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I have an external DAC with it's own source of power. However when I connect it to the phone, it drains the phones battery. Is it possible to disable charging via USB on a rooted phone? Or at least slow it down?

My phone is Samsung Galaxy S3, Android 6, CyanogenMod

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  • This should help android.stackexchange.com/a/133984/131553
    – beeshyams
    Commented Oct 15, 2016 at 14:42
  • Would it work the other way around? I mean it's a solution to charging from pc to mobile. I want to disable charging DAC(which is not using android) with my android phone.
    – user3086720
    Commented Oct 15, 2016 at 17:48
  • I am not sure- you can try and post it as an answer if it works
    – beeshyams
    Commented Oct 16, 2016 at 2:35
  • so far I have tried limiting USB charging through boeffla config app and it stoped charging from PC but still the phone is providing power through USB. Also I can't seem to be able to change "sys/class/power_supply/battery/charging_enabled" through terminal as a root even though the file is set to be writable
    – user3086720
    Commented Oct 16, 2016 at 6:29
  • Could be that the file location is different
    – beeshyams
    Commented Oct 16, 2016 at 8:16

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