mumia:/home/anarcat# cat /proc/acpi/battery/BAT0/*
alarm:                   2376 mWh
present:                 yes
design capacity:         47520 mWh
last full capacity:      15880 mWh
battery technology:      rechargeable
design voltage:          10800 mV
design capacity warning: 2376 mWh
design capacity low:     475 mWh
capacity granularity 1:  1 mWh
capacity granularity 2:  1 mWh
model number:            IBM-08K8040
serial number:            2130
battery type:            LION
OEM info:                SANYO
present:                 yes
capacity state:          critical
charging state:          discharging
present rate:            20183 mW
remaining capacity:      0 mWh
present voltage:         10199 mV