/sys/class/power_supply/AC: POWER_SUPPLY_NAME=AC POWER_SUPPLY_TYPE=Mains POWER_SUPPLY_ONLINE=1 /sys/class/power_supply/hid-0003:04F3:2361.0001-battery: POWER_SUPPLY_NAME=hid-0003:04F3:2361.0001-battery POWER_SUPPLY_TYPE=Battery POWER_SUPPLY_PRESENT=1 POWER_SUPPLY_ONLINE=1 POWER_SUPPLY_CAPACITY=0 POWER_SUPPLY_MODEL_NAME=ELAN Touchscreen POWER_SUPPLY_STATUS=Unknown POWER_SUPPLY_SCOPE=Device