1

I would like to know if is it possible to connect my smartphone to a pc via USB without charging it?

It would be very useful to be able to disable charging (but still allow USB tethering, ADB debugging, file transfer etc).

Thanks a lot.

2

You can try these solutions, which directly address what you are trying to achieve (may not work on all devices)

Adb shell echo 0 > /sys/class/power_supply/battery/charging_enabled (1 to disable; 0 to enable)

If these methods don't work or you want to explore more possibilities, see methods below, which can offer you clues

1

Yup, you should be able to use the adb command. Or use an app I just released to disable usb charging in Android phone. Has not been tested on Samsung j7 though.

https://play.google.com/store/apps/details?id=org.bramantya.stopcharging&hl=en

It needs root access.

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