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I know the GNex doesn't have the best reputation with its battery, but in the past couple of weeks, my phone's battery has been behaving very very strangely, and the problem is very intermittent.
Basically, I am seeing some odd battery drain issues, but there are a number of reported sources from looking at the battery information on the phone. Some behaviors that I have experienced:
1. Screen using 43% of battery with 22 minutes of screen on time.
2. Screen using battery when off.
3. Battery discharging down to almost 0 within an hour after unplugging it from being charged to full - no single app / resource reporting huge usage numbers, just a complete drop on the battery chart.
Other things I have observed; if I catch the system in a state where the battery is draining faster than it should, if I reboot, the system will often recover to normal usage.
I am currently using Paranoid Android 3.15 (I know they have updates - but they also broke their own PIE color scheme, apparently intentionally so, so I am sticking with the last known good version). I am using the stock kernel, and have not tried flashing a new one - if anybody has recommendations, I am all ears.
It is also possible that since this is the original stock battery that the battery itself may be going bad, but my observation about the problem tending to go away after a reboot makes me think the issue is not in the battery itself. I guess the ultimate question is, is there anything that can be done here? Or am I stuck with this until I replace the device in 6 months?
Dear all,
Recently my Note is facing a weird problem. While my son is playing a game, the battery drops 20-30% in 10 minutes. If I shut down the tablet and re-power then the battery goes to normal again.
In the battery stats I can see a huge drop during game usage and then up again on reboot.
I performed a factory reset but the same happens....
I flashed the Kit Kat via Odin.... but the same
Any ideas?
Drain the battery down to below 5% then charge it to 100 and it should be fine. It happened to me once and after a full charge after a full drain it never did it again
Sent from my SM-G900T using Tapatalk
toyanucci said:
Drain the battery down to below 5% then charge it to 100 and it should be fine. It happened to me once and after a full charge after a full drain it never did it again
Sent from my SM-G900T using Tapatalk
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This is what worries me.
I drained the battery and charged it fully powered off. It did it again. I drained the battery and charged it fully powered on. It did it again.
If I'm using it for browsing, papyrus, images etc its fine. This happens only in games and when i reboot the battery percentage is ok again.
strange....
STELIOSFAN said:
This is what worries me.
I drained the battery and charged it fully powered off. It did it again. I drained the battery and charged it fully powered on. It did it again.
If I'm using it for browsing, papyrus, images etc its fine. This happens only in games and when i reboot the battery percentage is ok again.
strange....
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Click to collapse
I had the exact same problem as you are describing but additionally, my overall battery life wasn't lasting as long as it should either. I ended up sending it to Samsung's repair center to get fixed. I'm not sure what they did but some other people on the forums suggested it was a motherboard issue.
So the capacity of the battery seemed just fine but the readings were crazy (dropping from 50 to 5 in minutes and then on reboot back on 50).
After 2-3 full cycles of charging nothing changed. Flashed fw nothing changed. Went to Samsung service and they just informed me that they changed the battery and now performing final checks.
Hope this will solve the issue. I'm too lucky that I am in the "6 months warranty" window for battery...
How does one go about sending it into Samsung? After getting it back, did you see a significant change?
I've been debating doing this but wasn't sure how to go about it.
I haven't got it back yet. They just called me and they said that apart from the battery, they need to change another part (the telephone operator didn't know which part) and I'm going to receive it tomorrow.
So I'll let you know once I receive it.
STELIOSFAN said:
Dear all,
Recently my Note is facing a weird problem. While my son is playing a game, the battery drops 20-30% in 10 minutes. If I shut down the tablet and re-power then the battery goes to normal again.
In the battery stats I can see a huge drop during game usage and then up again on reboot.
I performed a factory reset but the same happens....
I flashed the Kit Kat via Odin.... but the same
Any ideas?
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Click to collapse
Did you fix the problem ? I have the same problem and i don't know how to fix it. (i am with 4.3 not rooted).
Rupar4o said:
Did you fix the problem ? I have the same problem and i don't know how to fix it. (i am with 4.3 not rooted).
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Click to collapse
After trying everything (flashing different roms via odin, factory reset, full battery cycles etc) the problem never went away.
Went to Samsung service. They checked the battery and had to replace it.... within the warranty.
Same issue here. Just got an email saying its fixed. They changed the charging port and lcd. Weird that they replaced the lcd.
Well I got it back. Seems they broke the s pen function when taking it out or putting in. The tablet thinks it's always out of its slot. I guess another 2 weeks without this thing. What a pain in the ass. Times like this makes me wish I bought an ipad where I could just walk into the store and get it fixed that day.
I had the same problem. I sent it back on Monday and got it back 7 days later. They did not say what they changed, but now everything is working fine. I even got a new usb cable and a magnetic Germany flag
I sent mine in for an overheating problem and they changed the charging port and gave me a new cable. I initially also had the random drops in battery but seems to be better now.. They said bad voltage going to charging the battery or something. Still have overheating so gotta send it in again?
Sent from my SM-P600 using XDA Premium 4 mobile app
So guys did you get it fixed? I have exactly the same problem. I have sent it to fix at the sam service - they changed the charging port, but it didn't help anything. 1,5 years of normal usage and now I can pretty much throw it into the toilet. God damn POS!
Galaxy Note 10.1 2014 battery drops
Hello all,
Just wanted to inform you all that I have been experiencing these battery drops (yesterday from 93% to a mere 5% in a matter of minutes) for a very long time now. I am running under the latest 4.4.2 stock firmware.
Also, battery life is way below par (understatement !), where the Note sometimes drops to around or below 5% (the magic number below which the screen starts to dim pretty dramatically and there's no way to influence that)
Funny thing is that after the battery drops to below 5% or even 1 or 2%, it's still possible to use the tablet for quite a number of hours afterwards, which suggests it may be something with the logic estimating/determining the remaining battery capacity, rather than the battery itself....)
Now I've tried draining the battery and fully recharging it multiple times/ resetting the stats using free apps / revert to factory settings etc.
All to no avail unfortunately, this problem simply keeps coming back.
(By the way: Apart from the battery and battery life, the Note is an excellent device, and delivers as promised.
Please also note that charging it through the microUSB cable is also simple, stable and relatively fast, unless you compare it of course to my all new Samsung Galaxy Note 4, which has a superior fast charge mode and offers the highest possible battery-life at this moment and easily beats any other smartphone (including the usual suspects from that Cupertino-based firm of which I can't force my mind to remember the name of.....) in this price-quality and performance category )
As for warranty:
Battery is no longer under warranty, the device itself is.
As such, I will now get the battery replaced by a new Samsung OEM-battery first, and see if that resolves the issue.
If it doesn't help, I will send it in for repair for Samsung.
I will keep you all informed on the resolution and cause.
Likewise, if there's anyone that has gotten to the root cause of this issue, please let me / let us know
Some users reported some 'magic part' OTHER than the battery itself (motherboard / charging circuit or even the lcd ??) having been replaced by Samsung after sending it in for repair.
That information could be very valuable to us all in trying to get Samsung to resolve the issue, so I would really appreciate it if someone would share this info in this thread.
Hey I know that there hasn't been much activity on this particular thread, but i too have been experiencing this problem for over a year now. I sent it into samsung twice and it still never fixed the issue and by the time i was going to send it in the 3rd time it was out of warranty. I personally removed the back cover and unplugged the battery for a while and that did not help. I have tried flashing different ROMS and kernels to no avail until last week. I flashed Temasek's Unofficial Build found here http://forum.xda-developers.com/gal...t/lt03wifi-temaseks-unofficial-build-t2980604 and after 3 full power cycles i have not had a single random drop yet i even managed to go 3 days with 6 hours of screen on time which is a record for me with this device. Not sure if it will help everyone but this seems to have solved my problem and i am thrilled! Also (as embarrassing as it is) i played 2.5 hours of Clash of Clans straight without a single random drop either.
I am beginning to have the issue as well on my P605v. Has there been any progress with your battery replacement? @mroset
KwestJones said:
I am beginning to have the issue as well on my P605v. Has there been any progress with your battery replacement? @mroset
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Hello KwestJones,
I've successfully replaced the battery in the Note 10.1 2014, and it has improved things. With a little care, this is easy to do. Just removing the battery connector is a bit typical, you need to lift it carefully and slightly to remove it.
The result is not as drastic of an improvement as I would like to have seen, but at least the sudden drops in battery capacity percentage seem to be under control now.
I am doing a video test now, and will see how it behaves and let you know.
BR,
Maarten
Very curious to hear if replacing the battery corrected this issue. I've been experiencing this same battery drop issue for 2 or 3 months and the unit is well outside of warranty. Hoping there's a simpler fix, but willing to replace the battery if that will work since the tablet itself is still a great unit.
Complete factory reset should clear the Android Coulometer's data base or learning algorithm. Just clearing options of Battery Monitor Widget for rooted devices won't help. There are some other apps, which seem to help if the charge level never reaches 100%, a related, but not identical problem.
I have an old tablet suffering from this, with a tweaked custom rom, and i didn't want to clear and setup that completely. The algorithm or database is "learning" again, and the capacity jumps have become fewer and smaller over the last months. It should depend on how long the device was used and never reset before the incident. In my case over a year.
Itvs much like my cars fuel calculator, which won't work correctly during traffic light stops. Right after starting the engine, fuel consumption can raise several liters/h, when the car don't drive, as it uses the last sampled value(every 30 meters). And you need several kilometers to drive to have these levels drop to realistic ones again. While after a long driving distance, a traffic light stop will hardly have an influence.
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
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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!
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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
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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
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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...
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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,
I am experiencing a rather odd issue since about a week. This is my story:
I am running CyanogenMod on my OPPO Find 7a. I stayed on a build from 2014 (a nightly) that was working okay for me (CM 11, Android KitKat). I decided to update my version last week to the latest CM 12.1 (on Lollipop), and even though I ran in some issues (gapps, update the recovery, etc.), after doing a clean install, it seemed to be fine.
However, just after installing this new build, my problems started: my phone was randomly shutting down (like if no battery was left), but then when plugging it back in I could see it wasn't empty (sometimes it was 20%, sometimes 50%, sometimes as high as 80%). I thought it could be caused by corrupted battery stats, so I tried a bunch of apps and different methods to reset this, without success.
I also tried a factory reset, reinstalling of the ROM, changing the recovery to the cyanogenmod's one, changing back to TWRP (latest 2.8.6.0), wiping the caches, etc. None of this helped.
Today, I decided to install a backup I had from before the installation (a KitKat backup then), to see if the problem came with the new ROM. The phone seemed to work better at first, but after a while I experienced again this sudden shutdown (black screen, phone dead, Android didn't shut it down). So I started to monitor the battery level and voltage, and I noticed something surprising:
When plugged in, the battery voltage is steady at 4300mV. When disconnecting the charger, the voltage is dropping between 3300 and 4100 depending on the charge level (from my understanding, it is a normal behavior). However, as soon as I start using an app that is heavier (for example, Google Maps and jumping from one city to another frequently), I notice that the voltage steadily goes down, and the temperature of the battery goes up.
My conclusion after these tests is that the phone shuts down when the voltage gets lower than 3000mV (something around that value), after few minutes of using a "heavier" app. I checked regularly the temperature, and it didn't go above 30C (it was 26C when idle, I doublt 30C is a problem for a Li-ion battery).
So I have now these questions:
Is this normal that the battery voltage drops when using heavier apps?
Shouldn't the OS handle the load to avoid it to get under the threshold shutting down the phone?
Is it my battery at fault or probably some wrong installation of something? I find it odd that the battery problem appeared EXACTLY at the same time than the Lollipop update I did (and I saw many people having battery issues with this update).
Unfortunately I don't have a second battery to test if it works better, and I'd like to avoid buying one for nothing if possible...
Thanks
EDIT: another weird thing happening, the phone seems to need to restart several time to get in the recovery...
I'm having this problem too. I just got the phone on eBay, and updated to Oppo's Lollipop AOSP beta. Hopefully it is something with a quick software fix. I haven't tried switching ROMs again.
I changed my battery and it fixed the problem. So it was a hardware issue apparently, just odd that it appeared exactly at the same time of the update.
Sangoria said:
I changed my battery and it fixed the problem. So it was a hardware issue apparently, just odd that it appeared exactly at the same time of the update.
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Yeah. Your description was a clear indication of a failing battery or (possibly) at least a dirty battery contact.
Batteries will drop in voltage under load, but a healthy Li-Po should only drop a little bit (Probably maybe 100 mV, worst case 200 mV or so under load is my guess, I'd be pretty surprised to see a 200 mV drop from a healthy LiPo under reasonable load). If it's dropping a few hundred millivolts under load, the battery is toast or there's a loose connection.
I have a 2 year old S4 Mini (GT19195), currently running latest stable CM 13.
The phone is working fine except for the occasional (once a week or 2) unexplained battery drain.
With my fairly light daily use, the battery is lasting over 2 days. <And can usually run 4 or more hours screen on.> However, in the last few months, at random times (even with phone asleep - screen off for > 10 min, so presumably in doze), the phone will heat up, and battery will drop 5-10% per minute. After the phone shuts off from dead battery, recharging and restarting the phone will return things to normal, until the next time.
During these episodes, the phone behaved normally, I did not notice any lag on waking up the phone, switching/opening apps, etc. The battery meter page showed no unusual process using the battery (none of the process actually showed any increase in % battery use); except for the battery life dropping off a cliff as I watch. <I noted that the battery usage stat never adds up to 100% even in normal use ... It might show 10% screen, 5% Android, etc, but all that only adds up to 50% or so from full charge to when the battery is near dead.>
Anyone seen this before? Is this a sign of an ailing battery, or something else? Can this be a software problem - like something running away in the background? <Of note is that this happened once when I had completely wiped the phone and had the fresh install of CM 13 + Gapps (micro) ... so if this is software, it would be something in stock Android, rather than a 3rd party app.>
Thanks for reading & responding.
@JohnSoong
This sounds like the processor is stuck on max frequency. Either it is an app(s) playing up or some other process that is keeping the CPU working when it should sleep.
The first thing I would do is install BetterBatteryStats app or something similar to see what is keeping the device awake. You could also try to grab a logcat, but you would need to catch the incident and either plug into a pc with adb or run an app like catlog
JohnSoong said:
I have a 2 year old S4 Mini (GT19195), currently running latest stable CM 13.
The phone is working fine except for the occasional (once a week or 2) unexplained battery drain.
With my fairly light daily use, the battery is lasting over 2 days. <And can usually run 4 or more hours screen on.> However, in the last few months, at random times (even with phone asleep - screen off for > 10 min, so presumably in doze), the phone will heat up, and battery will drop 5-10% per minute. After the phone shuts off from dead battery, recharging and restarting the phone will return things to normal, until the next time.
During these episodes, the phone behaved normally, I did not notice any lag on waking up the phone, switching/opening apps, etc. The battery meter page showed no unusual process using the battery (none of the process actually showed any increase in % battery use); except for the battery life dropping off a cliff as I watch. <I noted that the battery usage stat never adds up to 100% even in normal use ... It might show 10% screen, 5% Android, etc, but all that only adds up to 50% or so from full charge to when the battery is near dead.>
Anyone seen this before? Is this a sign of an ailing battery, or something else? Can this be a software problem - like something running away in the background? <Of note is that this happened once when I had completely wiped the phone and had the fresh install of CM 13 + Gapps (micro) ... so if this is software, it would be something in stock Android, rather than a 3rd party app.>
Thanks for reading & responding.
Click to expand...
Click to collapse
That sounds like an issue I've had for several months, also running CM13 (Official) nightlies & Open GApps micro, unfortunately I've never had the time investigate (well I did once but it worked fine, I couldn't recreate the problem). It is currently happening less than once a week so not a major issue for me.
I've noticed several times that the phone felt hot, I've then used the Trepn profiler app, it would show the web browser running at 30-50% cpu constantly, so stuck as per @noppy22, though not at 100%. I have tried all the major browsers and they have all done it at some point, also most have crashed at some point, which I suspect may be related. Normally just the browser app crashed but yesterday using Chrome the phone FC and rebooted itself. Crashes seem to happen when I touch screen or scroll (though one may not have been when touching). Also XDA app crashed (1st time) when scrolling a couple of weeks ago, so probably not just browser issue on some sites as I thought previously, but might be unrelated. The stock battery meter did not show particularly high battery usage by browsers, though were a little elevated in % terms but hard to tell due to different usage patterns and not checking when things are good! I have noticed a bit of lag, which now makes we run trepn, if it shows high than expected usage by an app I close the app, which fixes it even if I go back to the same web page. This morning I woke up and my phone was off, I put it in my night-time profile (wifi & data off) that normally only uses a few % overnight but last night it must have used more than 30% of battery that was left, first time this has happened.
The other thing to consider is how good is your battery? At 2yrs old it could be tired if it's had a hard life (though yours maybe not) or you have allowed it to get very hot eg I did one trip using gps nav with phone mounted in windscreen cradle driving direct into the Aussie sun when my battery was about 2.5yrs old, thinking back I now think this was when I first noticed my battery was really dropping of quickly when around ~40% charge (though it was faster with more charge remaining also than my new battery, I would say), so think I the high temp the phone got to that day affected the battery. I think 4hrs of screen on time may be marginal, I was only getting about 3 to 3.5 when my battery dropped off fast, my new battery is giving me 6hrs SOT (mostly using browser app), so possibly you just need a new battery as only one other user has reported high cpu usage like I have.
Battery stats not adding up to 100% is normal.
I've just installed BetterBatteryStats, so I'll give it a week of so and see if it catches anything. So far nothing unusual in the stats.
I am leaning towards this being a hardware issue, likely the battery. Since the phone responded fairly normally during the overheat & battery drain episodes, this does not seem to me an app taking over the CPU. If the CPU was occupied by an app, shouldn't everything else be slowed down?
I have so far noticed no particular pattern to these episodes, and I cannot reproduce it at will. It is infrequent enough for now that I can live with it (although an unexpected dead battery is annoying.) I will see if the monitoring app pick up anything.
Hey guys,
Maybe you have to try to flash your stock or custom kernel again.
Thats probably the problem.
Xheers
When I got mine a few years ago the media process kept getting stuck and overheating/draining my phone and even a reboot wouldnt fix it. I found out because I was using the system panel app and monitoring cpu of system processes. I ditched and deleted the gallery app (it was trying to create thumbnails for 100+gb of photos and videos) for quick pic v.4.5.2 on every phone I've used ever since and haven't look back.