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
Click to expand...
Click to collapse
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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Click to collapse
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.
Click to expand...
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.
Click to expand...
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
Click to expand...
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 %.
Guys
After upgrading my galaxy S2 (model: SHW-m250k) to JB, my battery is draining much faster. I thought it was battery problem and changed my battery but found same problem.
When I don't use phone like when I sleep, only 4-5% battery lost in 8-9 hours but as soon as I start using my phone, battery is finishing like 1% in every minute. I have found my screen's battery usage is always above 60%. When I start using my phone, it goes up to 80%. All other battery usage found normal.
I done factory reset but didn't work. Recently my phone got updated again (update size approx. 600MB) but problem didn't solve. I tried everything to reduce battery usage (turning auto sync off, lowering brightness, turning off auto rotation, enabling power saving mode etc) but didn't worked and I am very disappointed now. Cant use my phone to watch movie, chat because of huge battery draining by display.
I have also noticed that after using my phone when I put it idle, battery increases by 1-2% automatically!!
Could you please suggest me anything?
Hi, after restoring my phone to run CM12 again, I find that my battery is taking too long to charge and draining so fast. I have tried calibrating 3 times, installed greenify, cpu tuner (extreme saver) but it is still the same. In standby mode (when the screen is off and doing nothing) the battery is great and can last for many hours without losing a percent. However, when I'm using it drains so fast and the bottom part of the phone heats up (not the battery). Given this info, do you think it is best to replace the battery? Or is the problem the phone itself? Thank you.
I had this problem before I flashed the ROM, but that was several years ago so I can't compare between now and then, but it is clear that my device drains battery abnormally fast. I would say it lasts about 2.30 hours and it gets very hot over time.
To give a perspective, the miscellaneous battery drain went from 33% to 71%
Granted, I was installing new apps during that time, but I still don't see why it should drain so much, especially when it is miscellaneous that drains the most.
Buddy! You got a rom on there for just 4 hours! Way too soon to tell anything about battery usage and forget the on board battery statistics. Might as well read your coffee grounds...
Plus, tons of stuff is going on in the background after flashing a rom, indexing is one of them, AND Katshmallow is overclocked which makes the tablet run on the hot side anyway and eats battery. That's the price to pay for speed.....
Run it for a week, install Battery Battery Stats, maybe Wakelock Detector too, then we can talk about battery drain....
Recently my phone discharges extremely quick. It can go from 100% to 0% in less then 6 hours without any heavy usage. It is LG G5 with stock ROM (just rooted) and I have a spare battery. Both discharge so fast, so I don't think the battery is responsible for it.
Sometimes I notice that while wearing the phone in my pocket, it gets quite hot and battery went down by 20% in just a few minutes. If I look at the battery stats in system settings, it show the battery was mainly used by Android and phone stand-by.
How can I find out what was the real case of the problem? I guess because the phone is so hot, some app (or process) was causing that the CPU to work at high frequency a caused the drain. How could I identify what really is the problem? I even tried Greenify or Force Doze to eliminate the problem but with no success. How can I identify, what's wrong and what is causing the overheating and battery drain?
Thank you.