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Android OS consuming too much battery!

last night i slept for around 8 hours, before i slept, i had battery power at 65% left, i wake up in the morning to find 27% left! now i think that verrryy much for idle state as my wifi, edge, games, calling/texting and screen were completely turned off for many hours. i look up the battery stats and found that Android OS had consumed 51%. below is the screenshot.
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somebody please tell me why is that? and how do i get more life out of my battery?

Maybe your phone only goes up to 9 hours...

Maybe it's kernel related.. Are you on custom rom already?

My Droid on a JB ROM has the Android OS consume about 90% of the battery and it dies after 8 hours of screen off time, airplane mode. *shrugs* if anyone has a solution id like to know.
Sent from my MB508 using xda premium

This has probably to do with something that is running in the background.
your phone apparently doesnt go into "deep sleep mode" Only in this mode you lose just few % per night.
I recommand to shut off your phone, take out the battery for a few seconds, put it back in, charge it in one go, then turn it on again. See what happens.

You can, of course, sleep with the charger in.

Welcome to Android, for the most part, our battery life sort of sucks :/

[Q] 4.2.1 Battery Drain Issues?

Hi guys, I've flashed the 4.2.1 ROM by albinoman887 and only when the screen is on the lowest brightness it uses a lot of battery, really quickly.
Thread can be found here
When it's on standby the battery lasts for about 7 hours, but when it's on it lasts for around 45 minutes. Please help
I've tried
- Wiping battery stats
- Calibrating battery.
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Your horrible cell signal is at least part of the problem. Your phone is constantly pinging the towers looking for a better connection. That's a serious battery hog.
You may have the wrong radio for your carrier. Or you may live in a dead zone for your carrier.
Also, is this your first battery cycle after a full wipe? I get results like that for the first discharge cycle after install. But then it becomes fantastic. Drain the battery all the way until the phone shuts off. Then charge it using a USB cord on your computer (not the standard power charger) for an hour past when it says 'full'. The slower USB charge can help to give it accurate voltage readings while charging so it doesn't stop charging too early. See if that helps.
The battery on Albino's 4.2.1 is pretty spectacular for most people, so the good news is that this is probably a fixable issue on your end.

The signal was when I'm out and about, most of the time I have 3-4 bars on HSDPA, I may do a full 24 hour charge or get a new battery

I have this problem too.But if i flash last build,baterry life is good.

Redmi Note 6 Pro battery health under 20% after two months

In mid-January I've bought a Redmi Note 6 Pro Blue 3GB / 32GB. My idea was to use it mostly for music (Spotify and Google Play Music) and video (Netflix and IPTV streaming) as a secondary phone. I was so happy with its battery life and overall performance in the first couple of weeks that I even considered using it as my main phone. However, after less than two months of very irregular use, the phone's battery life dropped quite drastically.
I tried a factory reset yesterday, but the issue remains. AccuBattery estimates the battery health at 19% of the advertised 4000 mAh. Do I have a defective battery? Because this certainly does not look like a software issue - I also tried removing all the apps I could to ensure there is no battery hoarder eating away my battery's juice, including most MIUI software through the adb tools I've seen recommended in a thread here and no luck. It's probably even worse than before. What should I do?
I'm running the latest MIUI Global 10.2 stable 10.2.2.0 (OEKMIXM). No root, bootloader is locked.
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^ One and a half hours of battery life after charging it up to 100% post-factory reset. 15min after this screenshot, the battery is at 9%. How is this possible on a phone purchased less than two and a half months ago?

Charging while video recording by mistake, did i kill the battery?

I have Xiaomi 12s ultra, i was extremely happy with battery life.
One evening camera was recording while charging by mistake, when i wanted to check, it was 35>56 in 40 minutes, and phone battery charging was very slow because it was unbelievable hot. Did i just killed my battery?
I think battery is draining very fast after this. Can you share usage stats?
Is there any way to undo this, like draining battery to 0 and charging to 100?
Before this day i was using 20-80 charging method to save my battery. All efforts are gone i guess.
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Yes, phone batteries don't like charging and draining at the same time. However, it could just as easily have burnt out or permanently deteriorate the quality of some electronic component.

ze7zez said:
Yes, phone batteries don't like charging and draining at the same time. However, it could just as easily have burnt out or permanently deteriorate the quality of some electronic component.
Click to expand...
Click to collapse
Yeah i know. I hope camera sensor did not get any damage.
Yesterday i get about 5-6 hour screen on time, 14 hours without plugging with wireless internet only, %45 left. How much did my battery lost of its capacity with that incident? I guess my battery was better. Thanks for the chip in 12SU it didn't go on charging. It could have exploded.

Question 12S Ultra battery life

I made a mistake to my battery.
I'd like to see what did i lose, can you share your battery usage screenshot.
What i did bad to my battery :
Charging while video recording by mistake, did i kill the battery?
I have Xiaomi 12s ultra, i was extremely happy with battery life. One evening camera was recording while charging by mistake, when i wanted to check, it was 35>56 in 40 minutes, and phone battery charging was very slow because it was unbelievable...
forum.xda-developers.com
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Ask other users to post their battery usage screenshot remains very relative, indeed for absolute precision, it would be necessary that you use the same rom and especially with the same settings and that you use, for example, Chrome on the same duration, same for other apps.
Note that Wifi consumes more than data for certain uses.
Wi-fi Vs Mobile Data Battery Drain: Do Mobile Batteries Drain Faster On Mobile Data Than On Wi-fi?
Mobile data drains more battery than Wi-Fi because a continuous cellular connection needs to be maintained constantly with towers quite far away.
www.scienceabc.com

Seems like there is not a big problem. I'm sure it was bad in the first days. Xiaomi 12s ultra has a battery management chip, which is said to be repairing cells. It is doing what it says i think. Well done Xiaomi engineers. 5:30 SOT from morning to night with lte most of the day is simply amazing.