Database Users

Nexus One Battery Issue - Weird Problem

Hey I've been noticing a weird problem with my nexus one. I usually charge it over night so by the morning it's at 100%. I rarely let my phone die completely as I'm in and out of the house all the time. so i charge it when im home. however i noticed that when it does die completely, my battery level will say 30% 40% charged and then it'll suddenly die while im using it. i downloaded a battery widgit as well to make sure it wasnt just the system's battery charge indicator. the widget will also say the batter is charged 30% 40% and then the phone will suddenly die. When i plug the phone in and turn it on, then the battery level will say 1%. this has happened to me on both the stock nexus one and now im using the modaco sense rom, and same thing. any insight on my mystery?

Try going into recovery and wiping the battery stats.

SiNJiN76 said:
Try going into recovery and wiping the battery stats.
Click to expand...
Click to collapse
After wiping battery stats, charge the phone completely while it is off until the light turns green (this will take a few hours). This may solve the problem. I had battery issues too, but after doing this, it fixed it. Good Luck

so i tried both suggestions; wiped the battery stats in the recovery. and charged phone to full. tried it out for 3 days. and no results. my battery level indicator is still inaccurate. any suggestions?

Battery inaccurate after boot

Hi all
since a week or so i have a strange problem with my sgs and i hope you can help me to fix it
Everything works just fine (battery is accurate) until i switch off / reboot the phone
but at next boot the battery reports a very low value
(e.g. the phone has 55% battery left and after the reboot it reports only 8%)
with Froyo 2.2.1 (Speedmod Kernel) it would stay at that level until the battery has really drained to that point
With GB (JVQ - Galaxian Kernel) the battery percentage increases slowly
What i tried so far:
first of all, i deleted the battery stats for a few times and because that didn't work i upgraded to JVQ (with repartitioning and all), but that didn't solve the problem either
i don't really know what to do anymore and i hope someone can help me
thanks

Just do a few drain/ charge cycles and that should sort it
Sent from my GT-I9000 using XDA Premium App

First off, wiping batterystats.bin alone won't help.
Try this:
1. Charge to 100% until it says unplug charger.
2. Wipe batterystats.bin from recovery, unplug and then reboot
3. Drain your phone's battery until it shuts itself down
4. Charge to 100% without interrupting the charge
5. Enjoy :3

thanks for the quick replay!
unfortunately thats basically what i have already done
since the problem happened the first time, i have charged the phone at least 5 times and wiped the battery stats for 2 or 3 times right after charging the phone to 100%
its true that normally i don't drain the battery completely, but yesterday i have done just that and than let the phone charge overnight - but that didn't solve the problem
i will try to fully discharge the phone a few more times and load the battery while the phone is switched off
still i hope someone has an other suggestion how to solve this annoying problem
thanks

lol - stop deleting the batterystats.bin for starters.
The batterystats needs to indentify the top and bottom markers such as 0% - 100%, delete it ONCE.
Firstly, turn the phone off, charge the phone to 100%, bump charge it, till 100% truely.
This means, unplug...then plug it in again until you keep getting 100% show up.
Boot up into recovery then delete the batterystats.bin.
Use it heavy, activate everything and drain it. Make sure it is compeltely drained, try turning the phone back on, take the battery out for about 2 mins, try turning it on again, if it doesnt turn on, you've drained it.
Plug your charger in, do not turn the phone on, let it charge to 100%, again, bump charge it until 100% truely full, turn the phone on and let it run its natural course this time.
Do not delete the batterystats.bin again, you will have to repeat the process, it will take a good 2/3 times of charge/discharge for the stats to settle.
Hopefully helps dude! Good luck

thanks pidz!
just to clarify: i have had my sgs for a half year now and i never wiped the battery stats until last week
But i haven't tried bump charging jet - i really don't like that process as it is bad for the battery but might be worth a try, thanks

it usually happens with non original batteries. did you changed a battery? or maybe you got a fake one with you phone?

Battery calibration guide needed experts please

Hi to all i am facing massive drains in battery
My phone recharges in 1.5 hours completely.
But i dont think that this is reliable as if i use my ideos with automatic brightness and on demand 400-1000 franco kernel.i can play game for continously 1.5 hours maximum.
And on wifi its about 4 hours.
I think its battery calibration issue.
If any expert here make a guide to properly calibrate our batteries than we can get most out of them.
So experts please come one step ahead.
Sent from my HTC Pyramid using xda premium

To calibrate the battery you have to charge the battery to 100% and leave charging after 100% for about 30 minutes. After the 30 min, reboot into CWM, go into advanced and select Wipe Battery Stats. Reboot the phone again.
You won't notice much of change initially, because you have to repeat this process at least 3-4 times. In about a week time, you'll see that battery will last twice as longer.
This may not work for everybody, but it DEFINITELY worked for me.

Just download this app, plug your phone to charger, when that app shows over 4200mV press "Battery Calibration" button and then use your battery to 0% and then charge it back to 100%.

katu2006 said:
To calibrate the battery you have to charge the battery to 100% and leave charging after 100% for about 30 minutes. After the 30 min, reboot into CWM, go into advanced and select Wipe Battery Stats. Reboot the phone again.
You won't notice much of change initially, because you have to repeat this process at least 3-4 times. In about a week time, you'll see that battery will last twice as longer.
This may not work for everybody, but it DEFINITELY worked for me.
Click to expand...
Click to collapse
Gonna try this. The first time I did it I didn't notice much but today my battery has surprised me greatly.
Do you also use something Juice Defender?

NO juice defender app! That's making things worse, in my opinion.

battery not charging to 100%

new to the atrix.
I installed the latest oat update, and the phone was @ 70% after charging all night. I also noticed it discharge updates only by 10% increments.
I installed the homepage Rom, and it charged overnight to 93%.
I've applied the battery fix, but that only seems to stabilize the display (I noticed it fluctuating before the fix)
is there a fix? I've done calibrations on phones, but I needed to get 100% and the charge while off. Not sure how I can calibrate if I can't get a full charge while on.

Use recovery to wipe battery stats. If it still fails to display 100% when charged shut the phone off. Take the battery out, then plug the phone in. Wait until the "?" on the battery shows up. Then put the battery in while it is still plugged in. Leave it like that for about 30 mins. When you click the volume button the battery will show only 5-10%, but turn the phone on and it should read 100%.

J-man67 said:
Use recovery to wipe battery stats. If it still fails to display 100% when charged shut the phone off. Take the battery out, then plug the phone in. Wait until the "?" on the battery shows up. Then put the battery in while it is still plugged in. Leave it like that for about 30 mins. When you click the volume button the battery will show only 5-10%, but turn the phone on and it should read 100%.
Click to expand...
Click to collapse
I'll try that. I already wiped battery a couple times in cwn

OK, then the 2nd part should do the trick. It works for me anyways. Once you do see 100%, wipe batt stats again and let the battery die, then charge while the phone is off. Should fix you up.

A.VOID said:
new to the atrix.
I installed the latest oat update, and the phone was @ 70% after charging all night. I also noticed it discharge updates only by 10% increments.
I installed the homepage Rom, and it charged overnight to 93%.
I've applied the battery fix, but that only seems to stabilize the display (I noticed it fluctuating before the fix)
is there a fix? I've done calibrations on phones, but I needed to get 100% and the charge while off. Not sure how I can calibrate if I can't get a full charge while on.
Click to expand...
Click to collapse
You might have to wipe battery stats several times. I had an out of the ordinary calibration problem between flashing roms and had to wipe everything several times before it started working properly. Also note, that charging up to 95%-99%, and unplugging and plugging back in and slowly charging past 95% is common and not a problem. The software is estimating battery charge. And if you do charge past 95% and unplug its ok if it quickly goes back down to 95% and then tapers slowly.
I voided my warranty and your mum.

You have to wait for battery to go beyond 95%.
It takes time but it goes their.
My personal experience.

Just drain the battery til it dies. Then plug it in over night while you sleep. Once you wake up wipe battery stats and everything should be good.
Sent from my MB860 using Tapatalk

drpratik said:
You have to wait for battery to go beyond 95%.
It takes time but it goes their.
My personal experience.
Click to expand...
Click to collapse
Jnewell05 said:
Just drain the battery til it dies. Then plug it in over night while you sleep. Once you wake up wipe battery stats and everything should be good.
Sent from my MB860 using Tapatalk
Click to expand...
Click to collapse
I think he has tried both of these methods. I know I did. What I told him to do was the only thing that worked for me.

OK J, it looks like that fixed it.
Although battery showed 4169, and I saw others with 4200
Thanks issued!

try discharging until the phone shuts off and charging it again without turning it off.

A.VOID said:
OK J, it looks like that fixed it.
Although battery showed 4169, and I saw others with 4200
Thanks issued!
Click to expand...
Click to collapse
Hmm...battery should show 4203 when fully charged. Mine has actually displayed 4205 a couple of times.
Sent from my MB860 using Tapatalk

I'm going to try it again. I tried a different rom, and it only went to 92%. I redid the battery pull and Saw 4185.
Sent from my MB860 using XDA App

[HOWTO]wipe Battery Stats

When i must wipe my Battery Stats?
Always when you Flash a new Rom or Reflash the rom you must have to wipe your Battery Stats to have the best Battery life from your Device.
How to wipe Battery Stats?
1. charging the battery FULLY
2. boot device to CWM Recovery
3. advanced/Wipe Battery Stats
4. reboot device
5. don't charge the device until the battery still turns off your device because it empty (do not drain with heavy apps like video streaming ect.)
6. now again FULLY charge without interruption
7. Have fun ^^
Hit the Thanks Button if it help!

Thanks
I have woundered why it didn't work on my phone and that was becuse i charged it while i wiped it and i didn't let it drain all the battery

well...you can also wipe that in the xRecovery if you have it
the reason of wiping it is because the battery status will not be accurate.
also, if you found your battery is draining, try to wipe it, then check the running services if there are too much apps running in the background~

DanneB. said:
Thanks
I have woundered why it didn't work on my phone and that was becuse i charged it while i wiped it and i didn't let it drain all the battery
Click to expand...
Click to collapse
You're welcome.
Sent from my E15i using XDA App

If i wipe battery stats when my phone's battery not at 100%,is it okay..??I wipe the battery stats when i flash new rom..and until now i don't have battery drain..

nazz.rule said:
If i wipe battery stats when my phone's battery not at 100%,is it okay..??I wipe the battery stats when i flash new rom..and until now i don't have battery drain..
Click to expand...
Click to collapse
wipe it when battery has 100% and after you flashed new rom

The better and easiest way is with battery calibration.apk
Download this: http://db.tt/Ohb9vGgP
And follow the instructions

actually, it usually takes a longer time for the battery to get from 99% to 100%
the reason is... idk...
but even thought it is 99%, it takes a shorter time to consume the battery than it is charged to 100%
thats my experience

If you read the phone manual, it says that happens because it is expanding battery life... (??)
Hit the THANKS button to support me!!
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expanding battery life... -.-?
I think thats a lie~

Yes, thats what I am thinking too. My father saw it too, and the first thing he says: "Rubbish!!"
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lucastan96 said:
Yes, thats what I am thinking too. My father saw it too, and the first thing he says: "Rubbish!!"
This mail was delivered to you using XDA Premium!
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Click to collapse
+1 Rubbish!!
this is a troll? if charging increase battery life, i would see my electricity bill piles up ady

5. don't charge the device until the battery still turns off your device because it empty (do not drain with heavy apps like video streaming ect.)
what does that mean So after fully charge > wipe battery stat > reboot... what do I do now? I'm confused here

thanks
Sent from my E15i using xda premium

azyar said:
5. don't charge the device until the battery still turns off your device because it empty (do not drain with heavy apps like video streaming ect.)
what does that mean So after fully charge > wipe battery stat > reboot... what do I do now? I'm confused here
Click to expand...
Click to collapse
after you wipe the battery stats and reboot your device you have to wait untill your device battery is empty and the phone turned off by herself. 0% battery . After device turned off by herself, charge your device again to 100% without any interruption like reboot or unplug power plug.
Understand? Please excuse my english is not as well.

safix8 said:
after you wipe the battery stats and reboot your device you have to wait untill your device battery is empty and the phone turned off by herself. 0% battery . After device turned off by herself, charge your device again to 100% without any interruption like reboot or unplug power plug.
Understand? Please excuse my english is not as well.
Click to expand...
Click to collapse
That's what I don't understand. After I Wipe Battery Stat and reboot the device. I'm waiting, and She's not turned off by herself but I skip Step 5. and everything works. still 73% after 2 hours ...

@azyar
1. Charge the phone (100%)
2. Wipe battery stats
3. Reboot the phone
4. Now use the phone until the battery has gone from 100% to 0% (when the battery reaches 0%, it will turn off by itself)
5. Now charge the phone 100% again without interruptions (don't even touch it)
When battery level has reached 100% (not 99%), you may use your phone again.