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

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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20 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
42 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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19 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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33 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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38 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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15 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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15 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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115 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
30 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
35 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
81 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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1answer
51 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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30 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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132 views

Xiaomi Redmi 7 disable Battery saver notification

I have Xiaomi Redmi 7 with Android 9 and MIUI Global 11.0.3 After my battery goes to 20% and then after to 10% I am getting this notification to Turn on Battery saver. How can I disable it? I don't ...
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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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22 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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1answer
157 views

Is the battery cycle count stored on the battery or the device?

I downloaded an app Phone INFO which shows a number of stats, particularly "Battery Discharge Cycles". I want to know if this number is being retrieved from the battery (i.e. it's just the number of ...
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14 views

My 'Android System' and 'Android OS' draining 40% of used battery

My mobile randomly switches off and on automatically once in a day. Also it gets cooled while charging normally(not fast). I am using lyf F1s with android 6.01 I have used:  safe mode Greenify App (...
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26 views

Is it possible to show battery level for paired Bluetooth devices in Android 10?

I wonder if there is possibly to show battery levels for paired Bluetooth devices in Android 10?
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1answer
50 views

What is the name of the app in the screenshot?

App, in the attached picture, shows screen on time and app usage history. If anyone knows the name of this app; please mention.
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1answer
35 views

Uber Driver app using too much resources

So, I'm working a bit as a bicycle courier for Uber Eats. For this, I have to use their app Uber Driver. Problem is, my phone battery (which still holds charge well) is draining very, very fast when ...
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2answers
58 views

Do fast charge technologies wear down the batteries quicker?

There are plenty of fast charge technologies out there, now seemingly going up to 120W, which can supposedly: ... capable of fully charging a 4,000mAh phone battery in just 13 minutes ... Now I am ...
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1answer
39 views

Battery icon has a question mark in it

I checked a lot of forums, like a lot, but no one had my exact problem. I have an ASUS Tablet with Android 4.2.2 and the battery icon in the notification bar has a question mark in it. At least when ...
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0answers
223 views

Google app draining battery in background

Google app draining lot of my mobile battery life, even i did't use google app and assistant at all. here battery statistics: App: Google version 10.33.5.21.arm64 Total battery drain: 48.48% ...
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20 views

dropped phone in water and it had holes in it what do i do?

I dropped my lg sty lo 3 in water on accident and it had to holes in the screen the phone turns on but it does not let me click on the screen I put it in rice but it does not work and I don"t have ...
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26 views

Any way to send battery statistics to a computer?

I'm working for a company that has several samsung galaxy tablets in the field, we want a way to determine when their batteries are going bad before they stop working completely. Ideally, we'd be ...
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20 views

Android 9 “battery fully charged” icon flickers: What does it mean?

With my Samsung S10e phone fully charged, when I unplug it from USB then re-plug it in, the "battery fully charged" behaves like this: appears and disappears a few time quickly stays visible for 5 ...
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3answers
223 views

What is the fastest way to shutdown unrooted Android phone?

Sometimes I need to have my phone shut down as fast as possible. In older phones I was able to remove the battery, but after some "innovations" this feature is no longer present. Is there any better ...
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22 views

Technical explanation for crazy Android Mediaserver battery drain bug?

On many forum posts, ranging mainly from 2014 to 2017 (it took Google that long to fix this critical bug?!), people reported experiencing a rapid battery drain by Android's media server process. I ...
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6 views

Having trouble powering up my phone with another power source

I am having a bit of trouble powering my phone I got a Lenovo A7000 plus which is the same as K3 Note version and this phone uses BL243 battery Here is some information about the battery Typical ...
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7 views

Is it possible to use K3 Note without a battery?

I have been using my phone mostly as a modem and I wanted to know if it's possible to somehow use K3 Note without a battery using a 3V or 4V adapter
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25 views

'Recycling' off-the-shelf Android devices as server ('Toaster-Net')

Since Android devices tend to be relatively low-power un*x devices, this seems like an obvious usage, I was already able to run the basic setup of what I had in mind, but I think it's a right time for ...
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76 views

Phone only charging in offline charging (when powered off) Moto X play

I'm struggling with this issue for about two months now. ISSUE Phone, when on slowly charge to around 65% (rarely reaches 100%). Around +10%/h. Ampere reports battery overheat, when it's 25-32 C. On ...
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1answer
21 views

Really strange battery issue?

So, I don't have a picture, but my Android phones batter is on the fritz. At first it just started draining quickly so i checked if I had any apps that where draining it quickly but I didn't have ...
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41 views

How can I see the estimated time until battery fully charged

In all Android phones I had so far I could go to the settings -> battery and while charging a nice plot displayed an estimation on how long it will take until the battery is fully charged. I am using ...
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12 views

Force charging/rebooting an android phone

I got a new phone several monthes ago. I've basically let the old one, a Samsung Galaxy S7, sit around untouched ever since. But I recently realized there is some info etc. on the old phone I still ...
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16 views

Battery problem. “Charges” while unplugged

I could not found any post with the exact same problem as me. So, here's the deal: For some odd and unknown reason, my battery percentage increases as if it is constantly charging. Let's say drain ...
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53 views

Is it a Kernel or a ROM that provides power_supply battery files?

Long story short I was installing custom ROMs to my Android device and one thing that stays in place regardless of ROM I use is a wrong battery stats monitoring. The device always behaves like it's ...
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9 views

Multi-media library, sone problems

Can someone kindly tell me 1) how many bytes occupies the Android multimedia library, precisely the memory size of the app, and the data memory size (currently my device signals 0 B for the app!), ...
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24 views

What is correct way to calibrate battery?

I've watched videos and referred some random sites. But I'm not sure if these steps are correct. I used battery calibration app but that doesn't help. I'm using Asus Zenfone Max Pro M2. Running ...
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0answers
12 views

Honor 8 bricked after batter replacement

I replaced the battery myself. After finished, I trun on the phone, it vibrates once and the screen light up a little (hardly see it) but cannot boot. When I press and hold the power button, it turns ...
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22 views

New Samsung Note 9 battery charger compatibility

I just bought a new Samsung Note 9 (Exynos 9810). Little did I know that the model I ordered was the EU version and not the US version, so the charger I received was unusable with any of my power ...
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20 views

What is solution for automatic battery draining?

I'm using Asus Zenfone Max Pro M2. Running on pie. It has 5000 mah battery. It should long last upto two days. But hardly getting one day battery backup. Even for minimal use. And battery ...
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0answers
20 views

How to to do background restriction to all possible apps in Adaptive Battery?

In Settings > Apps, we can tap each app and apply battery background restriction. But, how to to apply background restriction to all possible apps in Adaptive Battery? Is it possible via an app or ...
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25 views

Battery Protect overrides Do Not Disturb no visual notifications

Android Pie v9 (also occurs on v8) Charge phone at night during winter. When the inside ambient temp drops to 12c or lower the large bright white battery protect notification illuminates the display ...
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15 views

Galaxy S8+ occasionally gives off a brief 5 tone signal. Why?

After two years of use my Samsung Galaxy S8+ split open. Samsung original repair shop told me the battery had swollen and changed it one week ago. The phone works, but it now gives of a signal (~5 ...
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1answer
224 views

How to turn off ultra power saving mode that was enabled for Huawei Android while it was on low power?

My Huawei Android was on low power and it proposed to turn on ultra power saving mode. I accepted it. Now I have connected the phone to the charger but I can not enable other power modes. I am going ...
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3answers
89 views

Is it true, that Trump sanctions as of 01.06.2019 have started battery drainage on Huawei Android mobile phones?

It is 1st of June 2019 and new round of sanctions have started under Trump. And severe drainage of battery of my Huawei Android phone has started as well. 20% of batter is gone under just 1 hour. ...

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