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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16 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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26 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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19 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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23 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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18 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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27 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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18 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
53 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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21 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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22 views

Smartphone not charging when turned On

Smartphone: Xiaomi Redmi Note 7s I have been charging it with Pixel XL's charger for 4 months. It stopped getting charged while turned on yesterday. If I turn off the device then it will take ...
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15 views

Xiaomi Redmi 5 Whyred turns itself off

My Xiaomi Redmi 5 Whyred started shutting down randomly - rarely enough to make is hard to reproduce. So far happened once during a day and every 2nd night. I am using a Havoc-OS 2.9 (Based on ...
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24 views

automatically power on android when charge is 20% or 10%

I know its duplicate on Power on when charging but only when battery level is greater than 20% but it seems that question has no answer and also android version has changes a lot , I am on Android 10 ,...
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What shall I do if I damage battery?

I've been disassembling phone - Xiaomi Mi 5X/A1, in order to change crashed screen. However, while I was trying to remove battery, I probably cut battery cover, so I can see white slices and sharp ...
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33 views

How would one simulate a charging experience on a real android device?

I possess a Samsung Galaxy S8 with Samsung Global Goals installed. The app allows you to donate based on ads viewed during the time the device is charging. Would be possible to essentially 'fake' the ...
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80 views

Android control battery charge programmatically

I'am using a Linage Android image (rooted) to control the battery charge and discharge with the commands: Charge: echo 0 > /sys/class/power_supply/battery/batt_slate_mode Stop charging: echo 1 >...
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31 views

High battery usage (no wifi no apps no wireless)?

I've noticed that I lose about 20% battery each hour while my phone is unattended and offline. I check the battery settings and find that no apps are running. The phone is rooted, and I'm wondering ...
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1answer
47 views

How does Battery Management System work (at the hardware-interface level) ? And how is idle self-discharging of batteries handled?

I came across the following when I was reading up about fully drained batteries in phones: If the phone is OFF for a month, then it is probable that the battery has gone down to a point that the BMS ...
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2answers
224 views

How do I change the Battery Percentage that corresponds to a Voltage in Android

My original Li-ion has 3000 mAh capacity. I've modded my device to have a total of 7000 mAh capacity now. The enhanced capacity means that my percentage is not displayed accurately anymore. About ...
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32 views

Phone overheats after powering on

I've seen this with plenty of smartphones,usually after 1-2 years of use.The phone overheats for a minute or 2 before cooling down,but it's performance doesn't differ from a non-overheating phone that ...
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29 views

Battery drained

Since 2 days ago my phone can not last more than 12 hours in airplane mode. The battery is drained by something. adb shell top shows that system_server is using 100% of CPU. adb logcat | grep 1577 (...
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1answer
36 views

Is it possible to determine whether a purchased phone has a new battery?

I recently purchased a Samsung phone that was listed as "factory refurbished". Something I found on Samsung's website says that factory refurbished phones will have a new battery installed. However, ...
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34 views

Getting data of phone with dead battery

I have to get data off an old Zuk Z2 Plus that was working when it got replaced by a new phone and left lieing around for a year or so. Now it does not boot any more. When I plug in power, the screen ...
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19 views

Can I preserve phone battery remotely?

I lost my phone and connected it to my computer via Google account so I can check it's location, commend it to beep, etc. However, I will be able to retrieve it only tomorrow and by then it will ...
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1answer
71 views

Why does the phone shutdown and battery drains super fast on 20% or less capacity when taking pictures?

When the phone is 20%ish or lower battery, after taking pictures the os shuts down. I have observed this behavior on 5 different brands (lg, samsung, lenovo, xiaomi, oneplus), across different ...
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95 views

My LG G5 battery is stuck inside the device and I have a frozen 'Firmware Update' screen. Please help

My LG G5 phone is stuck on a screen saying 'Firmware Update'. It has been at 0 percent for hours now and there is a code that says 633A B50. I would have tried to remove the battery, but the bottom ...
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1answer
3k views

Don't charge the battery but use connected power to run the phone

Answers to this question Is power consumed from battery to run the phone when charging? explain how charging while phone is in use does both - charging the battery and powering the on going activities....
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28 views

Sony Xperia XA1, overcharing battery damage?

My cell phone is a Sony Xperia XA1 and it has Android 8.0.0 I think that when I got the phone the manual might have said that the phone has built-in protection from overcharging. But I am not sure. ...
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1answer
47 views

Is it a bad idea to let your phone keep charging all the time?

I read somewhere that long periods of charging can be bad for the battery and the best level to keep your battery at is around 50%. Is this true? If it is then after how long will the battery show ...
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1answer
34 views

Android battery pinout

I have an Lollipop EDC. That Android has battery with 6 pinouts. How to get information about battery pin-out via ADB?
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726 views

Huawei P30 Pro I can't set sleep mode to never

I just got my new Huawei P30 Pro and I am not able to set sleep mode to never. Maximum option available is 10 minutes. My battery mode is correct and it is set to "highest performance" so without any ...
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2answers
134 views

How to make an Android smartphone actually go to sleep?

When I turn the screen off on an Android smartphone, I want battery life to be conserved. Thus, I don't want any third-party apps running in the background, and I don't want the device periodically ...
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1answer
107 views

Process “irq/288-wcd9xxx” draining battery, how to stop it?

I'm using a Fairphone 2 with Fairphone open OS, under Android 7, (build-number: fp2_sibon-userdebug 7.1.2 19.11.2 sibon-24df0be9), up to date. My battery loses systematically 50% to 90% overnight, and ...
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583 views

Is it possible to boot a Android smartphone without battery with charging wire on?

Problem The title of this post seems a funny challenge. But frankly, there are a lot of worthy points involved in this question. If a Android phone support rapid charging. If its battery is removed, ...
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33 views

Samsung Tab A6 won't leave battery screen or turn on

I'm currently having issues turn my A6 on, in that it simply won't start up. I have tried: Holding the Power and Volume Down button, Holding the Power button for 30 secs, changing cables, changing ...
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58 views

How to get the battery status from an Android phone with Python connected to a PC via Bluetooth?

Is there a way to interrogate an Android phone with Python on a PC and/or Linux to get battery status while connected via Bluetooth?
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1answer
173 views

Meaning of two low battery screens on Acer Iconia tablet?

According to https://community.acer.com/en/t5/Android-Tablets/Iconia-tab-10-A3-A20-won-t-charge/m-p/513098/highlight/true, Hello, my tablet was working fine for a year and suddenly won't charge up. ...
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20 views

Phone shuts off in 3g

I have a Moto Z2 Play with Android 8.0.0, about 3 years old. Whenever I go out of range of 4g (to 3g), the battery goes from 100% to 80 or 70 in a couple minutes and then to single digits very quickly ...
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40 views

Is there a difference between disabling app notifications in-app vs. Android OS?

Is there any effective difference between disabling an app's notifications in the app itself vs. via Android's per-app notifications panel? I've defaulted to first trying to disable any notifications ...
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523 views

Phone stuck at 0% battery

I have a Moto G phone. I'm using LineageOS. Yesterday I notice my phone went dead. When I press power button, a white light in the camara flashes three times, which I understand to be no battery. It ...
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21 views

How dose a phone know when it has a battery in it or how to make it think it has one

Im trying to game on a samsung galaxy s7 edge without a battery on it but it just turn on shows a logo and then turns off again i think it knows that there is not a battery inside so if anyone knows ...
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29 views

What is the messaging_service_work_wakelock?

I have recently started to get a bit of battery issues so I decided to install BBS and have a look at the partial wakelocks. One thing which stood out from the dump was that while the rest of the ...
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1answer
1k views

Battery drain issue on idle phone, how to find out the culprit?

Overnight, starting from a 100% charge, all apps closed, even from a fresh reboot, screen of course off, my phone (Redmi 6) ends up with a ~90% charge. I know this is abnormal, as my previous phone (...
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21 views

No package even after package installation

After viewing the YouTube app that came preinstalled in my Android TV Box (Android 7.1.2 OS) for about 6 hours without any problems, now when I launch the YouTube app I get "The installation package ...
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1answer
339 views

What is the standard operational battery temperature for the Note 9?

Bought the phone a week ago & today it seems to be running slightly warm just surfing sites in Chrome. Downloaded a battery app and see that the battery temp is at 32 degrees Celsius constantly ...
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1answer
942 views

Battery drains when phone is turned off

I have a used Samsung Galaxy S3 Mini GT-I8190. When I shut down the phone the battery still drains. The longer I leave the battery in the shut down phone the more charge it looses. Typically the ...
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2answers
332 views

If I install an aftermarket “Always on Display” app, will it cause excessive battery drain?

I am shopping for a new phone and it seems that my beloved notification LED has fallen out of favor, so I am willing to settle with Always on Display (AoD) as a second best. I have been reading some ...
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56 views

How do I totally disable my phone?

I've bought a very cheap Android 8.1 tablet (which has 2 sim slots) just to play about with. As it's cheap, the battery isn't wonderful and it has a very short life before it needs recharging. The ...
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65 views

How to increase the sample rate of the current measured from the Android kernel?

I need to monitor some applications power consumption of my Samsung A8, programmatically. I'm doing this by accessing the files: /sys/class/power_supply/battery/current_now /sys/class/power_supply/...
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22 views

Abrupt drain of battery

Here is screen shot . Is it normal , or should I go to service center ? My previous phone had much less sloppier curve . When I bought the phone I charged it upto 100% and then started using it , ...
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23 views

Inaccurate Battery Consumption Metrics: Is This Behavior Normal? [duplicate]

I own a OnePlus6 running OxygenOS 9.0.9. I noticed that lately my battery doesn't last as long as it used to. I used the Battery Monitor app to check if there's anything suspicious. This is what I ...

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