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

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13 views

Phone working without electrical component [on hold]

While I was replacing the battery, I detached a component with my fingernail. Which component is it? Image > https://i.stack.imgur.com/ZPkCL.jpg Device name: Xiaomi Redmi5 plus You can see the ...
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1answer
26 views

Change battery meter behavior

I heard that charging li-ion batteries to less voltage value heavily increases number of (charge-discharge) cycles, while decreasing phone work time(energy return from charge) only for a little. ...
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22 views

Keep android phone running for days

This is our situation: We have an android tablet that must run some stuffs for longer than one day (running videos, musics or other). For this purpose we attached our tablet to an external battery ...
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39 views

How to optimize all my apps in “Battery Optimization”?

I have xiaomi mi max 32gb -Multirom 8.4.26 I make all my apps "battery optimized" except these apps: (Greenify+amplify+powernap+Launcher+Appops+Magisk+ Xposed). But after rebooting my mobile, apps ...
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1answer
21 views

How to reduce power consumption? - Honor 7

so I have an honor 7, had it over 2 years now. It has seen better days, I need a new phone however don't have the money as of yet. The phone must always be connect to a charger, using a fast charging ...
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1answer
76 views

Difference between system files charging_enabled vs battery_charging_enabled

I have a oneplus2 and I need to know the difference between charging_enabled vs battery_charging_enabled files present in /sys/class/power_supply/battery I am using an app called Battery Charge Limit ...
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31 views

Is battery temperature reading, dependent on the ROM that is installed on the phone

On my original Android installation, the battery temperature was 31-37°C depending on what I was doing. Now I've installed a custom ROM and the temperature is usually 35-41°C. This 4°C difference is ...
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17 views

Does CPU Overclocking will delay the Push Notification?

I was using Greenify. But no problem is there. When I installed Kernal auditor and Overclocked my CPU, I saw a delay in Receiving notification from Messaging apps. Like, Message is sent before 5 mins ...
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21 views

Is this normal? My Samsung Galaxy S8+ went from 100% to 42% after 12 of 14 hours of little to no use

I mainly just used it for NFC pay and messing around with bixby/google assistant for like max 10/15mins. Samsung power saving mode has been on the entire time. I haven't had a new phone for a long ...
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148 views

How to make Battery Saver Mode settings permanent?

And I have set my Battery Saver Mode settings as follows: $ adb shell $ su # settings put global battery_saver_constants "animation_disabled=true,vibration_disabled=true,adjust_brightness_disabled=...
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30 views

Phone dying at 23% charge

I changed the battery of my OnePlus one (original and new, from EBay). Everything went well, the new battery seems to do its job. But now my phone keeps turning off and vibrating at 23% charge.... If ...
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1answer
63 views

Prevent disable power saving while charging [root]

When I plug my phone to solar cell cpu optimisation turns off and the speed of discharge increases severalfold. How to prevent cpu always on when phone charging? Phone: Rooted Samsung Galaxy S III ...
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18 views

How to know power consumption at the moment?

From time to time my Samsung Galaxy S7 is starting to consume a lot of power, turns hot and eats 10% of charge in minutes. If I have less than 10% charge, it kills itself even if on external power. ...
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1answer
31 views

Samsung phone charges poorly, periodically

My Samsung S8+ has started having periods when it does not keep up 100% charging when connected and in simple editing usage. If I leave it idle it charges slowly and the "charger beep" occasionally ...
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1answer
114 views

Stop Android from killing Runtastic

Runtastic is an app for tracking the paths you ran, how fast you were, etc. It worked great for me for many years but almost 2 years ago started crashing on virtually any run. A few months ago, I ...
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19 views

Restart charge from powerbank on rootet phone

A have rooted android 4.3 device and charge it from power bank. Charging stop after 100% and not continue after phone discharged until i unplug and plug again usb connector or push butoon on powerbank....
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79 views

moto G3 turning on automatically when power is plugged in

I am not able to turn on moto G3 as it tries to automatically turn ON when plugged in, eventually remaining at 0%. It's a 3 year old phone and it turn off abruptly sometimes maybe battery issue. But ...
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11 views

Can the power supply to a phone component be shut off?

Whether it is via an already known software or a possible developer command, is it possible to shut off the power supply to a part of an Android device, for example to the camera to prevent spyware ...
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1answer
71 views

how to block an un-managed popup?

Android 6.0.1 [jump to the update] Something on my smartphone sends a message once a day, sometimes I see a tiny fast dark background popup on the bottom saying it is doing so. Such application ...
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14 views

Nook HD+ Not Working :(

I have a Nook HD+ and I already know that the battery is old, it does not hold a charge. But when ever I go to plug it in the NOOK on a block screen comes up and dims as usual. But after a few seconds ...
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30 views

WI-FI on Battery Usage Graph

Searched around but didn't seem to find this specific issue in the forums. My android marshmallow phone sometimes disconnect from wifi when screen is off and come back when screen is on despite the "...
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44 views

Xperia E5 overheating and losing charge very rapidly

I've had an Xperia E5 for around 1 and a half years now. I had no problems with the phone whatsoever, it held charge for around 3 days under my usage but suddenly, four days ago it just became really, ...
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1answer
45 views

How long will battery last, assuming no usage

Short question: How do I find how long my battery will last, taking into account the current settings (Airplane mode, Battery saver, etc) I have enabled, and assuming I do not use it? Detailed ...
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18 views

Can I safely power on my Moto G2 LTE without the camera hw module?

I have recently dropped my phone and the flashlight and camera suddenly stopped to work. I suppose this is an hw failure, so I have ordered a new module. Meanwhile I noticed a huge battery drain (-25%)...
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191 views

how to solve an S7 battery drain, possibly the OS itself after latest AT&T update

After an AT&T update, my Samsung Galaxy S7 Active battery rapidly drains while using the device. Even on the charger the battery level goes down, just not as fast as when not on the charger. The ...
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1answer
62 views

Does the average cellphone battery protect against overcharging or deep discharging?

It's known that Lithium Ion batteries are damaged by overcharging or deep discharging. While I've seen an Xposed module which prevents the phone from charging the battery above 90%, I'm wondering if ...
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1answer
1k views

Wileyfox Swift won't turn on

My WileyFox Swift phone's battery somehow emptied itself overnight and now the phone won't turn on at all. Battery is 68% full. When I plug the charger cable in/out the phone vibrates and the ...
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3answers
2k views

How to limit charging to 60%

My UleFone Armor 2 has 4700 mAh, but I would like to limit it to 60% to delay away the moment where the battery dies. How can I limit the charging to 60%? Lenovo ThinkPads have a built-in feature ...
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0answers
19 views

Kindle fire no longer keeps a charge?

So ... I have a kindle fire 7 (2017) and it is about 3 months old. However, for about a week I have noticed something odd. When I plug it in to charge it either doesn't register the charge or will ...
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11 views

older Motorola cell phone quit working, battery is not removable

After being on charge overnight, as usually do, my old Motorola will not turn on/come back up. Reset (hold on/off & volume down simultaneously) does not work. Is there a way to tell if this ...
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0answers
20 views

Samsung S4 Android 4.4 Freezing

I have an Android S4 where is the OS is constantly crashing and I have to reinstall it. The crash usually occurs after a few days when I update apps or install new ones. I'm wondering if the battery ...
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0answers
46 views

Kfhd7 battery indicator stuck at 0% but battery still fully charges and works

So this is a problem that I have never faced before. I recently installed a custom rom and kernel for the kfhd7. Everything seemed fine for a fews days until one day, the battery was at 0%. The kindle ...
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41 views

What is the impact of (slow) wireless charging vs (slow) wired charging on the phone battery?

Can someone give me some feedback related to BATTERY LIFE in terms of wired vs wireless charging? I already know that fast charging CAN reduce battery life. Do we have any info on wireless charging? ...
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505 views

Battery drains very rapidly on my phone (Oppo F1). What could be the reason? (Please read details before answering)

There are no apps running in the background (I recently factory reset it, no third party apps have been installed except one or two; and I am sure they are not the ones draining battery) and I have ...
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0answers
36 views

Which process is locking the camera?

There is a problem with my UleFone Armor 2 with Android 7.0 Nougat: After using the camera some times, it stops working due to the inability to connect to the camera. I tried killing the camera ...
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0answers
227 views

Understanding Excessive Battery Drain on Note 8 (Nougat 7.1.1)

I'm suffering from excessive battery drains on Note 8, Nougat 7.1.1. The battery drain is excessive when on idle mode/when the phone is asleep. I have installed BetterBatteryStats (gave it all ...
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1answer
671 views

What resets the battery stats

I'm looking at the "Battery" section under "Settings", and there's two major sections: a graph that shows how full the battery has been over some period Which apps have used the most battery power ...
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70 views

LG G4 battery is charged but phone shows 0% when plugged in and won't turn on

Good day. So, some days ago my phone was plugged in and I accidentally got it wet while it was plugged in. I quickly turn it off. Took it apart (removed screen and phone housing) so it could dry ...
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1answer
201 views

Wifi using power even if it off

I am using Lenovo P2 having Android 7.0. It having 5100 mah battery. In the battery usage I noticed that the wifi using power even if it turns off. I did a factory reset. But still have the same ...
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82 views

What type of battery does a Moto E 3rd generation use?

I've seen it claimed that it's a 2750 mAH one which I thought was unlikely, as from E4 to G5 they've kept the GK40 2800 mAH one, but why would they break interoperability for a measly 50 mAH? Then I ...
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1answer
17 views

Moto G4 Play Churning Through Batteries

I have a G4 Play which I used the @#(* out of for nearly a year, until I dropped it into the toilet for 2 or 3 seconds before getting it out. The battery and SIM fell out and I put it in rice for the ...
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0answers
138 views

Shell: get battery voltage_now if power were not connected

I am trying to make my device stop charging (echo 0 > /sys/class/power_supply/battery/charging_enabled, the easy part) when the battery's voltage reaches 3920000 µV. Using cat /sys/class/...
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0answers
14 views

Enforce power saving mode for powerbank charge

If I charge my phone from wall, disabling power saving is no problem. But for a portable powerbank, I would still like power saving enabled. How can I enforce Android to keep power saving on during ...
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1answer
67 views

Change battery percentage at which phone turns off

I'm trying to completely discharge an LG G2 D800 with Android 4.1; however, the phone always shuts down at 2%, so it's impossible for me to go down until the absolute zero. How could I change this ...
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2answers
2k views

How to tame “Phone Idle” battery drain on unrooted device?

I use AccuBattery and Kaspersky Battery Life to measure energy consumption. Kaspersky Battery Life shows, that all the tasks use minimal energy. AccuBattery Pro shows, that phone uses 5-10 mAh. This ...
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2answers
65 views

Significant battery drop/reboot, but only in cold weather (+5°C/+41°F) with camera - expected behaviour or battery defect?

Disclaimer: This is not a duplicate, I've looked at these questions but none are applicable(temperature) or provide an adequate answer. Recently I've realized that my 15 month old LG G4 seems to ...
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1answer
34 views

Improving horrible screen-on battery life

My HTC 10 is doing horribly when it comes to screen-on battery life after its update to Android 8.0. Average screen-on battery time is 1 hour and 15 minutes. I've tried most I could: turning off ...
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0answers
76 views

Why “System Update” app of “android 6.0” is draining battery

I am using Yu Yunicorn (5530) android phone. It has android marshmallow update. Recently I noticed when I put the phone on charging it takes long time to charge and never goes to 100%, also during the ...
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1answer
376 views

Replacing a new capacity battery and re-calibration

I am using redmi 2 for about 3 year and it's battery is dead. It was using 2200 mAH battery. So I went to local vendor and bought a copy battery with the rating of 2000 mAH. Now the new battery ...
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0answers
37 views

Android Battery system

Sony Xperia Li Polymer battery In flex cable, i see 4 pin ( EB+, ID,TH,EB-) What does stand for? How does it work?