Questions tagged [battery-life]

Questions about Battery life (how long each charge last) or/and Battery Durability (how long until it needs to be replaced) should use this tag.

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25 views

Chrome using a lot of battery without being open

I got a new phone (pixel 4a) and chrome is using a lot of battery without being open. If I pause the app I get much longer battery life. When checking my battery usage by app chrome is always the ...
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24 views

Cant disable wifi multicast and constant arriving of data packets on rooted Android

Problem : I'm using public wifi in my college. (They won't allow alternatives). At least 40,000 students are using it regularly. I keep receiving data packets from the moment I turn on wifi even ...
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16 views

Check all-time usage of Pixel 4 XL

I bought a used Pixel 4 XL. How to check the all-time usage of the device? I checked battery and about in the settings without finding the all-time usage stats.
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24 views

Reducing Tx_Power for mobile hotspot - hostapd.conf

I am using rooted Samsung J2 pro with Marshmallow 6.0.1. My mobile hotspot uses a lot of battery. And this battery usage is reported by Android OS process by Smart Manager. I have reduced the tx_power ...
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1answer
66 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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41 views

The powerprofile and systrace outputs are not consistent

I'm generating the PowerProflie file and the Systrace file to get the energy consumption of an Android Application, but I found that the number of cpu cores is different between the two files. I'm ...
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75 views

Making LineageOS even more lightweight

How can I minimize the power footprint of my LOS? My device is rooted and I have Termux. There I can run $ su # htop and see that the device is running 83 processes (!). These are the processes ...
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29 views

Is it possible for an Android alarm clock app to not turn on the screen when it rings?

Recently, I asked this question requesting recommendations for an Android alarm clock that does not turn on the screen when it rings on Software Recommendations StackExchange. The reason I do not want ...
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26 views

Does software update decrease device performance? [closed]

I’ve been using an Android tablet for a month, and I’ve just got a notification on an update for my tab for Android 11 or One UI 3 (not sure if they mean the same thing). I’m on Android 10. Based on ...
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54 views

DNS over internal VPN?

I'm a newbie so, my bad if my question is a non sense to you. I'm currently renting a server where I installed PiHole and PiVPN. PiHole is a DNS sinkhole that I use for blocking add, and the PiVPN ...
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57 views

Does turning off cpu cores will actually save power?

My phone is using custom kernel that has cpu hotplug in it. The hotplug name is AutoSMP and it has max cpu (big & little) core that should be online option in it. Currently I'm using 3 + 3 core ...
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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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40 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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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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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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1answer
252 views

How to check if a new Android phone/tablet has got no factory reset yet?

I would like to buy a factory-new tablet (Galaxy Tab S6) so I would like to check if the device has ever turned on (since the production date) and also how to make sure no factory reset has done yet.
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21 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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24 views

My battery life dropped from approximetely 20 hours to less than 15 hours, how to find who is responsible?

My Samsung Galaxy S20 battery lifetime was up to 20 hours per one charge. The I have probably installed some apps, and the time is dropped to less than 15 hours. The phone is clearly warm during the ...
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22 views

Is it possible to change maximum battery capacity to a lower value?

AccuBattery says my phones battery health capacity is around 80-90%. Android and all other devices naturally keeps charging to 100%, even though it will only be 90% charged. To me, this seems to be ...
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34 views

(Xiaomi Mi 9 Lite) Mobile data turns off automatically when screen is off!

I have an issue with Mi 9 Lite, when I lock my phone, mobile data turns off automatically after a short period of time, it will turn on as soon as the screen turn on, I tried to enable "Mobile ...
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98 views

Making a device to simulate low battery early

I have device which is used commonly by a layman kin. She does not really understand, why spares the battery if we do not wait until it goes to zero. She thinks, the device needs charge only if it was ...
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1answer
55 views

S10 draining over 10% battery per hour while idling

My phone is less then a year old and I had my Screen replaced by Samsung about 2 months ago.(they also changed the battery and aluminium body).So the battery is almost new. About a week ago something ...
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1answer
54 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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1answer
711 views

Is it safe for the battery to turn on the mobile data all the time?

I usually turn on my cellphone Mobile Data & WIFI all the time because I don't want to miss SMS and Emails. I'm afraid the battery could lose capacity over time if I keep turning on the Mobile ...
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2answers
120 views

Reason of existence of An App named “-5”

I was trying to look at the battery usage of different apps and saw this weird app named "-5" on inspection it takes me to google photos which is weird since why will google photos use its ...
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1answer
74 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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21 views

Moto e4+ fast charging issues

My moto e4 plus is 2yrs old.Suddenly at 75-80% it's charging rate drops then after a while suddenly it charging very fast after that stoppage.can anyone tell me reason !please
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1answer
40 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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1answer
7k 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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1answer
51 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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2answers
2k views

Understanding Samsung Power Settings

I'm quite confused about Samsung's "App Power Management" page. There seems to be several overlapping settings: Adaptive Battery - Limit battery for apps that you don't use often Put apps to sleep - ...
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2answers
432 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
157 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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2answers
798 views

how to get battery percentage back in status bar, Android 7.1.1

I have a Samsung Galaxy J2 Pro running Android 7.1.1, and Samsung Experience version 8.5. How do I get the battery percentage into the status bar? I am sure it was there until yesterday (unless I am ...
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2answers
378 views

How to automate sending my current battery percentage to PC over the internet every 5 minutes?

I'm using Android 9 on my device, there are many times when I'm away from my phone and it is charging in a different room or someone else is using it, is there was a way to send over the battery ...
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91 views

Android 5.1 prevent USB Ethernet interface to go into sleep/suspend in AC loss (PM)

We are using MT8163 based Android device which is connected with TP-link based USB-Ethernet device over MT8163 USB host. Our requirement is to prevent the TP-link USB-Ethernet dongle to enter sleep ...
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1answer
6k 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
828 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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26 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
442 views

Root to set a battery limit and unroot again?

I dont have any practical experience with rooting my phone. There is one thing that's been bugging me for a very long time: I need to be able to set a charging limit on my Pixel 2 since I dont feel ...
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2answers
10k 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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128 views

“Urgent Results” from LG V30 Smart Cleaning

I have an LG V30 (on Verizon, but I doubt that's relevant) that's about a year old. A couple of weeks ago, it updated to Android 9.0 Pie. Ever since that update, about once every 48 hours, I've been ...
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1answer
209 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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1answer
694 views

High battery drain on Nexus 6P with Pixel Experience

I have a nexus 6P with a fairly new battery (some months). It worked quite well, until I decided to flash Pixel Experience because it is the only ROM I found which supports the 6P with Android P. ...
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1answer
372 views

Prevent dark mode from activating during battery saver

I just updated my OG Pixel 1 to Android 10. I normally use light mode (not dark mode), but my phone just hit the threshold to turn on battery saver mode, and now it has forced my phone into dark mode. ...
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2answers
652 views

Pie 9.0 Low Battery Notification Not Working (Moto G7)

New Moto G7 running Android Pie 9.0 Everything else works fine. The issue I'm having is with the Low Battery Warning sounds and notifications. Simply put, I want the most annoying low battery ...
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1answer
213 views

How does degoogling affect battery?

Google apps especially play services show on top in RAM consumption and always have few processes running. Also these apps are very bulky. By degoogling I mean disabling GSF & Google play ...
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1answer
22 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
23 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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2answers
4k 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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