Questions tagged [charging]

For questions specifically about issues with battery charging or power supply.

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Is it sensible to turn off the phone for charging?

I know that electronic devices, when not in use for a few hours and especially when charging, should be turned off. However, when I turn my phone off and plug it into the charger, it shows the "...
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14 views

When charging a Google Pixel 6 with a USB-C to USB-C cable, how is the charging speed determined?

The charging speed is between 0 to approximately 3750 mA, eg: I know that for example the temperature matters, but I'd like to know more exactly how the charging speed is determined.
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11 views

How to force PD rather than proprietary USB-C charging?

My brand new S21 5G and my S10e don't work properly with Anker chargers. This is partially Anker's fault and partially Samsung's. Firstly Anker chargers such as the Nano II range use PowerIQ3 use ...
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1 vote
1 answer
26 views

Start/Stop Music playing when power is supplied via the USB cable

I'd like to use an old(er) Android phone as a Music Player left always connected in my car. I have an ignition controlled USB socket in the car, and would also connect the 3.5mm jack to the Aux In of ...
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59 views

How to change charging animation used when device is turned off?

As the title says, way too less information online. I would also like to know some sources/websites where i can get other devices charging animation. I have 3 devices and help for any or all of them ...
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29 views

how to stop Mobile shutting down on apps using as Battery dropping from 70% to 0% in Android 6.0.1

Question:- how to stop Mobile shutting down on apps using as Battery dropping from 70% to 0% in Android 6.0.1. I have formatted my External micro sd card as internal and automatically while ...
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30 views

How to completely discharge a mobile device?

In case of laptops we should remove battery, then turn it off and hold power button for 15 seconds to completely discharge the motherboard. Whats the procedure in case of a smartphone or a tablet with ...
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white battery/does not turn on/does not charge

I was using a Xiaomi RedMi 9T (lime), nothing unusual. I left the wifi all over the night and the next time checked, MIUI was updated from 10 to 11. But turned off and its looping at the redmi screen,...
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20 views

Keep screen-off when i remove charger from android phone

I want to prevent the screen from turning on when removing the charger. thanks.
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1 vote
0 answers
50 views

What could explain that a USB cable starts charging my Samsung Galaxy S9 phone after ~2 secs, but takes over 5 min to start charging my Pixel 6 phone?

I have a male-to-male, USB-A-to-USB-C cable. It starts charging my Samsung Galaxy S9 phone after ~2 secs, but takes over 5 min to start charging my Pixel 6 phone. What could explain that? I have no ...
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0 votes
1 answer
35 views

How can I see how much electricity a device connected via USB is drawing from my phone?

I have connected a device to my phone via an USB cable so that it receives some electricity from the phone. How can I see how much electricity a device connected via USB is drawing from my phone? I ...
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82 views

USB OTG only working on charging mode

I have an android tablet that came with OTG support and adb binary already installed, I would like to connect my phone to use adb but when I connect it only charges the phone and adb does not show my ...
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18 votes
1 answer
2k views

When connecting two Android phones via a cable, how can I choose which phone is charging which phone?

When connecting two Android phones via a cable, how can I choose which phone is charging which phone? E.g. when I connected a Samsung Galaxy S9 (Android 10) with a Google Pixel 6 (Android 12) via a ...
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4 votes
1 answer
93 views

Is possible to charge the battery even If I erase boot and system partitions?

Is it possible? Or the device needs at least a kernel to be able to charge? I have a device in bootloop that every 3 seconds it vibrates and I'm not sure if its does not charge because I erased boot ...
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32 views

Android device turns off while there is enough battery but won't turn off in recovery mode

My android device (SM J510F - Android 7.1.1) shows 30% for battery but turns itself off. When I turn it on it will turn off even while it is booting to system. If I plug the charger it wont turn off ...
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0 answers
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recommendation for charging plan [duplicate]

Using Termux on an Android smartphone and a WiFi Smart Plug the phone can control its charging via half hour cron'ed termux-battery-status, MQTT and openHAB to control the plug. Termux hasn't battery ...
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41 views

Show battery at 100% when it is charged to lower value?

On the Samsung Galaxy Tab S7, you can limit your battery to 85% and have it show 100% when it is at 85%. Can I somehow replicate this behaviour on my OnePlus 6 running on LineageOS 18.1 with root? I ...
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35 views

Keeping phone plugged in vs. using a charger control?

I have an old, quite banged-up Huawei Y6II. I want to use it as a static device and turn it into a security camera, web server, wifi hotspot, etc. Is it okay to keep it plugged in all the time? Or ...
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1 vote
0 answers
39 views

How to cure Battery draining and lagging problem

Question How to cure Battery draining and lagging problem I have lyf water 7 ls-5504 mobile it's been rooted through super user to use link2sd and link apps. But before rooting it's have huge proble ...
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35 views

Phone charging symbol but not gaining charge

I have a OnePlus 7 Pro running Resurrection Remix. Sometimes when using a type c to type c cable, the device will show the charging icon but won't gain any charge (it doesn't lose charge either) until ...
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-1 votes
1 answer
17 views

My nook HD won't charge

Unlike similar posts about this issue, the light doesn't from green to red to nothing when I plug it in, but rather, it just goes to green for a few seconds, and then nothing. I hadn't used it in a ...
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0 answers
29 views

Alcatel 1x only turns on when screen ribbon is detatched

My phone, an Alcatel 1x, has been giving issues with the battery lately (it drains very fast and I can't use it without the charger). But the real trouble is that since morning I've been trying to ...
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27 views

My LG Stylo 5 Has not been charging for 3 days. I've used multiple chargers and it still hasn't charged. I don't understand what the problem is

I just need to know why my phone isn't charging and if I need to buy a new one or not.
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121 views

Charging control in Android without using any third-party apps

Is there any way to control charging in Android programatically without using any third party Apps? We have an Android Application which has to be installed at Client Location in Tab and the tab has ...
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0 votes
0 answers
126 views

screen turns on and off while charging

I bought a new OnePlus 9 Pro last week and noticed that when I use a non-original charger the screen keeps turning on and off every few seconds while the phone makes the sound it makes when I connect ...
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1 vote
0 answers
27 views

Battery level to output via Bluetooth for external control

Is there any device to read the phones battery level ; lets say 10 % to 90% to trigger a signal out over blue tooth; some apps haves control; like sonoff; for wifi control but I want to trigger ...
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1 vote
1 answer
3k views

How to prevent charging over USB while debugging / tethering internet over USB?

When I'm on the go, I want to use internet tethering and debugging over USB to develop mobile apps with my Pixel 3A, but I don't want to charge the phone, because I want to waste energy on my MacBook ...
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0 votes
0 answers
39 views

What happens to a Li-Pol battery L13D1P31 if it is left on a permanent charge?

I have an old tablet (Lenovo Tab 2 A7-30 and a L13D1P31 battery) that I want to use as a permanent display of some data like a weather forecast. I would like to leave this tablet plugged in ...
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  • 111
1 vote
1 answer
315 views

How to write to an Android system file?

Why is writing to /sys/class/power_supply/battery/status having no effect? Accessed manually via adb shell as root, eg echo "Discharging" > /sys/class/power_supply/battery/status does not ...
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  • 113
1 vote
1 answer
54 views

Battery for Samsung Galaxy S8

I am looking to replace the battery in my samsung galaxy s8. Amazon shows many available batteries, ranging in capacity from 3000mAh to 4350mAh, all about $20 or less. The one and only authorized ...
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  • 155
1 vote
1 answer
101 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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2 votes
0 answers
39 views

Galaxy Note 3 blacks out on rebooting at lock screen

I'm having trouble rebooting Samsung Galaxy Note 3, where it starts rebooting after holding lock button, but blacks out when/before it reaches lock screen. After blacking out (or before rebooting) it ...
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  • 121
0 votes
1 answer
21 views

How to stop screen from coming on with intermittent charging

I know we have this very old question and answers How to keep screen turned off when plugging charger? but why isn't this implemented by Android? My scenario is that I use my phone for navigation on ...
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  • 101
2 votes
1 answer
80 views

How to disable battery saving when battery level is below 15%?

I used an old tablet to operate a smart home. In order to work continuously, I took the battery out of it and connected it to a 4V power source, which works continuously. Based on the measured battery ...
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1 vote
0 answers
64 views

Recovering bricked Pixel 2 with drained battery

Bit of a weird setup but I have a Pixel 2 phone with offline charging disabled. Today I wanted to restore the factory image so I booted the phone into TWRP, wiped all the partitions. I then got ...
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1 vote
1 answer
45 views

Is a specific charger needed to utilize 25W charging?

I have a Samsung Galaxy S10 5G. Is it important for the charger and cable to have certain specifications to utilize the 25W charging capability?
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1 vote
0 answers
44 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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  • 141
2 votes
1 answer
52 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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2 votes
0 answers
28 views

Galaxy tab charging dock stops charging when USB device is attached

I recently bought this charging dock by Brodit for my Samsung Galaxy Active 2 (v. 3.9.0) with Android 9: https://www.amazon.de/gp/product/B00UASMT2Y/. I was hoping to constantly keep the tablet ...
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2 votes
1 answer
84 views

Samsung Galaxy Tab 3 (SM-T210R) won't turn on or charge

I have a Samsung Galaxy Tab 3 and for years it worked very well until last year, out of a sudden, it stopped working. It didn't want to charge or turn on. When I plugged it to my PC, the PC wouldn't ...
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0 answers
42 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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1 vote
0 answers
61 views

How can I charge Motorola One normally?

tl;dr: Every setup that I tried so far ends up with "Charging rapidly" or "Charging slowly" on my Motorola One. What kind of charger (or power source) and cable should I use in ...
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3 votes
2 answers
1k views

Phone won't stay off when charging Motorola Edge Plus on Android 10 and above

After getting a replacement phone from Verizon, the new Motorola Edge Plus will not stay powered off while charging, as the last one did. After looking on the forums, I enabled developer options, but &...
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1 vote
0 answers
32 views

Plug Android smartpone into PC without loading | LineageOS

I am using my main smartphone for developing Android apps and doing research. I set everything up and searched for a specific option under USB Preferences, when connected to my computer. As I don't ...
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0 votes
0 answers
119 views

Reading battery level/voltage via USB port

I'm interested in creating a device that needs to externally monitor the battery level or voltage of the phone via the USB port. I haven't had much experience with the inner workings of Android, but I ...
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3 votes
1 answer
2k views

Does 'Battery Protection Mode' turn on automatically?

I'm the founder of a company that deploys Android tablets into a hospital Making sure our tablets are plugged in is really important to us. When devices get unplugged we alert hospital staff to plug ...
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2 votes
2 answers
306 views

Asus Zenfone cycling in the starting of charging process

I have an ASUS ZenFone Max Pro (X00T/X00TD) It is/was discharged and powered off. When i plug it in for charging, it is cycling in start of chaging: vibration the icon of empty battery The bootloader ...
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2 votes
1 answer
37 views

Why is fast charging unreliable?

I have a variety of fast charge plugs and cables as well as an Anker power bank and a Nitecore NB10000. They support up to 3A @ 5V, 2A @ 9V and 1.5A @ 12V (i.e. 15W-18W). I believe the S10e is limited ...
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1 vote
0 answers
137 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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  • 866
0 votes
1 answer
670 views

Phone temperature sensor not working - Charging slow - How to fix?

Recently, something has happened to my phone's temperature sensor. It's showing ridiculously high values for the temperature (over 100 degrees), even though it's very cold. This has caused my phone to ...
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