sermuns/check_android_battery_health_with_adb.md

Last active December 2, 2025 18:47

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Check Android battery health with ADB

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check_android_battery_health_with_adb.md

On the device, enable USB debugging (in developer options).
Connect device to computer via USB.
Run the following on computer:

adb shell awk '"BEGIN{print $(cat /sys/class/power_supply/battery/charge_full) / $(cat /sys/class/power_supply/battery/charge_full_design)}"'

The number printed is the quotient between the reported current max charge and designed max charge.

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