Hi
I had a faulty battery, I flashed a clean Android 6 to try systemless root, I got successful but battery stats are so weird afterward. I have changed my battery just now but I'm getting weird stats still.
I tried to recalibrate the old battery to no avail, have not recalibrated the new battery yet.
Any ideas?
PS: I think battery percentage is replaced by voltage (mv) in stats, but why?
Related
For my HTC Hero, people on the boards recommended wiping battery stats and fully draining the battery for a couple of cycles.
Is it recommended for the Gtab as well? Are you able to wipe battery stats on this thing?
clankfu said:
For my HTC Hero, people on the boards recommended wiping battery stats and fully draining the battery for a couple of cycles.
Is it recommended for the Gtab as well? Are you able to wipe battery stats on this thing?
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Click to collapse
If you flash clockworkmod you can wipe battery stats.
What exactly does wiping battery stats do? My gtab never charges past 97%. Would this re-calibrate it so that full charge showed 100%?
It's not even a minor annoyance so I'm not intetrested in anything requiring me to drain completely but if this is a simple fix I would give it a go.
I have the same problem...battery won't charge past 96%. I've charged it overnight and wiped battery stats with no success. Any ideas how to fix this??
Vegan 5.1.1
Same issue here, sadly. First time charging, it got up to 100%. After that now though, it stops charging at 98%. No amount of bump charging, battery stat wiping, draining battery, etc, has seemed to work.
It charges to 100% when using it while plugged in. I mean if it matters to you to see the big 100 once in a while ;-)
Not for me, lol. Meh, not a HUGE deal, but kind of a bummer.
Mine has the same issue. Charged overnight while powered on and while powered off and the highest the battery meter reads is 98%. I have attempted to wipe the battery stats, completely drain the battery, and wipe user data- all to no avail. While slightly irritating, it really seems as if the battery is functioning normally and the breakdown is simply the calibration of the software. I am easily getting 6-8 hours depending on usage.
Mine did that as well in the beginning, but after a bunch of good charge discharge cycles charges to 100%.
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.
My battery level indicator displays a higher battery level after rebooting. With an app (Battery Indicator) which is translating level in %, its about 10%.
Rebooting in recovery is also resulting in an higher level, also about 10%.
I'm using Insertcoin 3.4.2 with 2.6.35.14Brickedv1.5 kernel.
Has the custom rom or kernel something to do with displaying inaccurate battery level stats or is this something normal?
Keeping rebooting doesn't deliver me a full charge btw, now that would be something nice
I have somewhat of a similar problem.
I use hyper non-sense 0.5 and today my cell wouldn't charge beyond 99%. I rebooted and only had 92% .
I wiped batterystats before rom flash..
Maybe these issues are somewhat related?
It's known that the battery reporting driver is **** and bugged.
Also, if you reboot, you'll get messed up battery reports than if you power off then back on.
Sent from my HTC Sensation 4G
Only wipe battery stats when your battery is charge to 100%
Support TrevE! Fuh Q CIQ!
Ok, thanks for the advice. Good to know not to be too much confident on the battery indicator.
Have found another threads about the battery stats and the behaviour of li-ion batteries also (the search button was gone for a few days, but back at the moment ), reading already...
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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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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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 am planning to buy a 1800mAh Mugen battery and i was wondering if the battery percentage would show properly on my phone? if not would wiping battery stats fix this problem?
evilcuber said:
i am planning to buy a 1800mAh Mugen battery and i was wondering if the battery percentage would show properly on my phone? if not would wiping battery stats fix this problem?
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$I have one and runs perfect
Percentage meter is just based on the voltage that your phone associates with fully charged and empty. When you get the new battery, just recalibrate the battery meter by charging to 100%, draining to 10-20% (not 0%) and repeat a couple times, and you should be good to go.
Wiping battery stats just clears the usage data, that gets cleared anyway when you charge the battery.
http://www.xda-developers.com/android/google-engineer-debunks-myth-wiping-battery-stats-does-not-improve-battery-life/