olaf@laptop:/proc/acpi/battery$ cat BAT0/state 

present:                 yes

capacity state:          ok

charging state:          charged

present rate:            0 mW

remaining capacity:      53390 mWh

present voltage:         16738 mV

olaf@laptop:/proc/acpi/battery$ cat BAT2/state 

present:                 yes

capacity state:          ok

charging state:          discharging

present rate:            13803 mW

remaining capacity:      26810 mWh

present voltage:         16259 mV