows 2.0.
Can't remember if it was ever proven one way or the other.
I do remember people say it now charges slower on Pie. Again speculative because LG knows batteries are older?
I'm still on rooted Oreo, so I don't care.
ChazzMatt said:
I do remember people say it now charges slower on Pie. Again speculative because LG knows batteries are older?
Click to expand...
Click to collapse
I don't notice my phone charging any different. Even when using wired.
Sent from my LG-H932 using XDA Labs
ChazzMatt said:
All V30 always show QuickCharge 2.0 in Nougat as well as Oreo. Not sure about Pie.
Speculation was it was a script error, that it was really 3.0 -- but falsely shows 2.0.
Can't remember if it was ever proven one way or the other.
Click to expand...
Click to collapse
I read "the display may not be correct, so you should totally use this as an excuse to get a newer charger-doctor that supports QC".
...and you're completely right, I'm gonna go do that :v
ChazzMatt said:
I do remember people say it now charges slower on Pie. Again speculative because LG knows batteries are older?
Click to expand...
Click to collapse
Or to mitigate further aging by reducing internal heat. I also remember seeing somewhere that it was limited to 12w or 13w, now that you mention it, though that might have been for 15w wireless which has a reputation for slow-cooking the battery (in any phone, not just the V30).
Hi, I'm currently experiencing some problems with my Redmi Note 8 Pro.
I've had my phone for less than a month, and it's starting to get issues with the battery.
The battery, whether I charge it with the original wall charger, or I use a computer to charge it, or o use an alternative wall charger (that is for slow charge), it can't get to 100%.
It gets stuck at 99% and says, full charge in 2 minutes, even though the 2 minutes have passed long time ago.
I haven't done a full battery drain, and I always try to use a slow charge charger.
I also haven't done a full cycle without using the phone, maybe that's the problem.
But I'm worried, and I need some help, because I got the phone (as I said) less than a month ago, I haven't even payed the first installment.
I'm still within the seller's warranty, but I need some advices to what can I do, because returning the phone to the seller, to make a change, is gonna cost me 15 to 20 days. And I don't have any other phone to use.
Please, if someone can give me some advice, or tell me what to do, it's completely welcome.
Thanks.
And by the way, I'm using the Global 128Gb version, if that helps.
Edit 29/01/2020: I did a full discharge, because I couldn't read the quotes earlier, and I didn't realize how big the problem could be. Now, the phone can't go over 79%.
I didn't expected this issue with my RN8P, but with other phones (cheap noname ones).
A discharge to around 5%, and a full charge without unplugging did the trick for me.
AnonyIsRight said:
Hi, I'm currently experiencing some problems with my Redmi Note 8 Pro.
I've had my month for less than a month, and it's starting to get issues with the battery.
The battery, whether I charge it with the original wall charger, or I use a computer to charge it, or o use an alternative wall charger (that is for slow charge), it can't get to 100%.
It gets stuck at 99% and says, full charge in 2 minutes, even though the 2 minutes have passed long time ago.
I haven't done a full battery drain, and I always try to use a slow charge charger.
I also haven't done a full cycle without using the phone, maybe that's the problem.
But I'm worried, and I need some help, because I got the phone (as I said) less than a month ago, I haven't even payed the first installment.
I'm still within the seller's warranty, but I need some advices to what can I do, because returning the phone to the seller, to make a change, is gonna cost me 15 to 20 days. And I don't have any other phone to use.
Please, if someone can give me some advice, or tell me what to do, it's completely welcome.
Thanks.
And by the way, I'm using the Global 128Gb version, if that helps.
Click to expand...
Click to collapse
When I cannot tell if its some HW related problem with your phone or battery but I am really wondering why you want to do full charges (and/or discharges)? It is known to wear battery way faster. Li-on or Li-po batteries do not have memory effects and it is known to be best to always keep them charge for example between 15-20% and 80-85% trying to never get bellow or above.
This phone has a pretty big battery, that normally should be enough to bring you through a day of normal use (if it does not you may want to check your hungry apps running in the bg) but maybe you are an heavy gamer or use your phone for some heavy usage stuff?
Even then, it would be best to do 2 quick 15 to 50-60% in about 30 mins with QC2 (18W original Wall charger) rather than one unique full charge.
Looking at what you said with slow charging you probably know all of that already, but the faster you charge the battery, even if same %, the faster it will discharge. As odd as it is, remains factual.
I dont know if you ever used an external amperemeter or similar to check what kind of current was actually going through your battery while charging, but if you do you will notice the first % goes way faster to charge than the last few %. The chip dealing with the battery charge, charges slower and slower toward the end because it could damage the battery, when on the opposite it is rather safe to quick charge the % in the middle.
Also you may want to check your alternative 'slow wall charger' to make sure it provides you with a steady voltage current (V). If it is fluctuating too much, it may damage your battery.
If you want to do further research about the subject, there is a note on the RN8PRO Telegram group explaining how to calibrate your battery by deleting some system files (root needed as far as I remember) and having some charges/discharges steps. Personally I have not done it because it requires to go to 100% and 0% a few times, and depleting a Li-ion/Li-po battery completely can damage it irreversibly. They are not meant to be discharged fully period. Now battery should not be completely drained when OS takes the phone off, that said we never know for sure since we cannot change that setting unlike on our windows laptops, but I dont want to take the risk.
When you are stuck to 99% it kind of looks to be the OS not being able to know if the battery is fully charged or not. In that state of things, have you tried to turn off the device without unplugging to see if the off-mode charging screen (the small battery screen with % when you turn your phone off) also remains at 99% or gets to 100% at some point? Because maybe all you need is to restart the phone to make OS aware the battery is fully charged. Could be a SW known/unknown issue/bug to be fixed with future updates for all I know.
But again, I don't think you should fully charge and/or discharge (if you do) your phone when you can avoid it.
Just my 2 cents.
Hope this helps,
Regards,
-=Fxs=- said:
I didn't expected this issue with my RN8P, but with other phones (cheap noname ones).
A discharge to around 5%, and a full charge without unplugging did the trick for me.
Click to expand...
Click to collapse
I tried it, and... it got worse.
Now it can't go over 79%. :c
Thanks for trying to help anyways.
Muad.Dib said:
When I cannot tell if its some HW related problem with your phone or battery but I am really wondering why you want to do full charges (and/or discharges)? It is known to wear battery way faster. Li-on or Li-po batteries do not have memory effects and it is known to be best to always keep them charge for example between 15-20% and 80-85% trying to never get bellow or above.
This phone has a pretty big battery, that normally should be enough to bring you through a day of normal use (if it does not you may want to check your hungry apps running in the bg) but maybe you are an heavy gamer or use your phone for some heavy usage stuff?
Even then, it would be best to do 2 quick 15 to 50-60% in about 30 mins with QC2 (18W original Wall charger) rather than one unique full charge.
Looking at what you said with slow charging you probably know all of that already, but the faster you charge the battery, even if same %, the faster it will discharge. As odd as it is, remains factual.
I dont know if you ever used an external amperemeter or similar to check what kind of current was actually going through your battery while charging, but if you do you will notice the first % goes way faster to charge than the last few %. The chip dealing with the battery charge, charges slower and slower toward the end because it could damage the battery, when on the opposite it is rather safe to quick charge the % in the middle.
Also you may want to check your alternative 'slow wall charger' to make sure it provides you with a steady voltage current (V). If it is fluctuating too much, it may damage your battery.
If you want to do further research about the subject, there is a note on the RN8PRO Telegram group explaining how to calibrate your battery by deleting some system files (root needed as far as I remember) and having some charges/discharges steps. Personally I have not done it because it requires to go to 100% and 0% a few times, and depleting a Li-ion/Li-po battery completely can damage it irreversibly. They are not meant to be discharged fully period. Now battery should not be completely drained when OS takes the phone off, that said we never know for sure since we cannot change that setting unlike on our windows laptops, but I dont want to take the risk.
When you are stuck to 99% it kind of looks to be the OS not being able to know if the battery is fully charged or not. In that state of things, have you tried to turn off the device without unplugging to see if the off-mode charging screen (the small battery screen with % when you turn your phone off) also remains at 99% or gets to 100% at some point? Because maybe all you need is to restart the phone to make OS aware the battery is fully charged. Could be a SW known/unknown issue/bug to be fixed with future updates for all I know.
But again, I don't think you should fully charge and/or discharge (if you do) your phone when you can avoid it.
Just my 2 cents.
Hope this helps,
Regards,
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Hi Muad.Dib,
Well, I wanted to do that full charge a/o discharge because I thought it would help with the issue (turns out, it didn't, it got worse as you said) but I didn't know the effects of this before, I always thought it wouldn't have any effect. I wish I could have read your reply before doing it (I was busy and couldn't read it).
The battery lasts for more than a day (or it did before), and I always try to keep it clean from battery draining apps, and I don't play games that much on the phone, less than an hour per day.
Do you recommend me to do those 2 charges to 60% in my state? (phone can't get over 79% now).
I haven't ever used an amperemeter because I don't have one, and neither I do know how to use one of those.
If you can lend me a hand and give me the link to join the Telegram Group, it would very helpful ??. But I don't want to root the phone yet, cause the seller's warranty stills intact.
And yes, I have tried it and the off-mode charging screen keeps showing me 99% (or kept, because now it keeps at 79%). And I also tried few restarts and it didn't fixed it. :c
And I'm sorry, I wish I could've avoided it, but I read your reply too late.
Thanks for trying to help me anyways.
PS. I will try to do a factory reset to see if the MIUI update has something to do with the issue (because the seller told me to do it, and I will do it, though I don't think it could solve the issue). Please, if you have any advice before I do it, you could help me a lot. ( I'll do it something around 11:00 AM in GMT -03:00)
AnonyIsRight said:
Hi Muad.Dib,
Well, I wanted to do that full charge a/o discharge because I thought it would help with the issue (turns out, it didn't, it got worse as you said) but I didn't know the effects of this before, I always thought it wouldn't have any effect. I wish I could have read your reply before doing it (I was busy and couldn't read it).
The battery lasts for more than a day (or it did before), and I always try to keep it clean from battery draining apps, and I don't play games that much on the phone, less than an hour per day.
Do you recommend me to do those 2 charges to 60% in my state? (phone can't get over 79% now).
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Hey.
Very strange what is happening to you it's probably the first time I read about something like this.
Please note I am no battery expert either.
From own experience and friends, usually when you wear a battery (or it worn by itself after use or bad storage condition before being sold) it still goes up to 100% but does not retain original design capacity anymore. The usual behavior is like for example you still have like 30% left, and suddenly it drops to like 5% and you only have a few seconds to plug it in the charger.
When that's happens it is time to change battery.
In your case I really have no idea what could prevent HW/SW to reach 100%.
AnonyIsRight said:
I haven't ever used an amperemeter because I don't have one, and neither I do know how to use one of those.
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Oh those are easy to use as I meant some kind of small USB device that you plug in between your charger and your phone. They are cheap and you get them for like 10 bucks on Amazon. Readings might not be 100% accurate but they still give a decent idea as they display Voltage, Amperage and accumulated capacity/used current for device plugged.
AnonyIsRight said:
If you can lend me a hand and give me the link to join the Telegram Group, it would very helpful . But I don't want to root the phone yet, cause the seller's warranty stills intact.
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As I said I am nothing like an expert or anything so I am unsure what I can do to help. However I did check the telegram group and I confirm you the battery calibration thing is a rooted thing.
To find that group it is pretty easy just search for Redmi Note 8 Pro OFFICIAL from telegram and join the group.
You find quite a few things there.
AnonyIsRight said:
And yes, I have tried it and the off-mode charging screen keeps showing me 99% (or kept, because now it keeps at 79%). And I also tried few restarts and it didn't fixed it. :c
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Normally nothing you could have done, could have damaged the battery this way. Depleting it completely could have shorten its life or damage its overall capacity, but by all means there is no way in just a month you could have damaged the battery to this point. So either the OS is not reading things right (what version of OS and phone do you have - which region is your rom?) or either sensors or battery have a problem.
Since you still are under warranty period I would definitely get it replaced. Maybe you got a faulty batch or something. This happens.
AnonyIsRight said:
PS. I will try to do a factory reset to see if the MIUI update has something to do with the issue (because the seller told me to do it, and I will do it, though I don't think it could solve the issue). Please, if you have any advice before I do it, you could help me a lot. ( I'll do it something around 11:00 AM in GMT -03:00)
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This definitely cannot hurt to try.
If that does not work return the phone.
Just to know, based on your flag I would assume you are in Chile but I may be wrong. If I am not mistaking it is summer there and probably is pretty hot. I wonder if 'too hot' could damage the battery.
Hope this helps.
Regards,