/sys/class/power_supply/hid-dc:2c:26:e0:ba:cd-battery: POWER_SUPPLY_NAME=hid-dc:2c:26:e0:ba:cd-battery POWER_SUPPLY_TYPE=Battery POWER_SUPPLY_PRESENT=1 POWER_SUPPLY_ONLINE=1 POWER_SUPPLY_CAPACITY=0 POWER_SUPPLY_MODEL_NAME=RK-Keyboard POWER_SUPPLY_STATUS=Discharging POWER_SUPPLY_SCOPE=Device