/sys/class/power_supply/hid-e4:8b:7f:21:c1:49-battery: POWER_SUPPLY_NAME=hid-e4:8b:7f:21:c1:49-battery POWER_SUPPLY_TYPE=Battery POWER_SUPPLY_PRESENT=1 POWER_SUPPLY_ONLINE=1 POWER_SUPPLY_CAPACITY=100 POWER_SUPPLY_MODEL_NAME=Apple Wireless Keyboard POWER_SUPPLY_STATUS=Discharging POWER_SUPPLY_SCOPE=Device