/sys/class/power_supply/AC: POWER_SUPPLY_NAME=AC POWER_SUPPLY_ONLINE=1 /sys/class/power_supply/BAT0: POWER_SUPPLY_NAME=BAT0 POWER_SUPPLY_STATUS=Unknown POWER_SUPPLY_PRESENT=1 POWER_SUPPLY_TECHNOLOGY=Li-poly POWER_SUPPLY_CYCLE_COUNT=20 POWER_SUPPLY_VOLTAGE_MIN_DESIGN=15360000 POWER_SUPPLY_VOLTAGE_NOW=16600000 POWER_SUPPLY_POWER_NOW=0 POWER_SUPPLY_ENERGY_FULL_DESIGN=80400000 POWER_SUPPLY_ENERGY_FULL=76270000 POWER_SUPPLY_ENERGY_NOW=64470000 POWER_SUPPLY_CAPACITY=84 POWER_SUPPLY_CAPACITY_LEVEL=Normal POWER_SUPPLY_MODEL_NAME=01AY969 POWER_SUPPLY_MANUFACTURER=Celxpert POWER_SUPPLY_SERIAL_NUMBER=... /sys/class/power_supply/hid-0003:17EF:60EE.0002-battery: POWER_SUPPLY_NAME=hid-0003:17EF:60EE.0002-battery POWER_SUPPLY_PRESENT=1 POWER_SUPPLY_ONLINE=1 POWER_SUPPLY_MODEL_NAME=Lenovo TrackPoint Keyboard II POWER_SUPPLY_SCOPE=Device /sys/class/power_supply/wacom_battery_0: POWER_SUPPLY_NAME=wacom_battery_0 POWER_SUPPLY_MODEL_NAME=Wacom Pen and multitouch sensor POWER_SUPPLY_PRESENT=0 POWER_SUPPLY_STATUS=Unknown POWER_SUPPLY_SCOPE=Device POWER_SUPPLY_CAPACITY=0