Recently my battery life has dropped extremely low. I have been running setcpu to underclock when not in use to preserve battery life and it was working very well draining 1% on standby every 2 hours approx. A couple days ago I had it on standby and somehow in the morning the battery was completely dead after I had fully charged it the night before. It is such a drastic drop and I didn't even change anything that I think it's the actual battery itself. I can watch the %'s drop just watching my phone now. Has anyone else had a problem with this? It seems that the battery can't hold a charge anymore.
Looking at my phone right now, I had it off the charger for about 10 minutes after it fully charged and it's already down to 90%.
The first question that comes to mind is have you made any changes lately? Installed new software? upgraded something? If your phone was getting okay battery life last week and now it's not, it's time to start pin pointing what, if anything, has changed. Keep it mind it is possible for a battery to die...
Someone on this forum told me to erase the battery stats. I was told to go into the recovery. I use clockwork. There is an option to reset battery stats. This worked for me but do some research on this site. I am not an expert but was told to do this by someone who is
Sent from my PC36100 using XDA App
Hi all,
I am puzzled by my problem. I am using Virtuous 2.7 + King's BFS kernel #4.
My phone battery will drop quickly from 100% to 92% right after unplugged from the power cord. By quickly, I meant I did not use the phone, killed all tasks, and battery will drop to 92% literally in minutes.
Bump charging, wiping battery stats, wiping dalvik cache, killing all tasks are not helping at all. I don't have SetCPU, but someone in the forum mentioned they have SetCPU, and it is not helping either.
Is anyone having this problem? Does anyone have any idea on how to solve this?
Please help.
Thank you!!!
chillmeow said:
Hi all,
I am puzzled by my problem. I am using Virtuous 2.7 + King's BFS kernel #4.
My phone battery will drop quickly from 100% to 92% right after unplugged from the power cord. By quickly, I meant I did not use the phone, killed all tasks, and battery will drop to 92% literally in minutes.
Bump charging, wiping battery stats, wiping dalvik cache, killing all tasks are not helping at all. I don't have SetCPU, but someone in the forum mentioned they have SetCPU, and it is not helping either.
Is anyone having this problem? Does anyone have any idea on how to solve this?
Please help.
Thank you!!!
Click to expand...
Click to collapse
I spoke to RMK as well as others about this in IRC, doesn't look like anything we can do, deep in the HTC code I guess.
I have the same issue using SkyRaider 3.1. Battery is 100% then after 5-10 minutes drops down to low 90s. It bothered me at first but after several days of moderate to heavy use and still having almost 50% battery left at the end of the day, I just figured it was some kind of bug when reading the battery level at the beginning. How is your battery life overall? If it's like mine, then i wouldn't worry too much about it as long as it's lasting longer. I'm using the 1750mAh battery from Sedio.
I was having the exact same problems until I went back to stock everything and bump charged. Took the OTA for 2.2, rooted, custom recovery, bump charged, wiped stats and cache and now I'm good to go. I usually dont think crap like this works but it made a huge difference in battery life and stopped the 100-90% problems I was having.
KB
I found this on EVO forum, but I don't know how his solution works. I personally don't think this would be the solution.
http://ip208-100-42-21.static.xda-developers.com/showthread.php?t=704272
I am using the 1500 mAh battery.
My battery life is uptime around 24 hours and awake time around 6-9 hours depending on usage.
so you're not having the issue anymore, after going back to stock (non rooted) with the official OTA 2.2?
KB Smoka said:
I was having the exact same problems until I went back to stock everything and bump charged. Took the OTA for 2.2, rooted, custom recovery, bump charged, wiped stats and cache and now I'm good to go. I usually dont think crap like this works but it made a huge difference in battery life and stopped the 100-90% problems I was having.
KB
Click to expand...
Click to collapse
KB Smoka, so you don't have this problem anymore?
Do you think format the phone and wipe all the data will help?
Have anyone tried formating the phone?
I've searched and found that the cause is the phone saying the battery is charged fully when its not basically so to fix this after it goes to 100% while the phone is one then u should turn it off and let it charge fully from there
Sent from my ADR6300 using XDA App
superchilpil said:
I've searched and found that the cause is the phone saying the battery is charged fully when its not basically so to fix this after it goes to 100% while the phone is one then u should turn it off and let it charge fully from there
Sent from my ADR6300 using XDA App
Click to expand...
Click to collapse
I did bump charge this phone, but it still drops like crazy.
I'll try this out tonight.
Thanks!
Is this a once time fix thing or do you have to do it every time you charge?
bump charging 4 or 5 times in a row (basically bump as many times as you need to to get it to where the light turns green withing a minute of 2 or plugging it in again) and then wiping battery stats solved this for me... kinda.. i still have to bump twice, but after that it'll stay at 100 for a good while and work it's way down normally, no jumping 10% down..
superchilpil said:
I've searched and found that the cause is the phone saying the battery is charged fully when its not basically so to fix this after it goes to 100% while the phone is one then u should turn it off and let it charge fully from there
Sent from my ADR6300 using XDA App
Click to expand...
Click to collapse
That is bump charging. Something htc is unable or unwilling to fix.
The issue has been known for a while and you have to 'bump charge' every time to avoid the 5-10% drop.
Here's their response about fixing the "bump charge".
"Dear **********,
I understand you would like to know if an update has be released to help get a full charge on your battery without having to bump charge it. At this time we have no information about any updates being released to help resolve this issue on your device. If an update is released for your device you will receive a notification on your device that an update is available.
To send a reply to this message or let me know I have successfully answered your question log in to our ContactUs site using your email address and your ticket number ************.
Sincerely,
Victor
HTC"
melophat said:
bump charging 4 or 5 times in a row (basically bump as many times as you need to to get it to where the light turns green withing a minute of 2 or plugging it in again) and then wiping battery stats solved this for me... kinda.. i still have to bump twice, but after that it'll stay at 100 for a good while and work it's way down normally, no jumping 10% down..
Click to expand...
Click to collapse
Do you bump charge every single time you charge right now? It's pain in the butt if I have to bump charge everyday.
Yup every day. 4 or 5 times is way overkill though. Just charge phone until green, turn off (don't need to unplug), wait until it turns green then do the plug/unplug one more time.
ufvj217 said:
so you're not having the issue anymore, after going back to stock (non rooted) with the official OTA 2.2?
Click to expand...
Click to collapse
Went to stock (official OTA), rooted, custom recovery, bump charged, reset stats and cache and I'm good now.
I charged it to "full" while it was powered on. Once the light turned green I turned the phone off, charged again until the light turned green. Took about 25 minutes. Powered up in recovery wiped battery and cache and now I'm good. The key is after doing all this you have to let the phone completely die.
If you're wiping your battery stats after a bump charge, you will have this problem every time you don't bump charge.
If you wipe your battery stats after it goes green without a bump charge, you won't have this problem.
This is because the software thinks the bump charged battery levels equal 100% charge. A bump charge adds approximately 10 percent of charge.
Formatting your phone or any software changes won't actually do anything other than wipe your battery stats while your phone is not at bump charge levels.
vantagejuan said:
If you're wiping your battery stats after a bump charge, you will have this problem every time you don't bump charge.
If you wipe your battery stats after it goes green without a bump charge, you won't have this problem.
This is because the software thinks the bump charged battery levels equal 100% charge. A bump charge adds approximately 10 percent of charge.
Formatting your phone or any software changes won't actually do anything other than wipe your battery stats while your phone is not at bump charge levels.
Click to expand...
Click to collapse
I'll try this instead! I don't want to bump charge everyday! It's too troublesome.
chillmeow said:
Hi all,
I am puzzled by my problem. I am using Virtuous 2.7 + King's BFS kernel #4.
My phone battery will drop quickly from 100% to 92% right after unplugged from the power cord. By quickly, I meant I did not use the phone, killed all tasks, and battery will drop to 92% literally in minutes.
Bump charging, wiping battery stats, wiping dalvik cache, killing all tasks are not helping at all. I don't have SetCPU, but someone in the forum mentioned they have SetCPU, and it is not helping either.
Is anyone having this problem? Does anyone have any idea on how to solve this?
Please help.
Thank you!!!
Click to expand...
Click to collapse
The reason this happens is because the battery gets charged fully to 100%, and then is allowed to slowly drain back to 90% (or so) before it's charged back to 100% again. This is how Lithium batteries are charged.
Try this: charge the battery to 100%, and immediately disconnect it after it's full. Notice how the battery doesn't drop to the low 90's immediately.
The reason "bump charging" appears to work is because there is no drain on the battery, since the phone is off. It goes to 100% and stops.
There's nothing we can do code-wise to fix this; it's just how the battery technology works. Keeping it fully charged at 100% while on would damage the charging capacity of our phones.
Btw.. wrong forum.
Solutions in search of a problem
Let me preface this by saying that I’m not an electrical engineer, or any sort of expert on phone hardware, but I think a couple issues are being confused. I’ve seen many posts about this battery “problem” here and elsewhere and an important point is being missed. People are confusing what the battery is actually doing with what the phone SAYS the battery is doing. They are NOT the same thing. The battery is a physical device and it will do what it’s going to do.
Battery life is a function of battery quality, initial state of charge, and demand. If you want the battery to last longer, look at ways of reducing demand. What applications are in use? How long is the screen on? What brightness level? Overclocking and undervolting settings? All these will affect ACTUAL battery life.
At lot of the “solutions” discussed have nothing to do with conserving energy use, but have everything to do with messing with how the phone REPORTS the state of charge. A good example is the issue of the initial drop reported by many users during the first few minutes after unplugging the charger. I see this on my own phone. If the phone is “taught” that 100% charge is when it is totally crammed with juice and plugged in as well, it’s not surprising that there is a good bit of voltage drop (+/- 10%?) right after unplugging. Does this mean there is a problem? NO! It’s just the battery doing what batteries do. A lot of the suggestions about wiping battery stats and such have nothing to do with saving energy. They are ways of fiddling with how the phone REPORTS its condition under various circumstances.
My advice: if you are happy with how your battery lasts, over the course of a day or so, then learn to relax, crack open a cold brew, and revel in just what a great phone the Incredible is. If your battery isn’t lasting as long as you need it to, then look at ways to save power or get a larger capacity battery. Tweaking the battery meter function is simply a feel-good exercise and won’t get you any actual improved performance. END OF RANT.
I can confirm that my gf's phone and my good buddies phone(both were never rooted) have never had a problem with the phone charging up slow first off(both phones charge about 1% per minute). And since they accepted the OTA, have not had the problem of charging to 100% and quickly jumping down to 90%. For instance, the other day my buddy charged his phone while on to 100%, played a game for about 2 minutes and closed it, battery was at 99%. Now I have tried and continually try every possible solution to my battery dying quick and charging slow, but am realizing that this must just be the cost of customizing my phone to my liking. And at least for the moment, a stock 2.2 DINC is just not an option for me.
larsrya8 said:
The reason this happens is because the battery gets charged fully to 100%, and then is allowed to slowly drain back to 90% (or so) before it's charged back to 100% again. This is how Lithium batteries are charged.
Try this: charge the battery to 100%, and immediately disconnect it after it's full. Notice how the battery doesn't drop to the low 90's immediately.
The reason "bump charging" appears to work is because there is no drain on the battery, since the phone is off. It goes to 100% and stops.
There's nothing we can do code-wise to fix this; it's just how the battery technology works. Keeping it fully charged at 100% while on would damage the charging capacity of our phones.
Btw.. wrong forum.
Click to expand...
Click to collapse
Sorry that I posted in the wrong forum. I thought this is related to the kernel or ROM I am using (Which is development right????).
Not to question your knowledge about the "battery technology", but why is it only happening to certain people? Nowadays most device are using Li-ion battery, why this phenomenon do not occur to all devices?
I have noticed that every time I load a new Rom on my phone (including a wipe) my battery life is awesome as long as I let the phone get down to about 2 percent before recharging. As soon as I charge the phone without the battery almost dead the battery life on the phone starts to suck. This leads me to believe that there is something written to flash memory when you plug the charger in. For a while I had noticed that if I plug the charger in in the middle of the day due to heavy usage that my battery life sucks for a week or so afterwards then slowly goes back to normal after regular charging before I go to bed. Under normal charging conditions (plug it in when I go to bed) I can get about a days worth of charge. This is a stark contrast to the 2 plus days I get out of the phone after a fresh ROM load is loaded and I let the battery almost die before charging it in.
Anyone else observe this or have any idea whats going on that can be causing this. Maybe its just a simple matter of finding the file and deleting it. And yes I have tried doing a jump charge and wiping the battery stats. It doesn't give the same results as a wipe of the phone with a new ROM.
My battery seems good if i do this...
Install new ROM or not, just charge phone while i sleep (usually from 12am-530am) up and at work, coverage sucks in the building so i constantly switch from 1x to 3g ... battery life drains and i will be dead by 12 - 1230pm If i leave it on charge from then until i hit 100% (usually 30 minutes after) i take it off and head out of work, ill last all day and end up at 12am again with at least 60%
This is all heavy usage. Pandora stays running, facebook and plenty of texts/emails. My phone will never sit still without any activity for 2 minutes.
Switching kernels is the thing that saved my battery with now my kernel is 2.6.32.32-ck2-BFS by ziggy
awesome battery life out of the stock HTC battery
It could be different phones handle the same rom/kernel differently too. I noticed this when i was running a blackberry storm 2. Both mine and my brothers, we would have the exact hybrid OS installed. let em sit idle after having done the exact thing....mine would drain a lot faster than his. could be phone vs phone in the same case as i mentioned, who knows? what rom / kernel you running?
Sorry man but I don't understand your post. The sentence where you explain what you do doesn't make any sense. Can you explain again.
I'm running Cyanogen 7 rc2 with the stock kernel that comes with it. I don't believe its possible to change the kernel on Cyanogen.
trevoryour said:
Sorry man but I don't understand your post. The sentence where you explain what you do doesn't make any sense. Can you explain again.
I'm running Cyanogen 7 rc2 with the stock kernel that comes with it. I don't believe its possible to change the kernel on Cyanogen.
Click to expand...
Click to collapse
You can use whatever AOSP/GB kernel you want.
So its been a while since my last update but I wanted to pass along some more observations in hopes that someone can tell me how the power system works on Android phone.
For quite some time I have been able to use my phone for 2 full days before it required a recharge. This came about when I loaded Cyanogen 7 on my phone from scratch. As long as I charged it every 2 days the phone would have no problems lasting for two full days.
Two weeks ago I got stuck at a car dealership for about 8 hours. I passed the time by reading books, playing angry birds and surfing the net on my phone. About 7 hours in my phone was at 2 percent. I plugged the phone into someones charger and charged it for an hour or so so I would have a phone for the drive home. Ever since then my battery life has sucked. For a while I could barely get a full day out of my phone before it would die. I'm getting about a day out of it now which is acceptable I suppose but Its disappointing since I know the phone is capable of so much more.
So seriously what is the deal with the charging system on this phone? Why is it the phone has excellent battery life only after the phone is wiped and fully discharged before it is plugged in again? If a wipe of the phone fixes the battery what is it about the whip that does the fixing? Can it be reproduced without wiping the phone?
Come on guys. Someone out there is smart enough to figure this out. Hook us up.
It'll constantly recalibrate after you flash, so no real need to do the full discharge unless you really want to. If you don't do it then it'll get stable and better accuracy after a couple of weeks, but yes when you first flash a ROM it'll have sketchy battery life.
The battery is charging fine but your phone is still trying to determine how big your battery is, so it may not fully charge all the way. The quickest way for your phone to determine how big your battery is, is to drain it all the way down then charge it all the way back up. Some say this is potentially damaging to Li-Ion batteries. Personally I don't do it because of that, but if you chose to not do a full drain, your phone will figure out your battery size it'll just take a longer time for your phone to do it.
The actual battery life you get on your phone varies hugely on (in order):
1) amount of CPU you're using
2) data usage
3) reception strength
4) Screen brightness
So that in itself will cause some drastic day to day difference in battery life.
With all that being said, the battery life you're not getting during the inaccurate gauge period isn't that much. If you're someone who needs every last minute of battery that you need to have them right away, then personally I would suggest doing some other things such as under-volting your kernel and lowering your clock speeds.
So after some time I've been battling with my battery life through the day. Few months back it was great, Id easily get a day no problem! Then I found I had a wakelock issue and had that fixed.
I now suddenly have almost multiple things going on at once but first a small back story.
Went to bed one night and had it plugged into the wall. Went to bed at 60% and woke up and my phone was down to 6%. I thought, well the usb port is bad or the cable. Took it into the sprint store, they of course say "it looks like its charging just fine, the light is coming on" (the light was on during the night too).
They checked the battery and they said it was bad. Im wanting to take it to another store and have them check, because either: they didnt want to replace me with a new phone or replace the usb port if thats bad.
1) Bad battery- in a matter of 30minutes (during my lunch break at work) my battery dropped from 63% to 14%- only used 3g for facebook and sent 2 text messages. And my phone is undervolted and underclocked
2) Possible bad usb port- I plug my phone in all day at work, and 90% of the time the screen is off. The % of the battery doesnt increase, but maybe decreases slightly (I have data and everything turned off while at work because I get no data signal).
3) wakelock- so suddenly I'm getting a huge percentage of system usage of 54% in my battery stats. A few months back it was maybe 1%? I flashed the .img that sets the wimax, PRI, NV, etc to what fixed the issue back then. Im just confused how this has come back now when I havent even updated anything related only my rom (MIUI 1.8.26).
So I've ordered 2 2000mah batteries off ebay- I wasnt going to pay $40 from a battery story across from the sprint store (as they didnt have any stock, only extended batteries).
If anyone has had a similar experience, or would know what is the culprit would love to get feedback. Hopefully I can get this fixed soon. Maybe just a trial and error.
Something really strange just happened. I checked my phone just now and the battery is at 98% and just maybe 30minutes earlier it shut off because of low battery
What I explained before about using my phone on my lunch break was only 2 hours ago and showed 16%.
I always wipe my battery states when I update my ROM or install a new kernal.
tlxxxsracer said:
Something really strange just happened. I checked my phone just now and the battery is at 98% and just maybe 30minutes earlier it shut off because of low battery
What I explained before about using my phone on my lunch break was only 2 hours ago and showed 16%.
I always wipe my battery states when I update my ROM or install a new kernal.
Click to expand...
Click to collapse
Don't wipe battery stats if you don't have a full battery, it'll keep your battery from charging fully.
It may be the battery, but since you're getting new batteries you'll know then. If you didn't get an external charger, I'd suggest doing so. That way you can guarantee that your extended batteries get a full charge, and you can switch out a dead battery with a fully charged one if you keep having problems. The usb port on the Evo is crappy anyway, but if the light comes on and stays on & you can transfer data through the usb port then I doubt that's the problem.
It could be hardware failure, but wait until you get a new battery and have properly calibrated to come to that conclusion.
In the meantime download Battery Monitor Widget, that should show you your true battery capacity even if the system will not. You don't have to use the widget, you can just open the app. Once you see that your battery is fully charged, calibrate your battery properly. Wipe battery stats at 100%, let it drain until it shuts off, charge to 100% without breaks, and you should be good to go.
Good luck!
Sent from my PC36100 using Tapatalk
Thanks for that!
I just bought a battery from BB to hold me over (50$ for a 1750mah battery?! )
when it charges to 100%, should I go into recovery, or use battery calibrator (app)?
Ill install that battery monitor too
BMW has the feature to wipe stats. I also recomend to look at the reports and judge when the battery is full by looking at mV. 4200mV is full charge. Then wipe stats FIRST, then unplug and run down completely, then recharge fully with out unplugging.
Sent from my PC36100 using XDA App
Ya just noticed BMW had that feature. Forgot I had a menu button. LOL!
This battery I got at BB is a "1750mah".
You know what I realized what might be the issue? Back a few weeks ago, I bought an extended battery to use to take videos at a concert. At that point I wiped the battery stats at 100% of the 2500mah or so battery..
Recently my battery went to crap on me and won't hold a charge for more than 8 minutes. It says 100% and when it hits 85% a few minutes later it shuts off. When I turn it back on it says 3% left. I've calibrated it about 20+ times, nothing works so I know it has to be the battery. Here's my question. When my new battery arrives (it's a larger one compared to stock), do I wipe the stats before putting it in? Or just take the stock battery out and put the new one in to charge? Thanks, anyone who reads!
If the battery ships fully charged, or you charge it externally before using it, then yes.
Otherwise, I'd put the battery in and charge it fully, then wipe battery stats & do a complete calibration.
Maybe someone with experience can help you out a little more. I have extra batteries but never wiped battery stats. But I charge them in an external charger so there's no need.
Sent from my Evo + MIUI using Tapatalk!
man i been having this strange problem too but i took my battery to sprint and they said its a good battery so im lost and this drop happens on any rom i flash or any kernal i have tried evrything from re-calibrate to htc fix where u let it charge then unplug and plug it back when u get your new battery let me know how it goes
plainjane said:
If the battery ships fully charged, or you charge it externally before using it, then yes.
Otherwise, I'd put the battery in and charge it fully, then wipe battery stats & do a complete calibration.
Maybe someone with experience can help you out a little more. I have extra batteries but never wiped battery stats. But I charge them in an external charger so there's no need.
Sent from my Evo + MIUI using Tapatalk!
Click to expand...
Click to collapse
That would be ideal if I could charge it before going in the phone. What if I just leave my phone shut off and put the battery in to just charge it?
auau465121 said:
man i been having this strange problem too but i took my battery to sprint and they said its a good battery so im lost and this drop happens on any rom i flash or any kernal i have tried evrything from re-calibrate to htc fix where u let it charge then unplug and plug it back when u get your new battery let me know how it goes
Click to expand...
Click to collapse
Got you, bud. New batt comes in tomorrow, I'll see if it fixes the problem. I hope so, anyway.
I just put a new stock battery in and did the calibration as soon as it charged the first time.
Seems like it worked fine.
Okay for anyone that ever comes to this thread months down the road here is what happened in my case.
I went to Sprint, the gentleman asked what could he do for me and I asked him to test my battery. Before even taking it he said, "I'll test it but it's probably going to come up green." I asked why was what, and he replied, "Because unless something is really wrong with it, they all say green." So I asked him to try it out anyway. A couple seconds later he comes back and says, "Congratulations, you're the first person I've ever seen with a bad battery." I immediately did a, "YES!" Because if the battery wasn't the problem then I would have had to get a new phone.
So there you go, my battery was totally messed up, had to get a replacement.