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

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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5 views

Would charging fully, reduce the battery life? [duplicate]

I heard 100 percent charging reduce the battery life, will longer 5 years. Whereas charging 90% would not affect the and will longer for 7 years. Is that all also myth or truth?
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49 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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20 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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53 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
39 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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12 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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22 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
45 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
32 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
54 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
30 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
174 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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25 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
182 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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15 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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0answers
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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0answers
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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24 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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51 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
19 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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0answers
20 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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11 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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0answers
34 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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0answers
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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0answers
16 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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16 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
18 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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23 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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14 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
89 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
87 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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2answers
614 views

Why is “mdnsd” draining my battery and how to stop it?

This process (mdnsd) had been draining my battery for a few weeks. I have not been able to find a solution after a lot of search. I don't have any drone app, Facebook app or Firefox, although it's ...
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0answers
20 views

Nokia 1 phone usb tethered to Asus 51U router..insufficient charge

works fine..unlimited data on phone with a usb cable connection from micro usb in phone to normal usb 2.0 on router. These routers can use usb connection is selected as source. Problem...the half amp ...
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42 views

How to take battery out of phone

I want to take the battery out of my LG phone, but how do I do it? Having problem with it being stuck on a Firmware Update. It is only 1 year old. Or should I take it to the AT&T store to have ...
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0answers
11 views

Can you judge a battery by idle up time?

Is how long a pixel phone lasts when idle an indication of the battery health. For instance, is the graph below a reliable indication that this particular pixel xl has a healthy battery?
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16 views

Multiple chrome tabs impact

I am interested in finding out how much impact on battery usage,data usage and memory/ resource drain does occur on my Android 8.1 (Oreo) when I have multiple instances of apps ( facebook 3 pages ...
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1answer
21 views

Battery was once swollen, but is now normal

My tablet (specs below) has a swollen battery, but is now normal (back to its normal size). It was swollen many years ago, so I just left it. Now, I just found it and it is now unenlarged. I don't ...
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0answers
1k views

How can I fix a charging problem on Moto G5 Plus?

A Moto G5 Plus device (Android 8.1.0) was charging and performing normally with a healthy battery response. One morning, instead of being at 100% (expected after charging all night), the phone ...
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40 views

Where can i locate the file responsible for activating charging in my jellybean and kitkat android?

I have Tecno H3 running android 4.4.2 kitkat and Tecno P5 running android 4.2.2 jellybean. I want to completely disable charging at 85% and re-enable it at 50% without rebooting the phone. So i went ...
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0answers
50 views

Can Android stay in doze mode even with an active screen in last Android version?

First of all, sorry if this question doesn't belong here, I wanted to ask on meta if I coudld answer this, but I'm unable to. Anyway I think it fits more here than in stackoverflow. If it's not the ...
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1answer
99 views

Leaving phone plugged in all the time?

I have a spare OnePlus One that I use for home automation stuff (RM Plugin, Tasker, etc.) I leave it plugged in all the time. Sometimes the phone does get quite hot. Just today, wanting to do more ...
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0answers
86 views

Why does my Samsung Galaxy S8 Active no longer “Fast-Charge”?

I bought a refurbished Samsung Galaxy S8 Active in excellent condition about 6 months ago, and it came with the standard manufacturer-provided power adapter and cable for charging (Model: EP-TA20JBE, ...