$ cat /sys/class/power_supply/BAT0/uevent
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=11196000
POWER_SUPPLY_VOLTAGE_NOW=12456000
POWER_SUPPLY_CURRENT_NOW=1000
POWER_SUPPLY_CHARGE_FULL_DESIGN=5212000
POWER_SUPPLY_CHARGE_FULL=4176000
POWER_SUPPLY_CHARGE_NOW=5200000
POWER_SUPPLY_MODEL_NAME=DELL TXWRR15
POWER_SUPPLY_MANUFACTURER=SMP
POWER_SUPPLY_SERIAL_NUMBER= 2495