Questions tagged [battery]

For questions related to batteries on Android devices. Questions about battery life should be tagged with [battery-life]

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12 views

Why are battery optimization options getting reset after every upgrade and how to prevent this?

One problem that results from this beyond having to change the settings after update is that firewall apps can get disabled. After every update the NetGuard firewall was disabled which may be caused ...
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31 views

Is possible to see battery status of a bluetooth audio device if is not used for calls?

I have bluetooth audio receiver which shows its battery level in Bluetooth settings. But when I disable Phone calls for this device, can't see battery level anymore. It's even possible to see it ...
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OPPO A15 (Help me sort out this problem quickly) [duplicate]

My OPPO A15 android is heating very much at the right hand corner and as the temperature increases the touch of the display stops working. I tried factory reset and data wipe few times but it didn't ...
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14 views

Removed battery while phone plugged in

I accidentally removed the battery from LG G3 while plugged in and charging, does this damage the battery or the phone?
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14 views

Battery indicators differing when phone is on and off

When it is on, it charges until a certain percentage (around 50 or 60) and gets stuck. Then, I power off to charge and the indicator appears as 100%. Why is that? I know my phone (Freetel FTJ162D, ...
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30 views

Is there a way to make the battery level easier to see on some Android phones such as Xiaomi?

I looked at the battery level on Samsung A32 and it was easy to look at, but on Xiaomi it looks like this: Is there a way to make it easier to look at? Right now I have to go to Settings -> ...
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32 views

Battery for Samsung Galaxy S8

I am looking to replace the battery in my samsung galaxy s8. Amazon shows many available batteries, ranging in capacity from 3000mAh to 4350mAh, all about $20 or less. The one and only authorized ...
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1answer
55 views

What is the approximate battery discharge rate of Google Pixel 3XL phones when turned off?

I am considering purchasing a new Google Pixel 3XL Android phone, primarily for photography. I don't believe those phones have been manufactured for 2-3 years, so I am concerned about the battery ...
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36 views

Battery drain while doze, CPU abort wakeups

I'm running Android 11, in a Moto G30. I've noticed battery drains from 100% to 80% from 1am to 9am when I wake up. I decided to get a bugreport.zip using ADB and load it in Battery Historian. Seems ...
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35 views

Galaxy Note 3 blacks out on rebooting at lock screen

I'm having trouble rebooting Samsung Galaxy Note 3, where it starts rebooting after holding lock button, but blacks out when/before it reaches lock screen. After blacking out (or before rebooting) it ...
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Disabling Samsung battery management from putting my apps to sleep when the phone screen is turned off and running on the battery

I'm looking to disable Android's battery management. On my Samsung S10 Plus running Android version 11 are several apps running in the background, but they only run when the phone's USB port is ...
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23 views

What are android batteries PIN type?

I'm trying to determine the different PIN types of the batteries used in Android, specifically to those batteries that use flex cable. For example; The image above is a sample of batteries for Xiaomi ...
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How to disable battery saving when battery level is below 15%?

I used an old tablet to operate a smart home. In order to work continuously, I took the battery out of it and connected it to a 4V power source, which works continuously. Based on the measured battery ...
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Xiaomi phones battery compatibility

Xiaomi phones have several batteries, for example, BM35, BM21, BN43, and etc. I'd like to know the compatibility of those batteries, for example, if BM35 has the same pin and size as BM21 something ...
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21 views

Nokia 5.1 Plus maximum charging power

I would like to know the maximum power a Nokia 5.1 Plus get to charge in watts and amperes .
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34 views

My battery drop from 60% to 0%

So i have this problem with my original battery. When my battery drop below 60%, its immediately change into 0% and died 30 second after. And when im charge it, the battery fills from 0 to 50% and ...
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30 views

Which wi-fi band uses more battery? [duplicate]

I have an Android device that supports both 2.4 and 5Ghz bands. Also my WiFi router is dual band. I know that 5GHz band supports higher speeds but the difference isn't significant for my connection ...
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37 views

Is it better to charge your battery above 50% or let it go down, technically speaking? [duplicate]

Following up on this question: Is it better, when the battery is at 40% to let it drop (use the phone until it's 30% for example) or to let it charge to 70%? As far as I understand 50% is the "...
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28 views

Why is my phone dies at 90 percent

My phone is Samsung J7108. It dies when it reaches 90 percent and it will turn on once again. But then, when it reaches 80, it will die again. I have to plug it on charge so that it will die down. I ...
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28 views

Switch off the backlight of the LED screen of the android phone, while using it as a webcam via iVCam

I have upcoming exams which shall be remotely monitored through webcam. Now the thing is that I do not have an actual webcam and I have decided to use my android phone as a webcam via iVCam (using USB,...
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1answer
40 views

Is it possible to keep phone plugged in a powerbank when the battery is worn out?

Is it possible to glue a powerbank to the back of a phone, and keep it plugged in permanently, if the battery has been worn out?
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17 views

Help with ultra power saving mode bug

I have a Samsung Galaxy S5 with a major problem. One night while turning the phone to Ultra Power Saving Mode the phone immediately shut down. I left the phone o charge and the next morning I woke up ...
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1answer
51 views

Should I change the battery of my Samsung A7 (2018)?

My phone shut off completely a few hours ago. It was at 20% and somehow it jumped to 0% and shut off. I didn't know what happened so I just put it to charge. I had this phone for 2 years, if not 3. I'...
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61 views

Low CPU use, but HIGH battery use! How?

This file sync app is active for 8 seconds, keeps awake for zero seconds, and yet uses 25-30% of power in a given day. What could an app be doing to drain battery, without showing up as CPU use time? ...
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20 views

Is there a way to “Ignore” an Android phone's battery percentage reading?

Dumb question, but bear with me: I have a Sony Xperia XA1 Ultra (G3223) in my drawer, intact, except with one thing--A glaring battery problem. About half a year ago I made the mistake of using it ...
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310 views

Are there any issues with allowing the KLMS Agent app (part of Samsung KNOX) to be restricted by Data Saver?

I use the "Data Saver" feature to extend battery life and to prevent/reduce apps from accessing the internet when the phone/tablet is sleeping and when they are not supposed to be running. ...
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45 views

This adb command isn't working for some reason?

Hi so I have a android 10 and I wanted to try this command so my apps in the background will stop being killed and actually work adb shell am stopservice com.android.systemui/com.hmct.systemui....
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85 views

How can the battery get discharged while Ampere is showing that it is charging?

How can the battery get discharged while Ampere is showing that it is charging? Example: At 1:06 PM, the battery indicates 2%. At 1:08 PM, the battery indicates 1%, even though Ampere says that the ...
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1answer
36 views

All apps deleted [closed]

Please help, I was trying to power on my Android phone, it took longer time than usual but when it eventually Powers on all my third party apps had been deleted but my files are still intact, what ...
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24 views

Why does my phone battery die at 0% then it has more battery when I turn it on again?

So after dying at 0% when I turn it on again, it can have more battery like 26%. Why does this happen? Does this mean my phone has a virus?
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53 views

What to do if my Samsung Tablet keeps restarting

My Samsung S5e Tablet keeps restarting almost every few minutes if I use it or not I have sent it in for repairs but when I got it back It still keeps restarting its just been over a year since I got ...
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31 views

Reading battery level/voltage via USB port

I'm interested in creating a device that needs to externally monitor the battery level or voltage of the phone via the USB port. I haven't had much experience with the inner workings of Android, but I ...
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24 views

Do Android “charge and use kits” exist?

I have successfully Twitch streamed out from my cell phone. Why a cell phone?; It has WAY better internet speed than my home connection,(10M out for cell vs 400k for home) and the bandwidth is not ...
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106 views

Suppress “battery charged, unplug” notification in Android 9

There are some older questions about this (2013 for 4.0: How do I get rid of the "Battery fully charged, unplug charger" popup screen? ; and 2010 with a 2016 answer: How to disable battery ...
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35 views

Samsung Tab E keep turn on automatically

i have a Samsung Tab E SM-T561 and every time i turn it off after 2/3 seconds its turning on on its own. I already tried this: Hard Reset (several times) Battery replacement I noticed that if i ...
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1answer
340 views

OnePlus 8T battery capacity

Using the AccuBattery app I'm told that the design capacity of the battery is 4500 mAh, but after 3 significant charging sessions the current capacity is 2095 and has never reached 50% of the design ...
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48 views

How to keep running Android tablet with dead battery

I‘m using Android Galaxy View tablet as photo-frame, integrated in the wall with AC adapter connected constantly 24/7. The problem is the battery inside tabled dies each year. And when the battery is ...
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16 views

Is it possible to keep the user data with a smartphone that boots to the data wipe menu?

My smartphone turns on without passing the OS loading screen, then loads the recovery menu (Redmi-Recovery 3.0). I can't turn off the device, I tried waiting for the battery to run off, charge it and ...
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90 views

Screen on when charging on powered off phone

The issue My phone's screen is always on when I charge it while it is turned off. It displays this image: And the screen cannot be turned off. I believe it is not charging either, but I can boot it ...
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34 views

What is this symbol on the battery? [closed]

What does this mean? It is one of the many symbols and logos on a phone battery. I know it's not technically an Android question, but at least it's related, and I couldn't find a more suitable ...
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1answer
97 views

ADB Wifi loses connection when device's screen turns off - Realme 7 - Android 10

I work on Android Studio while using actual device for ADB using ADB over tcp/ip through command prompt (no additional software). But, this new device gets offline the moment screen turns off. I've ...
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66 views

What does “REMOVE ACCOUNT” in “Users & accounts” do when it comes to fixing the FAQ WhatsApp problem “Seeing numbers instead of contacts’ names”?

On Sunday, 13th September 2020, the battery of my Motorola Moto G5 broke down and I ordered a new one. Yesterday, on Friday, 18th September 2020, it finally arrived and everything worked just fine. ...
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1answer
37 views

Telegram does not recognise account after being offline for almost a week due to battery failure

On Sunday, 13th September 2020, the battery of my Motorola Moto G5 broke down and I ordered a new one. Today, on Friday, 18th September 2020, it finally arrived and it works just fine. Several errors, ...
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30 views

Battery Voltage and Percentage

I have recently bought a battery replacement, and not happy with the performance I have been monitoring its levels. I have obtained this graph, and one thing that surprises me is that the voltage ...
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27 views

Is this “app” malicious or is it a bug? [duplicate]

I was examining my battery usage and noticed this: I don't know what this "-5" app is supposed to be. Could it be malicious or is it just a bug? I own an OnePlus 6 with Android 10 (OxygenOS ...
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28 views

Android battery usage for a specific app

Recently, I developed a mobile application which significantly consumes the smartphone battery due to some of the functions of the application. I want to have a precise measurement about the battery ...
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1answer
51 views

What can I do to slow down battery degradation of portable power bank for my Android phone?

I just got Inland USB-A 5,200mAh Power Bank w/ LED Indicators for my android phone. It has a one-year warrantee, which seems to tell that its battery might degrade significantly after one year of ...
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48 views

How to enable High power consumption setting in Vivo Y50

I want to programmatically enable the High background power consumption setting for an app. Adding it to deviceidle whitelist is not working. I tried this adb shell dumpsys deviceidle whitelist +com....
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1answer
153 views

Help diagnosing constant CPU usage of phone during sleep (Battery Historian Chart)

I saw a great Battery Historian guide and decided to try it out. I noticed that last night while my phone was unplugged, the "CPU Running" bar was active the whole time when I was asleep. ...
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34 views

Reviving my phone after a small part of it (eg the processor) overheated

I tried to compress my 1.6GB video in the Media Converter app by exporting it to mp4(h264,aac) on my OnePlus 3 as per https://www.quora.com/How-do-I-reduce-video-size-on-Android. However, ...

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