Clear battery stat - Epic 4G Q&A, Help & Troubleshooting

As the title states what would happen if I did the clear batter stat in cmw? Just curious
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Your phone would have to re-create the battery stats so if you did it while your battery was at 75% your phone would stop charging at 75% since that was now what the phone saw as 100%

Interesting. So if you did such a thing how do you reset it so that the battery charges to truly 100% ?
I have been noticing less battery life out of mine since I cleared these stats a few days ago. Fyi..running most current version on midnight rom.
In addition I have been noticing that when I let my phone charge all night it seems to stop at 96,97 % and never get to 100%
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You would have to restore a NAND backup from before you wiped stats.

What if I charged my battery fully from my wifes phone where I have never monkied with this setting. Once that battery is fully charged I would put it back into my phone and then reset the battery stats again.
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That would work.

Related

Help Please....battery never charges to 100 %

im using the stock htc battery and my battery always charges to 75% thereabout and stops, charging the phone on or off.........any ideas how to fix this?
Try wiping the battery stats in recovery
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Best way to calibrate battery

Everytime I reboot my phone my battery drops a significant amount. I tried charging it in full, unplugging it, & doing it again & then wipe battery stats but its still the same. Anything else I could do?
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shakim24 said:
Everytime I reboot my phone my battery drops a significant amount. I tried charging it in full, unplugging it, & doing it again & then wipe battery stats but its still the same. Anything else I could do?
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There are different theories/methods for this. I charge to full, unplug, wipe battery stats, plug in and charge to full again, wipe stats then let it run down to about 15% and recharge and wipe one last time. People will say my way is crap but it seems to help. Also, just letting the battery run down and charging back up seem to condition the battery to your new setup. There are several little tweaks made by devs in pursuit of better battery life so it may read inaccurately at first. Let your battery settle in. I say in a day or two, you will see improvement
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Dunno about the "best way", but this is a convenient way without having to boot into CWM.
Battery Calibration
NéMa
Market link
ghostrid3r said:
Dunno about the "best way", but this is a convenient way without having to boot into CWM.
Battery Calibration
NéMa
Market link
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Thanks man. Worked well for me
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best way!!!!

[Q] Help!!!...my Battery Drains like crazy!

my battery drains fast and i dont know what to do.
ive installed juice defender and did everything else to limit the battery drain as much as possible.
one thing ive noticed is that my screens brightness is set to low, but on my battery stats it says Display 64%
and recently my system says 30%
i left my phone on the charger overnight. and it got unplugged from the charger, when i woke i looked at my stats and the display was at 64%
the phone signal bar was filled and it was bright yellow.
and my system said 34%
can anyone help me?
When you plug it into a wall charger, can you confirm its charging AC and not USB
How old is the battery? Have you checked all the software that are automatically sync ?
I think that you must dig deep on what's your battery being used and consider the age of the battery in there too
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Yes I can confirm it, it says ac charging
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@ megabiteg not even a year old. I tried screen filter, flashing diffrent radios, changing wallpapers and turning off haptic press. How do u suggest I dig deeper?
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There are battery monitoring apps that you can find to monitor unusual activity.
Now your display is at 64% which is very peculiar.
Having trouble with AOSP? http://forum.xda-developers.com/showthread.php?t=1295702
Hmm I don't know what's up with it. I set my CPU low and I'm running evolved Final ROM.
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Could it have something to do with sense?
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Try System Panel, it's in the market. Best app I've found for monitoring battery consumption, especially when you need more details than the About Phone section under settings provides. It is a premium app, but cheaper than a new battery. Hope you find a solution quick! Battery problems are a pain.
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Have you tried calibrating your battery? Charge to 100%, then boot into recovery and wipe battery stats (or you can use the Battery Calibration app). Let the phone discharge fully - don't plug it in until it dies - then charge back to 100% without breaks.
It could also be an issue with your usb cable or charger. Sprint can run a test on the battery to see if it is the problem. Try calibration first to rule that out, and never wipe battery stats unless you're fully charged.
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I've tried the battery calibration. And I've done the wipe stats. I've read on how to recalibrate from HTC....
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Another thing I've noticed is that my battery drains when I flash a ROM...
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try charging it while its turned off then repeat the steps plainjane said. i was in the same boat as you when i flashed the evolved rom, now my battery life is pretty good.
What I just did was downgrade my radio one. My battery has been so much better in life. I am at 7 hrs right now at 66%. I have been using 4g, texting, and sending emails. Currently running Decks 1.3, SZ 2.2.1 CFS Havs.
What radio do you suggest? I'm on 1.77
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I tried the wake lock fix... I dunno if that one was a good pick. What do u suggest?
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Battery App. Calibration

Battery Application Calibration Doesn't Work I was @ 40% and flashed CM.MTD.RONIN8 and once upon boot up 9% seriously???
Ill Stick to my Manual Way, Anyone else have this issue even after calibration?
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Mine did that me last night while I was flashing. It went down to about 11% rebooted and it was 69%
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That is a clockwork/battery stats bug. Don't reboot without plugging into a charger below 50%. If you pull the battery and wait a few minutes and put it back in and boot it will go back to where it was.
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kennyglass123 said:
That is a clockwork/battery stats bug. Don't reboot without plugging into a charger below 50%. If you pull the battery and wait a few minutes and put it back in and boot it will go back to where it was.
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The guy above was @ 70% and dropped to 11%.
And after 5 mins I went from 9% to 26%. I didn't go back to where I was. Anyways That bug should be fixed then haha its quite annoying
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mines do it ALL the time.. I can be at like 60 something percent and then I will hear the warning message that my battery is under 15 percent.. I can be at like 40 percent and reset my phone and it will be at like 8 percent.. I use the "Battery Calibration" app at least once a week to try and fix it.. and nothing.. I also have tried it on more then one battery and same thing..
Hey kenny, allow me to help with this one. Charge ur phone completely being on first and then off. Once its done, boot into cwm and wipe ur battery stats. Then reboot and use ur phone till it completely dies
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Supporting source (qbking77 battery calibration video) per youtube
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How to clear battery stats

Hey, I am having issues with my phone once I unplug it I'm down to 96% Should I get a battery calibration app or clean it manually and if so can some give me a quick breakdown. Don't know if battery calibration app are updated for ICS. Thanks.
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if rooted.....go into CWR and click on advanced....then click on clear battery stats....
then download battery calibration app from market.....charge battery to 100%..then open app and follow instructions....
If you over charge battery management discharges till around 95/96%.
You can use an app like root explorer to navigate to data/system and delete batterystat.bin saves booting to recovery which could cost around 4% battery on a reboot.
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Phone doesn't fully charge and sit at 100% its normal. But you delete battery stats by clockwork recovery
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