Develop Bugs

Should I calibrate my battery?

Lately my phone will go through a massive drain until it hits around 55% then it will drain normally. I have not changed anything since this started. Any suggestions? I'm thinking I may need to calibrate my battery.
Sent from my HTC Droid Incredible 2 via the XDA app.

That sounds like a good idea for your situation.
Sent from my Incredible 2 using xda premium

Thanks for your input. I want to wait a few days before I do it. So it will give it time to see if that really is the problem. This only happened yesterday and today so maybe tomorrow will be better. Besides the only time I really have to do it is later this week.
Sent from my HTC Droid Incredible 2 via the XDA app.

How does one calibrate a battery? Is this the same thing as "conditioning?"

Apsalus said:
How does one calibrate a battery? Is this the same thing as "conditioning?"
Click to expand...
Click to collapse
You charge your battery to 100%, wipe batterystats.bin, then run the battery down to 0%, then charge uninterrupted back up to 100%

Battery Calibration does it help ?
I have a similar situation and i followed the battery re-calibration method too but still didnt help.
Situation - The battery would charge till 88% but will show its fully charged. Recently put Vivokat so now its even more prominent. Every reboot drops the battery by steps, like i would reboot and the battery would go from 80 to 65 just like that, no gradual decline or anything. And even after a full charge (the green light indicator is on) still the battery would continue charging.
Tried - I tried resetting the batterystats.bin file as suggested, fully charged till 100% then removed batterystats.bin file then allowed to discharge all the way then charged continuously till 100%. No outcome
Anything else that can be done ?

[Q] Charge time from 0 to 100 ?

So... I'm calibrating my battery. Charged it to 100%, left it run down to 0%, and am now charging it back up without any break. The problem is... as soon as I plugged in the charger when the phone powered down, the charging battery icon came up..and it wont go away. It's been like this for 2 hours.
I'm hoping the device is actually charging and isn't just frozen or something; I don't want to turn the device on as that might hinder the whole calibration thing.
Question is: Does anyone know how long it takes to charge from dead to 100% ? I need to know when to take the phone and see if it's actually been charging this whole time

Actually that happened to me last night let it charge for a lil bit unplug the phone take the battery out and then put the battery back in and turn the phone back on with the power button and it should turn back on
Sent from my Galaxy Nexus using XDA App

Yeah I'd battery pull but can't mess up the calibration process. I know it's charging because the device is somewhat warm in the back and the display can't stay on for this long unless it's getting juice...
I'll battery pull if necessary in a couple of hours, or tomorrow morning. But seriously, this thing better be charging ಠ_ಠ  

Dmw017 said:
ಠ_ಠ  
Click to expand...
Click to collapse
rofl nice face bro

wilkinator87 said:
rofl nice face bro
Click to expand...
Click to collapse
Me gusta.
So it's morning, the device charged, but I did have to do a battery pull before booting it up. All is well :}

Yeah, I had this issue too
Wondered WTF was going on as I couldnt turn it back on whilst it was charging and the battery logo stayed on even when I unplugged it
Was resolved by pulling the battery and powering back on
OP hows your battery doing now?

Dmw017 said:
So... I'm calibrating my battery. Charged it to 100%, left it run down to 0%, and am now charging it back up without any break. The problem is... as soon as I plugged in the charger when the phone powered down, the charging battery icon came up..and it wont go away. It's been like this for 2 hours.
I'm hoping the device is actually charging and isn't just frozen or something; I don't want to turn the device on as that might hinder the whole calibration thing.
Question is: Does anyone know how long it takes to charge from dead to 100% ? I need to know when to take the phone and see if it's actually been charging this whole time
Click to expand...
Click to collapse
When I did a full charge from the point that I ran the battery down until the phone turned itself off, it took approx 140min for it to charge completely to 100%. That being said, I'd give it 2.5hrs max and if it still isn't showing it as being done charging, then there may be a problem.

spences10 said:
Yeah, I had this issue too
Wondered WTF was going on as I couldnt turn it back on whilst it was charging and the battery logo stayed on even when I unplugged it
Was resolved by pulling the battery and powering back on
OP hows your battery doing now?
Click to expand...
Click to collapse
It's caused by the bad cwm. We need a fixed cwm.
Sent from my Galaxy Nexus using xda premium

Battery was at 27% at 2:47pm. Been turned on since 10AM and playing music for about two hours with screen turned on for 2h 15m. Was in airplane mode for about 2hours as well. No es bueno imo, compared to what I saw before. Might be the new rom/kernels I flashed; even though they were supposed to significantly increase battery life.
..ah well who knows lol

ljwnow said:
It's caused by the bad cwm. We need a fixed cwm.
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
Has this issue been solved? I just rooted my phone, installed CWM, and different ROM. Whenever phone is powered off and I try to charge it, I cannot turn it back on without battery pull. This wasn't an issue with stock phone.

[Q] Battery drop after reboot?

I've been experiencing huge battery drops (from 10% up to 20%) after I reboot my phone. Is this a KitKat issue or is it my battery?
In the morning from 99% (after checking a few messages in the morning), I rebooted and I dropped 11% to 88%.
I think It may have been my battery giving me the huge drops. I don't seem to have this issue any more after buying a new one. :good:

I didnt found it on reboots, but i have this problem when i enter recovery. 20 minutes in recovery - i dont hace 20% of battery.

artur1131 said:
I didnt found it on reboots, but i have this problem when i enter recovery. 20 minutes in recovery - i dont hace 20% of battery.
Click to expand...
Click to collapse
Hmmm that's strange.
I've noticed it usually drops more when I leave my headphones in.

full loaded ACE 2.
reboot cost u 5%
first 10 % gone in a few minutes for heavy users and in a few hours when deepsleep !!
what i wanna say.
the first 10 % gone in a few.
after that normal drain.

I often get this, although not as bad. I usually lose 2-5% on a reboot, sometimes up to 10%. The other week I charged it to 100% when it was off, turned it on and had 92%.

so is this actually a problem or is it normal for everyone?. Mine looses 5-8% in the first couple of minutes after I unplug the charger..

It's normal.
Sent from my GT-I8160 using Tapatalk

edithswanneck said:
I often get this, although not as bad. I usually lose 2-5% on a reboot, sometimes up to 10%. The other week I charged it to 100% when it was off, turned it on and had 92%.
Click to expand...
Click to collapse
Same experience. Around 5% to 10% is lost during my reboots.
ulalume said:
so is this actually a problem or is it normal for everyone?. Mine looses 5-8% in the first couple of minutes after I unplug the charger..
Click to expand...
Click to collapse
Its normal. I usually lose the first 5% of a full charge in a couple of minutes. After it gets to 95%, battery charge will drain normally depending on usage.

Vino Kulafu said:
Same experience. Around 5% to 10% is lost during my reboots.
Its normal. I usually lose the first 5% of a full charge in a couple of minutes. After it gets to 95%, battery charge will drain normally depending on usage.
Click to expand...
Click to collapse
ok then, thanks...I just thought that this didn;t happen when I was on GB, but it doesn;t matter anyway..

If I reboot once, I will lose between 5 - 10% battery. However, if I reboot straight after the first reboot, I will lose between 0 - 2% battery. I've never really understood this.
Sent from my GT-I8160 using XDA Premium 4 mobile app

Phone need more energy for reboot, that causing the drain. Mine usually drop 2-5%. After recharge battery alsi drop to 95-92% fast. Thats normal
Sent from my GT-I8160 using xda app-developers app

Battery Charging Issue
Is this normal?
When I charge my battery whether it be from mains or USB computer it charges ok, but as soon as it gets to 100% it still says charging for a little time and doesn't report the unplug charger message right away.
With the Jellybean 4.1.2 system I don't get the alert tone when the battery reaches FULL, therefore I have a feeling that when it still says charging even though it's showing 100% that it's actually decreasing power at that point, any help please?
I have tried other batteries, and one in particular goes from 90% right up to 100% and seems to miss that last 10 percent, so I don't use that one now.
I have the most current firmware installed.

Buy a new one
Sent from my GT-I8160

pbgrout said:
Is this normal?
When I charge my battery whether it be from mains or USB computer it charges ok, but as soon as it gets to 100% it still says charging for a little time and doesn't report the unplug charger message right away.
With the Jellybean 4.1.2 system I don't get the alert tone when the battery reaches FULL, therefore I have a feeling that when it still says charging even though it's showing 100% that it's actually decreasing power at that point, any help please?
I have tried other batteries, and one in particular goes from 90% right up to 100% and seems to miss that last 10 percent, so I don't use that one now.
I have the most current firmware installed.
Click to expand...
Click to collapse
when it says 100%, you still have to wait for a few minutes before it displays the green "full" icon in the upper left corner and asks you to disconnect the charger.
However, the first 5-8% always drains REALLY fast and not proportionally to the rest of the battery drain...

I think It may have been my battery giving me the huge drops. I don't seem to have this issue any more after buying a new one.

ItsHumf said:
I think It may have been my battery giving me the huge drops. I don't seem to have this issue any more after buying a new one.
Click to expand...
Click to collapse
what about the initial drain? does the first 10% still drop fast or has this changed too with the new battery?

I just wish that JellyBean 4.1.2 would give an alert sound when the battery has reached it's full limit like Gingerbread used to do.
Who would be the best place to ask them to do this on their next update?

But I think that it does..a very short one indeed, but it does, along with the screen lighting up briefly..

ulalume said:
But I think that it does..a very short one indeed, but it does, along with the screen lighting up briefly..
Click to expand...
Click to collapse
Doesn't make a sound on my phone and im not always looking at my phone to see it light up.
I have sounds all turned on and on full volume so no reason why I dont hear a sound when its reached full capacity.

ItsHumf said:
I've been experiencing huge battery drops (from 10% up to 20%) after I reboot my phone. Is this a KitKat issue or is it my battery?
In the morning from 99% (after checking a few messages in the morning), I rebooted and I dropped 11% to 88%.
I think It may have been my battery giving me the huge drops. I don't seem to have this issue any more after buying a new one. :good:
Click to expand...
Click to collapse
are you using custom battery ? like double-powered-battery

Battery can not be fully charged - 8.4

I left my 8.4 charged with the wall charger over night, in the morning I found it's only 94% full, this happened multiple times, and I also tried another wall charger it still happened. The battery chart shows it stopped at 94% (some times 95%) and never went up. Does anybody has the same problem? Is there anything wrong with the battery? BTW, the battery life is not good for me, screen on for only 5-6 hrs on about 30% brightness.

debugger919 said:
I left my 8.4 charged with the wall charger over night, in the morning I found it's only 94% full, this happened multiple times, and I also tried another wall charger it still happened. The battery chart shows it stopped at 94% (some times 95%) and never went up. Does anybody has the same problem? Is there anything wrong with the battery? BTW, the battery life is not good for me, screen on for only 5-6 hrs on about 30% brightness.
Click to expand...
Click to collapse
Stock rom?
anything running that could be consuming power?
Sent from my SM-T320 using Tapatalk

dottat said:
Stock rom?
anything running that could be consuming power?
Sent from my SM-T320 using Tapatalk
Click to expand...
Click to collapse
debugger919 said:
I left my 8.4 charged with the wall charger over night, in the morning I found it's only 94% full, this happened multiple times, and I also tried another wall charger it still happened. The battery chart shows it stopped at 94% (some times 95%) and never went up. Does anybody has the same problem? Is there anything wrong with the battery? BTW, the battery life is not good for me, screen on for only 5-6 hrs on about 30% brightness.
Click to expand...
Click to collapse
I have the same problem.

dottat said:
Stock rom?
anything running that could be consuming power?
Sent from my SM-T320 using Tapatalk
Click to expand...
Click to collapse
stock rom, not rooted. I doubt it's caused by any app, if in that case the battery should still be fully charged then go down, but it's not what I saw.
dansafe said:
I have the same problem.
Click to expand...
Click to collapse
Yes that's exactly the same as mine. I contacted Samsung support and they suggested to do a factory reset to see if it's a problem about software, otherwise I'll need to file a service request.

This happens all the time. If I reboot the tab will then show 100%.
Sent from my SM-T320 using Tapatalk

laestrella said:
This happens all the time. If I reboot the tab will then show 100%.
Sent from my SM-T320 using Tapatalk
Click to expand...
Click to collapse
same problem here...tab will only charge to 84% and a restart dont work.
ik will try to do al factory reset.

michel242 said:
same problem here...tab will only charge to 84% and a restart dont work.
ik will try to do al factory reset.
Click to expand...
Click to collapse
Let it run down to 10% then recharge. do this a couple cycles. You could also try a battery calibration app that wipes the stats and starts fresh.
Solved my issue a while back.

A restart used to fix my issue but now the tab will say it's 100% charged and then at some point drop 10 or even 40% randomly.
Something is definitely wrong with the battery on this thing.

it's not the battery, but the reporting statistics used that is bugging out.

storino03 said:
it's not the battery, but the reporting statistics used that is bugging out.
Click to expand...
Click to collapse
Is there any way to fix this? If it's fully charged then it should show 100%.

I have the same issue, read here:
http://forum.xda-developers.com/showthread.php?t=1215182

I found the problem has become worse and worse, sometimes it just stopped at 30~40%, then I said "f*** it", opened the back cover, pulled the battery out and put it back, reboot. Left it charged during the night. The next morning I found it charged to 100% !! Will post back if it really solved the issue after some more cycles.

debugger919 said:
I found the problem has become worse and worse, sometimes it just stopped at 30~40%, then I said "f*** it", opened the back cover, pulled the battery out and put it back, reboot. Left it charged during the night. The next morning I found it charged to 100% !! Will post back if it really solved the issue after some more cycles.
Click to expand...
Click to collapse
I simply let the battery drain to around 20% and then charged it fully. Ever since (1.5 months ago), it has been reporting accurate battery %.

storino03 said:
I simply let the battery drain to around 20% and then charged it fully. Ever since (1.5 months ago), it has been reporting accurate battery %.
Click to expand...
Click to collapse
But the problem was the battery could not be charged to 100%, even if I left it charged over night, in the morning it showed 30%.

Mine works 100% perfect on ND3..
I have tried to make it do somthing weird..
I can't see anything in the ROM coding so far that would cause this..

So over a week later and my battery has been perfect.. Stock rooted nai....
4hrs 40 mins of screen on too..

Hi. I dont know if anyone is still on this post but i have this device and ive had this problem for the last year. It would get so bad with all the discharges that my battery died. I bought another battery and replaced it. I still got -300ma when connected to a 1A chaarger. So i replaced the flexi usb port membrane in hopes that would do it but i only got to 100mA. I bought a 2.4A charger and the tab doesnt even recognize the charger is in. Cant really turn it for service because I rooted it so my warranty is void. Any commentary and opinion would be greatly appreciated.:good:

How I fixed my battery life [Calibration][NoRoot]

So I am on the WWE of Nougat, version 2.41.401.41. I was getting abysmal battery life, at about 2h30m screen on time, without doing anything special (just browsing, some social media, etc.).
Also, AccuBattery was showing the battery capacity at 2300 MhA, which I found quite impossible for a one year old device.
I suspected that my battery was badly calibrated. What I did is what is described in this thread, slightly modified:
Charge the phone while turned on up to 100%.
Remove the charger and reboot the phone. Upon reboot, the battery will have dropped at about 96-98%.
Reconnect the charger and charge again up to 100%.
Remove the charger again and reboot the phone. This time, the battery will have dropped again, but not as much as the first time.
Repeat steps 2 and 3 until after reboot your battery remains at 100% or at least 99% (depends on how freaky you want to get).
After doing the above I have been getting about 3h30m to 4h00m screen on time and AccuBattery is showing about 2700 MhA battery capacity.
Seems that HTC has really messed up the battery calibration on the 10. Hope this little "trick" helps you as much as it did help me.
----------------------
A follow up to this, here is a reply I got from HTC support, regarding battery:
* For battery calibration :
please unplug the phone from charger - turn off the phone device - press on Volume up + Volume down - Power on button all at the same time till the phone started on , please check the battery indicator ,then follow as below :
1. Restart your device
2. Turn on Airplane Mode
3. Connect your device to the charger, and charge it fully
4. Set screen brightness to Max.
5. Set Screen Time out to never.
6. Dial *#*#3424#*#*, choose battery and Charging run down test, and follow the instructions.
If the device loses more than 40% of battery in an hour, then send your device to the repair center
Click to expand...
Click to collapse

errikosd said:
So I am on the WWE of Nougat, version 2.41.401.41. I was getting abysmal battery life, at about 2h30m screen on time, without doing anything special (just browsing, some social media, etc.).
Also, AccuBattery was showing the battery capacity at 2300 MhA, which I found quite impossible for a one year old device.
I suspected that my battery was badly calibrated. What I did is what is described in this thread, slightly modified:
Charge the phone while turned on up to 100%.
Remove the charger and reboot the phone. Upon reboot, the battery will have dropped at about 96-98%.
Reconnect the charger and charge again up to 100%.
Remove the charger again and reboot the phone. This time, the battery will have dropped again, but not as much as the first time.
Repeat steps 2 and 3 until after reboot your battery remains at 100% or at least 99% (depends on how freaky you want to get).
After doing the above I have been getting about 3h30m to 4h00m screen on time and AccuBattery is showing about 2700 MhA battery capacity.
Seems that HTC has really messed up the battery calibration on the 10. Hope this little "trick" helps you as much as it did help me.
Click to expand...
Click to collapse
Hey, so one month-ish on, how has the battery life been? Has it stayed at 3h30-4h00 screen time or has it dropped again like before?

Devzz said:
Hey, so one month-ish on, how has the battery life been? Has it stayed at 3h30-4h00 screen time or has it dropped again like before?
Click to expand...
Click to collapse
Depends on the usage really. I have given up on measuring the SOT, I just plug in every day at night. But has been pretty stable, gets me through the day.

errikosd said:
Depends on the usage really. I have given up on measuring the SOT, I just plug in every day at night. But has been pretty stable, gets me through the day.
Click to expand...
Click to collapse
Fair enough, it's a bit pointless at this point to be honest. Does the phone reboot randomly below 50/60% or has calibration fixed that issue? That's the biggest gripe I have with the Nougat update at the moment. If calibration fixes it, I'm gonna do it now! If not, do you reckon another kernel fix it?
Thanks for replying!

Devzz said:
Fair enough, it's a bit pointless at this point to be honest. Does the phone reboot randomly below 50/60% or has calibration fixed that issue? That's the biggest gripe I have with the Nougat update at the moment. If calibration fixes it, I'm gonna do it now! If not, do you reckon another kernel fix it?
Thanks for replying!
Click to expand...
Click to collapse
I have never had that issue, before or after "calibration". I am using stock ROM with ElementalX kernel (stock settings in Aroma).

errikosd said:
I have never had that issue, before or after "calibration". I am using stock ROM with ElementalX kernel (stock settings in Aroma).
Click to expand...
Click to collapse
Turns out it is a common issue:
https://forum.xda-developers.com/htc-10/help/random-shut-boot-loops-t3690547. Seems to be software related hence my initial question!

i have 300 mah battery capacity on my htc 10 , happened overnight ...

A follow up to this, here is a reply I got from HTC support, regarding battery:
* For battery calibration :
please unplug the phone from charger - turn off the phone device - press on Volume up + Volume down - Power on button all at the same time till the phone started on , please check the battery indicator ,then follow as below :
1. Restart your device
2. Turn on Airplane Mode
3. Connect your device to the charger, and charge it fully
4. Set screen brightness to Max.
5. Set Screen Time out to never.
6. Dial *#*#3424#*#*, choose battery and Charging run down test, and follow the instructions.
If the device loses more than 40% of battery in an hour, then send your device to the repair center
Click to expand...
Click to collapse

Did that work for you?

For me the htc tool is showing like 6-7%discharge over the one hour...
But if I I use Spotify or any other online/local music app, this can't be true...
Seems to be a software problem, nothing to do with nougat or oreo, nor with firmware version.
Trying the "manual" calibration tomorrow.
About the 40% rule... I already had a support guy say it only needs to be 25%...
Still my battery is far far away from that... Sadly, would love to send it in to have a fresh battery...

errikosd said:
A follow up to this, here is a reply I got from HTC support, regarding battery:
Click to expand...
Click to collapse
houston_ said:
For me the htc tool is showing like 6-7%discharge over the one hour...
But if I I use Spotify or any other online/local music app, this can't be true...
Seems to be a software problem, nothing to do with nougat or oreo, nor with firmware version.
Trying the "manual" calibration tomorrow.
About the 40% rule... I already had a support guy say it only needs to be 25%...
Still my battery is far far away from that... Sadly, would love to send it in to have a fresh battery...
Click to expand...
Click to collapse
from my understanding you are referring to the 40% in the quoted text
so when you do the test it should only lose about 25% in one hr like the HTC rep said to you instead of the 40 quoted by the other forum user?

Nolia said:
from my understanding you are referring to the 40% in the quoted text
so when you do the test it should only lose about 25% in one hr like the HTC rep said to you instead of the 40 quoted by the other forum user?
Click to expand...
Click to collapse
Right, I am in contact with the HTC support using their FB chat.
Last time I asked, still on HTC One m7, it was around 40% for me too.
This time they said it should not drop below 75%.
To be sure you should ask the support yourself, maybe it depends on the country as well?

Battery
Nolia said:
from my understanding you are referring to the 40% in the quoted text
so when you do the test it should only lose about 25% in one hr like the HTC rep said to you instead of the 40 quoted by the other forum user?
Click to expand...
Click to collapse
Have you tried wiping the cache partition, my battery was 100% & went to 81% and held its charge for much longer, it's a short way of clearing your battery stats

Another trick
I found an alternate trick and it looks like it's a bit more effective (at least for me):
Basically following OP's instructions: charging it to 100% then turn the phone off. But instead of restarting, Turn OFF the phone then hold power+volume down until the backlight of the back and app switcher buttons flashes twice then let go. Then turn on the phone while holding volume up. I think this helps force a battery recalibration every time.
When I did it once I got to 78% then the second restart 55%. I'm currently charging for the 3rd restart to see if I can get better than that. Previously when I tried OP's method a few days earlier I got 78% on the first restart , 98% on the second, and 99% for every time I tried after that.

Draika said:
I found an alternate trick and it looks like it's a bit more effective (at least for me):
Basically following OP's instructions: charging it to 100% then turn the phone off. But instead of restarting, Turn OFF the phone then hold power+volume down until the backlight of the back and app switcher buttons flashes twice then let go. Then turn on the phone while holding volume up. I think this helps force a battery recalibration every time.
When I did it once I got to 78% then the second restart 55%. I'm currently charging for the 3rd restart to see if I can get better than that. Previously when I tried OP's method a few days earlier I got 78% on the first restart , 98% on the second, and 99% for every time I tried after that.
Click to expand...
Click to collapse
Did you unplug the phone before turning it off or did you keep it plugged in?

have you guys tried the Chargie app? It's coupled with a hardware device that limits charging to the phone at your desired level and saves the battery long term.

Unfortunately none of the above did the trick for me. Still, the phone randomly (once in a while) goes to loop when 15 to 20 percent of charge is remaining and won't stop before I plug in a charger. /sad face/

errikosd said:
* For battery calibration :
please unplug the phone from charger - turn off the phone device - press on Volume up + Volume down - Power on button all at the same time till the phone started on , please check the battery indicator ,then follow as below :
1. Restart your device
2. Turn on Airplane Mode
3. Connect your device to the charger, and charge it fully
4. Set screen brightness to Max.
5. Set Screen Time out to never.
6. Dial *#*#3424#*#*, choose battery and Charging run down test, and follow the instructions.
If the device loses more than 40% of battery in an hour, then send your device to the repair center
Click to expand...
Click to collapse
Well the test consumed around 50% of my battery. The issue that started around a month ago is that my phone shuts off around 30% battery , however it won't switch on again till I plug-in the charger and when it is on , the battery is at 1%. Seems that the phones is displaying a 1% as 30% before shutting down. What should I do ?

DemonicSpirit said:
Well the test consumed around 50% of my battery. The issue that started around a month ago is that my phone shuts off around 30% battery , however it won't switch on again till I plug-in the charger and when it is on , the battery is at 1%. Seems that the phones is displaying a 1% as 30% before shutting down. What should I do ?
Click to expand...
Click to collapse
I had the exact same problem. I sent it to HTC and got the battery replaced.

errikosd said:
I had the exact same problem. I sent it to HTC and got the battery replaced.
Click to expand...
Click to collapse
Mind I ask how mch htc chared for this service?
Was it in US?
Thank you. :good:
Mine is currently sitting at,
according to accubattery at least:
on P - 66% capacity
on N - 75% capacity