Develop Bugs

[Q] Battery worn out?

Hello,
My desire, after:
an inability to restore nandroid backup
a possible corrupted sd card
a usb brick and inability to mount some nand partitions
and finally succeeding in fixing it, now using/running:
2.29.405.5 stock rooted rom
a new sd card (samsung 16GB class 6)
clockworkmod 2.5.0.7
s-off
seems that has battery issues. When it reaches below 30%, it drains a lot faster. In example few minutes ago, the battery was below 30% level and after sending a couple of sms messages the phone, without the "Connect the charger" indication shut down. Not even the battery icon was red.
What should I do?
After flashing the above ROM I ran an app called battery calibration (could this be the culprit?).
I haven't experienced such problems before the whole mess mentioned above.
Thank you for your time.

Well, it seems to me like a "classic" battery meter calibration issue.
TVTV said:
In order to calibrate the battery meter - FYI the battery itself cannot be calibrated, as Li-Ion batteries have a very low memory compared to old Ni-Cd etc. batteries - you have to go through the following procedure:
1) charge the battery to 100%;
2) let the battery discharge until the phone shuts itself down;
3) plug the wall charger into the phone, boot the phone up then charge the battery to 100% without interruptions.
If the above procedure does not yield the expected results, you can try fully charging the phone (LED showing green) with it completely turned off (after completely draining it). Again, the charging procedure should not be interrupted.
Source: personal experience - had to do this twice after installing new ROMs, as the phone was shutting down at ~14% (working like a charm now).
Regarding the matter of battery wear because of complete discharges, Li-Ion batteries do indeed have a lower cycle count than old-school batteries, but the standard charge/discharge number a Li-Ion battery can take is ~350, so you can't damage the battery pack by doing a full cycle per month (required to keep the battery meter accurate).
Good luck!
Click to expand...
Click to collapse

Did this work you mate? I have the same issue with my year old batter now... the phone shuts down @ 40% without any warning... and when I charge it, it starts from 0% and as soon as it hits the 58% mark, it jumps to 100% by itself... and i cant seem to figure out what the hell could I do to fix it... I tried calibrating the battery using the awesome method described here http://forum.cyanogenmod.com/topic/11823-battery-calibration-thread 3 times and nothing changed...

bump bump.. i really need help on this guys... :/
Sent from the infinity and beyond...

Weird that after calibration you still get that kind of issues, does this only happen on your current ROM? I have the latest CM in my desire and everything works just fine... Maybe try another ROM if calibration doesn't work to see if it's a hardware or software issue

i actually had issues with MIUI first.. the phone randomly shut down by itself but when i turned it back on, it was perfect... then i switched back to Oxygen and while everything was fine, suddenly one day the phone died at 40% :S and from that day on the phone charges to 58% and then instantly jumps to 100%... and as soon as it gets to 40% it shuts down itself... i guess i need a new battery but i wanted to see wether i can fix this one somehow so i can use it till the new one arrives...
Sent from the infinity and beyond...

same problem
i have the same problem
my phone turns off at 20% battery
calibration does not help....
and battery is not bad - it works fine
i'm sure its the problem with calibration

kshitijgandhi said:
i have the same problem
my phone turns off at 20% battery
calibration does not help....
and battery is not bad - it works fine
i'm sure its the problem with calibration
Click to expand...
Click to collapse
phone turning off at 20% is fine mate because thats the battery guards against any damage
most of the phones ( smart phones) switch off at 20% as going lower can damage the System .

It shouldnt normally..It's supposed to work fine upto 5%

Have a look at this, it worked for me (but you need a compatible kernel, most AOSP are so)
http://forum.xda-developers.com/showthread.php?t=765609

Insanely rapid battery drain

Hey guys, my nexus out of the blue started to rapidly deplete its battery. My charge will go from 100%-0 within 2 hours with the screen OFF. Yep, a total screen on uptime of about 13 seconds. I hoped the problem was with the battery itself so I bought a replacement 3800mah extended battery and it's still having the same problem, except now it'll drain in about 4 hours with the screen off.
I tried all the things I could find via search, turning off all syncs and settings I could but nothing improved it. Also I've wiped several times, there's no additional apps installed or anything, just stock. The phone seems to charge normally, taking about the same time as when it worked fine to get to 100%.
I'm guessing it's a hardware issue, but I'm out of warranty on the phone. Any of you experience something similar and was able to replace a part manually, or is my phone prettty much a brick.

Also I should add that there is no service currently on the phone since I had to switch it out, It's pretty much on airplane mode w/ mobile network turned off so it's not looking for a signal or lte draining. Another thing is that the drain is pretty consistent, meaning I could be using the phone or have it off the whole time and it's still going to 0% at the same time.

[Q] Excessive battery drain while completely powered off

I'm having a very interesting issue with my HTC One. When I power the phone completely off (ie: Hold power button, click power off), the battery still drains when left alone for a few hours. I'd except maybe a percentage or two drained when the phone first boots back up, but its kinda unacceptable that in ~12 hours the battery goes down 15+%!!
Last night, at 8:00PM EST, I turned off my One with a bit over 80% battery remaining. I even rebooted into recovery this time and hit power off to ensure that the phone wasn't doing some crazy deep-sleep hibernation junk. This morning, at 9:00AM I turned the phone back on and had 63% battery! About a 20% drain for 13 hours of completely powered-off sitting on a desk? I've attached a screenshot to further describe the issue. I'm at a loss for this one. With my usage, the phone honestly drains the same amount of power with the phone off than if I just left it on!
To add more confusion: When I first got the phone (Monday after the launch), I didn't have this problem. I'd turn the phone off with 100% once it was charged and 12 hours later turn it back on to 100%. A week or two into using the phone, I started seeing this. I thought it was something weird with Stock, and Googling suggested that the HTC One had some deep-sleep hibernation mode to make boots faster, but after installing CM10.2 I have the same issue. Even with powering the phone off from recovery!
Any ideas? Anyone else noticing this? Is my One defective? (I hope I don't need to send it back.......)

Rain724 said:
I'm having a very interesting issue with my HTC One. When I power the phone completely off (ie: Hold power button, click power off), the battery still drains when left alone for a few hours. I'd except maybe a percentage or two drained when the phone first boots back up, but its kinda unacceptable that in ~12 hours the battery goes down 15+%!!
Last night, at 8:00PM EST, I turned off my One with a bit over 80% battery remaining. I even rebooted into recovery this time and hit power off to ensure that the phone wasn't doing some crazy deep-sleep hibernation junk. This morning, at 9:00AM I turned the phone back on and had 63% battery! About a 20% drain for 13 hours of completely powered-off sitting on a desk? I've attached a screenshot to further describe the issue. I'm at a loss for this one. With my usage, the phone honestly drains the same amount of power with the phone off than if I just left it on!
To add more confusion: When I first got the phone (Monday after the launch), I didn't have this problem. I'd turn the phone off with 100% once it was charged and 12 hours later turn it back on to 100%. A week or two into using the phone, I started seeing this. I thought it was something weird with Stock, and Googling suggested that the HTC One had some deep-sleep hibernation mode to make boots faster, but after installing CM10.2 I have the same issue. Even with powering the phone off from recovery!
Any ideas? Anyone else noticing this? Is my One defective? (I hope I don't need to send it back.......)
Click to expand...
Click to collapse
You have to go into settings>power and uncheck fast boot. With this check it kinda puts the phone into hibernation mode and it never totally turns off.
My solution above is for a Sense based ROM not sure what may be causing this running a CM based ROM. Kernel maybe????

mademan420 said:
You have to go into settings>power and uncheck fast boot. With this check it kinda puts the phone into hibernation mode and it never totally turns off.
Click to expand...
Click to collapse
I did this while still on Stock; didn't change anything. Note that I'm now on CM10.2 where Fast Boot isn't a thing. Also, powering off from recovery should negate any hibernation, which I tried last night and still saw a 20% drain in 12 hours!

Rain724 said:
I did this while still on Stock; didn't change anything. Note that I'm now on CM10.2 where Fast Boot isn't a thing. Also, powering off from recovery should negate any hibernation, which I tried last night and still saw a 20% drain in 12 hours!
Click to expand...
Click to collapse
CLUELESS I don't get that kinda drain with my phone being on and untouched. It may be a defective battery.

mademan420 said:
CLUELESS I don't get that kinda drain with my phone being on and untouched. It may be a defective battery.
Click to expand...
Click to collapse
That's what I'm thinking, although what is weird is that usually batteries are either defective on day 1, or degrade over time. It's weird that in the course of a week or two I went from a seemingly perfect battery (maintained charge while powered off) to a terrible battery.
To make matters weirder: I'd expect more than terrible battery life while the phone is on, although I'm not seeing anything excessively bad. This is going to be a nightmare trying to explain to VZ, especially because I can't just tell them I've diagnosed with CM10.2 and a custom recovery. What sucks the most is I'm (more than likely) going to get a "certified like-new" phone back... ugh...

Rain724 said:
That's what I'm thinking, although what is weird is that usually batteries are either defective on day 1, or degrade over time. It's weird that in the course of a week or two I went from a seemingly perfect battery (maintained charge while powered off) to a terrible battery.
To make matters weirder: I'd expect more than terrible battery life while the phone is on, although I'm not seeing anything excessively bad. This is going to be a nightmare trying to explain to VZ, especially because I can't just tell them I've diagnosed with CM10.2 and a custom recovery. What sucks the most is I'm (more than likely) going to get a "certified like-new" phone back... ugh...
Click to expand...
Click to collapse
Yeah, I feel your pain GOOD LUCK:fingers-crossed:

[Q] Note 2 new battery won't power on without power cable

When I swap the battery in my note 2, it won't power on until I plug it in for a minute even if the battery is charged. Any ideas?
Edit: some more info: I was having bad battery drain on CM10, installed battery doctor. I thought I'd try a new battery as well for the battery drain and started noticing that it wouldn't power on after changing the battery. I formatted, refreshed and installed slimrom 4.3. It looks like I'm getting better battery life, but I have basically nothing installed. I'm still not able to replace the battery without a power cable to "jump start" it. Its almost like the phone doesn't even detect the battery until I plug in a cable.

kevingt01 said:
When I swap the battery in my note 2, it won't power on until I plug it in for a minute even if the battery is charged. Any ideas?
Edit: some more info: I was having bad battery drain on CM10, installed battery doctor. I thought I'd try a new battery as well for the battery drain and started noticing that it wouldn't power on after changing the battery. I formatted, refreshed and installed slimrom 4.3. It looks like I'm getting better battery life, but I have basically nothing installed. I'm still not able to replace the battery without a power cable to "jump start" it. Its almost like the phone doesn't even detect the battery until I plug in a cable.
Click to expand...
Click to collapse
Update: I don't have any better battery life with slimrom. I'm loosing about 8-9% an hour in standby. About 5% an hour with the phone powered completely off. I have 3 different batteries that all hold charge when out of the phone.

Are you using one of those crappy GOLD Chinese batteries? That might be your problem, don't know why, or of all of them cause issues, but a co-worker bought one for his HTC and was having a lot of issues.
For the battery drain you should at least try to diagnose what is causing it. Either install Wake Lock Detector (free on Google Play) or Better battery Stats (paid on Google Play, free on xda).
Most of my battery drain are constant and numerous wake locks caused by Goolge apps, including Keep and Google +. Once you know what is causing it, it will be easier to fix.

Update for anyone with similar issue..
I followed a guide on here to get back to factory stock (no root, stock recovery, etc). I had problems getting into download mode at one point and thought I was completely bricked until I decide to try booting without the battery even in the phone (powered just by USB). I was able to get into download mode that way and revert to stock.
Here's the strangest part to me: battery life is now back to normal. Not just regular use and standby, but completely powered off, I now only loose 0.5-1% an hour where I was loosing ~7% when powered off.
I don't know if it makes a difference, but I've also been keeping my wifi off. I'm experiencing terribly weak wifi transmission (still trying to figure that one out) that will cause my phone to loose wifi connection, or it will stay connected but is unable to load anything. Maybe my wifi issues relate to the crazy battery problems. Who knows.

Hi I have the same issue on my Galaxy Note 3 N9005. Battery drain when phone completely off. Can't turn on after swapping battery without charge. Tried factory reset, flash stock rom issue still exists. Any suggestions? Thanks.

(FIX) Battery Die Suddenly.

Hello Guys like me many of you have same problem with battery life, since i updete to MM my Battery start to droping very fast and suddenly die sometimes at 20% sometimes at 30% sometimes at lower %.
Something doing this we have lost all settings and after we boot the device again have to set up everything from scratch.
At the begining i was thinking my battery is DEAD and need a replacemant but in the past few months when i read hundred of Threads regarding this issue i realize it is not possible often after MM Update or flashed a MM ported ROM from HTC 10 this to heppans to so many users on the same time.
Ive tryed almost everything from fully Discharge to cleaning Caches Art etc and re flashing few times clean a new ROM nothing helps at all even some software for calibration make the things worse.
In this thread i found a solution given my HTC themself : http://forum.xda-developers.com/htc-one-m8/help/phone-loses-settings-apps-battery-dies-t3375980
And i did try it several times without Luck
I did keep reading and found out that really Holding Volume UP + Volume Down and Power Button did clean the Battery Cache but i was doing it all the time wrong.
What i did try is this:
Turn off the Phone lets says you have 40 50 % battery left.
Wait for a minute or two, then Press and Hold Volume UP + Volume Down and Power button for at least 6 Restarts, release the buttons when your device swtich ON after this 6 restarts and see your Battery %, usually what gona heppand there will be diference in the reading. ( When doing this DO NOT PLUG YOUR DEVICE FOR REACHARGE)
in my case doing that before the operation i had about 46% after that i have 55% this is the 1st thing i spot on.
After i did this, start using my device with heavy use and i saw the battery behave normal and the droping its not so fast like before in order to chek do i have any more wrong readings i decide to prepare the test again.
Switched of the Phone at 40% after all the restars and turned it on i had 39%
so i think this was normal and the battery do not have anymore any wrong reading %.
Start to use hard the device watching videos listen music 1st think i notice is the % are droping really slow not like before.
At exactly 15% Battery left i recive a Warning like it should be!!! (i didn`t recive any warnings like this in the past few months) then i keep using it hard and waited the battery to drop even more to see whats gonna heppand.
Well at 5% all was perfectly fine NO restarting at all.
At 2% i put my device for reacharge and after the full recharge to 100% now seems the battery to HOLD really Good 24 hours latter with intensive use of the device the % are droping really slow like it should be.
Now its seems that all is fine.
Try this and report back.
Its important DO NOT PLUG THE DEVICE when you doing this! Its make SENSE even if from HTC says PLug it ON (DO NOT) because when you cleaning the Battery Caches you want it CLEAN not on the same time that power from the charger to reach your battery this can lead to wrong INFO again so its really make sense you have to do it without to Plug in order to see the real % you had.
Later on i will make some screen shoots to show you how the battery Hold after this procedure.
its seems now i lose 2% per 1 hour in standbay witch is PERFECT for old device.

I've also had this issue. Didn't know about the volume button trick. Well now its too late and the battery is totally shot I think and won't even turn on or charge. Don't know what to do about getting all.my unsaved data off the phone. Was wondering if it would be possible to temporarily hook up a battery from my old m7 just to get the data off my m8. Anyone have any input on this? Is it possible to just temporarily connect an m7 battery to an m8?

Good lord..
I have the same issues for over a year now, so I had to test it out.
Before the restarts my battery had 52%, now it has 13% (battery saving mode is enabled, something i havent seen for years...).
I hope this problem will be fixed now.
I will give an update after a couple of days to see if it actually worked.
I'm running lineage os 15.1 oreo with sense.
Thanks anyway!

I held it for 6 restarts but it didn't turn on automatically. I had to let go of the buttons. Battery dropped from 69% to 48%.

Held it for 6 or 8 restarts and dropped from 40% to 18%, hope it will make a change. Thanks for the guide!

Update to my previous post: Battery lasts a longer, but dies at 22% percent, guess its the problem in the battery and cant be fixed via software

Did you guys get successful preventing sudden phone-off?
I recently bought this device. It was already updated to marshmallow. I did the volume button thing, at first htc's way. Then I saw this way and tried that. In the very next boot,everything is okay, battery drain till last drop. But in subsequent boots, problem reappeared . I tried wiping cache partition with twrp. But the problem comes again. Did you guys get it solved 100% in one time? Did I miss something? Or is it like me everywhere ?

Why do it at 40-50%?