/sys/class/power_supply/ACAD: POWER_SUPPLY_NAME=ACAD 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-ion POWER_SUPPLY_CYCLE_COUNT=0 POWER_SUPPLY_VOLTAGE_MIN_DESIGN=10800000 POWER_SUPPLY_VOLTAGE_NOW=0 POWER_SUPPLY_CHARGE_FULL_DESIGN=4400000 POWER_SUPPLY_CHARGE_NOW=0 POWER_SUPPLY_CAPACITY=0 POWER_SUPPLY_CAPACITY_LEVEL=Normal POWER_SUPPLY_MODEL_NAME=Primary POWER_SUPPLY_MANUFACTURER=Hewlett-Packard POWER_SUPPLY_SERIAL_NUMBER=...