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The 2024 Developer Survey results are live! See the results
33 votes
Accepted

Don't charge the battery but use connected power to run the phone

Yes, it's possible if your device is rooted running Advanced Charging Controller-Acc Magisk module and device kernel supports (see currently known list at the end of answer. For more join telegram ) ...
beeshyams's user avatar
  • 41.1k
25 votes

How to limit charging to a user defined limit?

There now is a hardware+app solution for that, it's called Chargie. https://chargie.org Basically, Chargie is a Bluetooth switch that is linked to an app on your phone. You set the desired level of ...
Ovidiu Sandru's user avatar
21 votes
Accepted

Ideal charging / discharging percentage for maximum battery life?

In the comments to linked answer, it was brought out that batteries are not allowed to stay at 100% charge since it is harmful to the battery and the battery % rapidly drops to around 90% as explained ...
beeshyams's user avatar
  • 41.1k
16 votes
Accepted

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

Under USB preferences, whichever device has Charge connected device as enabled is charging the other device. Snapshot from Pixel 4a (Android 12) connected to and charging One Plus 7 (Android 10) And ...
beeshyams's user avatar
  • 41.1k
14 votes

Automatically power on Android when the charger is connected

fastboot oem off-mode-charge 0 is the genuine method if your device supports. It's Google's recommended method but not all OEMs/vendors implement the command in bootloader. Or on some devices it's ...
Irfan Latif's user avatar
  • 20.9k
14 votes

How to limit charging to a user defined limit?

Many ways - all of course, need root. Without root, it's not possible and you can only be notified either by automation or using an app as suggested in Chang's answer Battery Charge Limit from Play ...
beeshyams's user avatar
  • 41.1k
13 votes
Accepted

Automatically limit (stop) battery charging at a given percentage

Okay.. Got it :) The first thing to note is on Honor 6, my previous device , there was a single file I could play around with to stop charging automatically On Moto X play, there are two distinct ...
beeshyams's user avatar
  • 41.1k
12 votes

Is it bad if a cable is higher current rating than a charger?

No, only the device should not draw more current than the adapter and the cable can handle. So the device defines how much current will flow through the circuit (which consists of your adapter and ...
Michel Keijzers's user avatar
9 votes

How to limit charging to a user defined limit?

Accu​Battery can notify you when the battery charge reaches a certain level. It won't stop the charging, unfortunately, but it's still worth a try. :)
geffchang's user avatar
  • 17.7k
7 votes

Are 'Apple/Android Specific' USB charging ports really different?

There are two USB charging standards; the official one and the Apple one. You can get a copy of the offical one from usb.org. How charging works depends on whether you are connected to a computer, USB ...
Alistair Adams's user avatar
7 votes

Prevent display to sleep while charging

there is a setting in developer options on your phone that allows you to keep your display awake whilst charging it. It is enabled by going to settings, then scrolling all the way down to about. From ...
Devin Ersoy's user avatar
7 votes
Accepted

Using Android phone without battery

AFAIK, no. The fundamental reason is usage and the design that evolved based on it- mobile phone, as the name suggests, is meant to be used whenever and wherever, with periodic charging, unlike ...
beeshyams's user avatar
  • 41.1k
7 votes

Plugging phone into laptop charges laptop instead of phone

This is called PD charging. There should be a setting in connection dialog. Also there should be the same options in Developer Settings
alecxs's user avatar
  • 4,099
6 votes
Accepted

simultaneous USB-OTG and charging

There are two different questions here Fails: tablet - Samsung adapter - extension-cable - OTG-device..... (But) it works when inserted between a thumbdrive and a PC Android devices support USB ...
beeshyams's user avatar
  • 41.1k
6 votes

Automatically limit (stop) battery charging at a given percentage

Now there's Chargie - a USB stick+Android app combo that limits charging externally. Just install the stick between the charger and phone and use the app to select the charge level. Simple as that. ...
Ovidiu Sandru's user avatar
6 votes

How to limit charging to a user defined limit?

My solution is to just use a CountDowntimer on the power outlet, set at 1:20 for me. One hit on the CD button to start the power (ON), and after 1:20 it's OFF again which will be at about 80% charge. ...
Thomas Carl-Erik Jönsson's user avatar
5 votes

Automatically power on Android when the charger is connected

So, there are many ways to do so. The most proper one, as always supported by Google (and more and more by others, e.g. nvidia from nougat) is this fastboot command fastboot oem off-mode-charge 0 ...
mirh's user avatar
  • 367
5 votes

Ideal charging / discharging percentage for maximum battery life?

A good metric of battery life is the total energy it provides during its lifetime, which is number of charge cycles*capacity at full charge. If your phone uses X Joules a year and the battery is able ...
Dmitry Grigoryev's user avatar
5 votes
Accepted

Is there a way to switch to charging only before plugging my phone into an USB?

Enable developer options - To enable Developer Options, go to Settings and select About phone. Now, scroll down and find out Build number. Tap on this option around 7 times. You will get a success ...
beeshyams's user avatar
  • 41.1k
5 votes

Using Android phone without battery

My Infinix Hot 4 battery exploded and was left without one at home. I did this by drawing a circuit with a pencil on the motherboard from the GND pin to -ve pin. This tricked the phone that it has a ...
user231043's user avatar
5 votes
Accepted

How to select a Non OEM USB Type C charger or cable for my device?

USB C Chargers/ Cables are a minefield - In implementation The standards (as they should) are said to clear and consistent but implementation has been shoddy causing multiple problems and even ...
beeshyams's user avatar
  • 41.1k
5 votes

Can s7 Wall charger be used on s8?

Samsung says ....You can charge your phone using any Samsung-approved wall charger, but charging speeds may vary depending on the charger.... Further this reddit claims that S7 and S8 use the ...
beeshyams's user avatar
  • 41.1k
5 votes

Does 'Battery Protection Mode' turn on automatically?

I got a response from our support contact at Esper. This is apparently a Lenovo feature. Lenovo "Battery Protection Mode" will be automatically enabled if the device is continually charging ...
Kevin Davis's user avatar
5 votes
Accepted

USB C hub and charging at the same time

It seams that my issue was One Plus's Oxygen OS didn't support this feature. I installed a few kernels hoping that one would fix it and it did. The kernel is called Dora based on nem0.
Catfoxes's user avatar
  • 166
4 votes

Disable USB charging

adb shell dumpsys battery set ac 0; dumpsys battery set usb 0;
Nir Duan's user avatar
  • 171
4 votes

Micro USB cables that only charge but no data, no mounting etc (Samsung Galaxy S)

Sorry to disagree with the other answers, but those assumptions are simply wrong: To be compliant with Battery Charging Spec. or any other comparable charging mechanism, the data lines require ...
Jürgen Wissenwasser's user avatar
4 votes

Using an OTG cable while charging

It's possible, some phones support Battery Charging Specification 1.2 and can utilize USB ACA (Accessory charging adaptor) which support OTG + Charging at the same time. (the Acasis H027 is one such ...
Tal Aloni's user avatar
  • 151
4 votes

LG phone seemingly stuck on "Firmware Update"

Once when I plugged the LG phone to give it a full charge, it did this firmware update stuck on 0% thing. I fixed it by just holding the power button on the right and the volume up button on the left ...
Chris's user avatar
  • 41
4 votes
Accepted

what happens if you plug a non QC 2.0 device into a QC 2.0 charger?

From Qualcomm FAQ : .... Quick Charge is compatible and interoperable, a certified adapter can be used with a non-Quick Charge device, though the fast charging benefits of Quick Charge will not be ...
beeshyams's user avatar
  • 41.1k
4 votes
Accepted

Is the fast charge safe for long-term usage with Li-Poly battery?

A lot of sources on the Internet claim that fast charging immensely reduces your battery capacity over time. But you have to be careful interpreting them. For instance, take this figure: As you can ...
Forivin's user avatar
  • 237

Only top scored, non community-wiki answers of a minimum length are eligible