Hi
I have tried to get the battery to calibrate to 100% using the Battery Calibration 1.3 Nexus app.
I have thalamus 2.6.35.14 r2 kernel installed on my phone which is a requirement of the Calibration app.
I have done tried it twice and successful got it to achieve learning mode but it did fully charge, but the battery age was only reading to 94% when I restarted it in the app. I wanted to try it once more and power off instead of restarting it, but Learning mode will not activate any more.
Learning mode gets activated when the battery drains to 3201mV, but mine won't activate, it goes to 3190mV and my phone shuts down. I have tried to reset the battery stats, wipe delvik cache. I did a have modded ver of the kernel 2.6.35.14, so I installed the above kernel but no joy.
Does any one have any ideas? I am quite frustrated... Tried it about 5 times tonight to activate learning mode, but no joy....
I doubt there is need for a "battery calibration app".
Just charge it full and delete /data/system/batterystats.bin
and on next restart it will relearn and calibrate on the battery.
I have done that before, and delete the battery stats, every time I install a new kernel. Phone shutdowns at 8%. I want the phone to shutdown at 0-1%
I read somewhere that the 95% full charge on the Samsung Nexus is intentional. Li-ion batteries don't like to be charged at 100% and drained near 1%. The battery is kept at its optimum charging capacity at 95%.
I don't use battery calibrators
jbm76 said:
I have done that before, and delete the battery stats, every time I install a new kernel. Phone shutdowns at 8%. I want the phone to shutdown at 0-1%
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You can't calibrate it perfectly.
No two batteries are the same.
If the voltage suddenly drops below a certain level the phone shuts done, even if it is only at 8%.
It is possible that with repeated use the display will get more accurate.
Related
Last night I left the house with about 40% left on my battery. By the time I went home, my Sensation was completely drained. This was within 3 hours, which should not drain it to 0%, especially since it was asleep most of the time.
When I got home and I plugged it in, I booted it up and surprisingly, it booted up with 42%. Before plugging in it had no power left, and the phone wouldn't boot at all. I wiped my battery stats yesterday morning too, after charging it to 100% for a few hours.
Seems like my battery stats are VERY wrong right now, and I just wiped it again after charging it to 100% and leaving it there for a while. Does anyone else have this problem? I know some people are having random stats popping up here and there, but this still had 30% juice left before it just died out. Never happened before. I was able to nearly fully drain it just 3 days ago too (100-5%).
Charge to full, wipe again, and drain to about 5%. Charge full and repeat. It usually takes a few cycles to correct battery stats.
Sdobron said:
Charge to full, wipe again, and drain to about 5%. Charge full and repeat. It usually takes a few cycles to correct battery stats.
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Click to collapse
I'd also recommend this application from the market for battery calibration, although you need root.
ben_pyett said:
I'd also recommend this application from the market for battery calibration, although you need root.
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Alright, thanks, I'll try that. Hopefully it gives me an accurate reading
Hey guys, is anyone else here experiencing the battery level going up when you restart the phone?
If my battery is at 70%, and I restart it, it'll be at 76% or even higher and remain that way for quite a while (remains a consistantly drain, not a single major drain in a short period of time)
This is something that's been happening since I was stock (Retail device from T-mobile store on launch date)
Here's some info:
-S-OFF using Revolutionary, and then later upgraded to 4.0.0.9 via terminal emulator
-Rooted stock (no rom uploaded)
-1900 mha Anker battery
-Battery stats wiped
-UncleSpoon's battery icon mod
even after all that, it'll still do it. So is it just me, or is everyone else experiencing this?
Yes, you have to re-calibrate your battery stats.
No, the CWM menu option to wipe battery stats is not right, for some reason.
Go get this free app: Battery Calibration
Charge your battery all the way up and let it sit charging for a few minutes after you see the light turn green (while turned on and booted up)
After it's been green for a few minutes, open this app and click the big "calibrate" button, and then un-plug it from the charger.
Let it run down until it turns itself off, without plugging it in. This means no usb to the computer, either - and don't turn it off manually.
After it turns itself off from lack of juice, plug it in (wait about 30 seconds) and then turn it back on. If you turn it on too quickly weird things may happen, depends on how depleted the battery is. (usually there is 1 or 2 % left so it's ok)
Leave it plugged in and turned on until fully charged. After that, you can feel free to play with it, but you should run it up and down a few more times without charging in-between. The first one is critical to do this way, though, or you are just wasting your time.
You MUST be rooted, or it will not work. (said for others who may need this info)
Tip to drain battery - screen brightness all the way up, screen to not turn off, and turn the flashlight app on. Leave it sit for a few hours.
Tip to charge quickly while on: Turn all wireless and data communication off, tap power button to turn screen off (keeping phone on)
Good luck, it'll solve the problem though.
I used battery calibration to wipe my battery stats (I did it in recovery on my 3G Slide, so I'm aware of that alternative method)..
I've let my stock battery get to 0% but that was pre-root.
After reading all the charging problems with the CWM, I was a bit afraid to attempt the 0% drain on the new Anker.
Are you running 4.0.0.9, and does it charge fine? I'd hate to deplete an Anker since I have no external battery charger.
RazoE said:
I used battery calibration to wipe my battery stats (I did it in recovery on my 3G Slide, so I'm aware of that alternative method)..
I've let my stock battery get to 0% but that was pre-root.
After reading all the charging problems with the CWM, I was a bit afraid to attempt the 0% drain on the new Anker.
Are you running 4.0.0.9, and does it charge fine? I'd hate to deplete an Anker since I have no external battery charger.
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Removing the stats only doesn't calibrate the battery, check the calibration guide in my sig, for a correct method that works for any android device.
Read this too
http://forum.xda-developers.com/showthread.php?t=1168036
Ace42 said:
Removing the stats only doesn't calibrate the battery, check the calibration guide in my sig, for a correct method that works for any android device.
Read this too
http://forum.xda-developers.com/showthread.php?t=1168036
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Seriously, that's a good read.
I agree.
What I recommended was better then just wiping battery stats with CWM, but nowhere near as good as what Ace42 linked us up to.
I'd recommend reading those threads and doing that instead, I am more then happy to be corrected and shown a better way.
(FYI - I depleted a stock battery completely, both in CWM 4.0.0.8 and 4.0.0.9 to test the charging issue. You will always be able to charge it in the phone, even if you bring it completely to dead.
The idea that you can't is a myth, and was a concern until it was proven not to be true.)
I have read every possible thread you can imagine on battery calibration and can never seem to do this correctly, is it a myth? No matter what I do, if I restart my phone, I end up going from 100% down to 85-86% EVERY SINGLE time.
This is after "bumping it". (letting it drain all the way to 0% and then fully charging again).
This is after using BATTERY CALIBRATION in the market which was told works well. (again, advises you charge to 100% then "calibrate" it via the APP).
This is after charging it to 100% and restarting it, recharging up to 100%, restarting and recharging (repeat, repeat, repeat), and then going into bootloader and wiping battery stats.
None of these have worked, does someone have a sure fire EXACT way to do this properly or is at ALL just hype? Help.
Your battery will never say 100% after a reboot. It sucks up a lot of juice on a power up and the battery doesn't charge during powering on. I usually drop about 10% on a reboot using the rezound battery. That is normal behavior. If you can charge to 100% with the phone on then you're fine.
Sent from my ADR6400L using Tapatalk
Interesting because I've never lost 15-16% consistently although I guess it using some juice to cycle makes sense. Anyone else seen 10+ every restart? Thanks for the help man in either case.
Hmm, never seen this before. On my phone which is running skyraider uc to 768mhz and uv only loses 1percent on reboot or doesn't even lose charge at all. Not sure why your phone is doing that.
Sent from my ADR6400L using xda premium
I am running G3D uc to 768mhz and on restart I may lose 1 - 5% at most depending on if i made any changes that take a longer restart. I bet you are overclocked? no need, under clock to 768mhz and your phone will run as smooth as 1.2mhz..maybe smoother while using less battery
Running liquid 3.2.1 on my T-Bolt with the Rezound battery and I only lose 1% battery at boot up. Never lost more...oh and I have never calibrated my battery. Also I get about 8-10 hours of moderate to heavy use too. All stock clocks btw
Just to double check - or reword... do it this way - if you aren't already.
Charge to 100%.
Wipe Batt stats
Drain to zero without recharging in any way (AKA let it drain until it shuts off on you).
Recharge until 100% (till it says 100%, not just "green."). And unplug.
And you're good! Try that and check back in.
Battery Calibration doesn't work
Ignore the % number, it means nothing. Use the battery monitor widget or another program that will show you the actual battery voltage. A fully charged battery will be somewhere around 4200 mV and a discharged battery between 3600 and 3200 mV. I've also noticed that the rezound battery throws things off as the mAh rating doesn't match up to either of the thunderbolt batteries. This is why the battery monitor widget shows the rezound battery as 2750 mAh instead of 1620.
What I recommend to my Evo peeps [which I have] is this:
-Charge battery to 100%
-Wipe battery stats in recovery
-Let the battery drain, so it manually powers off
-Charge to 100% again, and good to go
Battery Calibration doesn't work
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By this I mean Google Developers have came out recently and said battery calibration does not increase or have any effect on the state of battery life. All wiping the battery stats does is wipe the stats as to what has been using the battery, etc.
still handy for when you flash a new rom to wipe the stats, but it doesn't improve battery life at all.
smoody said:
By this I mean Google Developers have came out recently and said battery calibration does not increase or have any effect on the state of battery life. All wiping the battery stats does is wipe the stats as to what has been using the battery, etc.
still handy for when you flash a new rom to wipe the stats, but it doesn't improve battery life at all.
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Actually, the post from Dianne @ Google said nothing about calibration. She only talked about wiping or deleting the battery stats file.
You are correct, however all the battery calibration apps available only delete the battery stats file. So like I said it doesn't affect battery life.
wherestheboost said:
Just to double check - or reword... do it this way - if you aren't already.
Charge to 100%.
Wipe Batt stats
Drain to zero without recharging in any way (AKA let it drain until it shuts off on you).
Recharge until 100% (till it says 100%, not just "green."). And unplug.
And you're good! Try that and check back in.
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Click to collapse
This is what I thought I had done but will do again. The problem is even after its 100% and in between your 1st and 2nd step when I reboot into recovery, it's no longer at 100% and sometimes down to 85%ish. I will try again tho, thanks!
http://rootzwiki.com/_/articles/wiping-battery-stats-is-pointless-says-google-r316
That pretty much says it. Wiping stats and calibrations are placebos.
l7777 said:
That pretty much says it. Wiping stats and calibrations are placebos.
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Click to collapse
Yeah I read that too. But when I flashed my first rom on the tb I got abysmal battery life. 25% in like 20 min. I recalibrated and it got so much better. If its a placebo its a good one.
Sent from my HTC ThunderBolt using Tapatalk
all that says is the the deleting the batterybin file doesn't help. The battery is handled by each by software outside of android itself. So, following the battery calibration from the manufacturer of your phone still might help.
jefferyriess said:
Yeah I read that too. But when I flashed my first rom on the tb I got abysmal battery life. 25% in like 20 min. I recalibrated and it got so much better. If its a placebo its a good one.
Sent from my HTC ThunderBolt using Tapatalk
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Click to collapse
25% in 20 minutes means nothing. The % is an estimated number. Find an app that reads the battery voltage if you want a true reading on the battery's charge. Full is 4.2 volts, dead is between 3.0 - 3.6 volts. Battery life should only be measured in hours from full to dead. I've seen my phone stick on 100% for several hours before as well as sticking at 20% for several hours. Ignore the %. Anyone spending all day looking at a % to judge their battery life should go back to a battery indicator that doesn't show %.
I don't know if it's the ROM itself, the battery or any other problem but every time my phone dies & I put it on the charge for a couple of minutes, I turn it back on & the battery level jumps up about 30%. What should I do about this?
i.e. I'm not running on the stock ROM.
It might have to do with the Sensation's issue with reporting battery levels accurately--sort of like how your phone stays at 100% for several hours before finally dropping down.
Is it a stock battery or large capicity version, if the larger version there is an issue with some roms or phones recognising the battery correctly
It's the stock battery that came with the phone...do I have to calibrate the battery?
One thing you could try is charging the battery to 100%, then booting into clockworkmod recovery, go to advanced, and click wipe battery stats. Then once the phone boots just unplug it and let it drain from normal use, and charge it to a hundred another 2-3 times and that should get the battery back on track. I did this after changing roms and it worked for me
may some of the wipe battery options can help you
I just get my phone after a repair and I see a battery problem: when my phone is charging, about 82%, growth stops. If I shuts down my phone and I back on, it displays 100%.
does anyone know why and what to do about it ?
Thanks
Happened to me once, it was charging rather long than usually, stucked at around 80%, rebooted and it showed 100%. And it depleted normally.
Another time was after flashing a new rom, there was an issue so i rebooted while charging at around 80% as well, rebooted and it showed 100%, but it depleted rather fast from 100% to 90% so i knew it didnt "fully" charge. but charge it the next day and it was back to normal.
So imo it shouldnt be an issue. but hows your battery life?? does it depletes rather fast? U can try calibrating it with battery calibrater which can be downloaded from market. But i read that ds phones calibrates itself after each charge. so no worries there.
Happened to me as well
I avoid rebooting now (unless absolutely necessary) to see that happen again. Ignorance is bliss
I think it may be the battery starting to wear off ??
Sent from my HTC Desire S using XDA
I have the same issue,
I wipe battery stats in recovery and now it's no problem
Thank you for your answers.
Maybe my batery begins to die but i will try to wipe the battery stats and i will see.:good: