[stijn@hermes ~]$ cat /proc/acpi/battery/BAT1/info 
present:                 yes
design capacity:         62640 mWh
last full capacity:      62640 mWh
battery technology:      non-rechargeable
design voltage:          10800 mV
design capacity warning: 0 mWh
design capacity low:     120 mWh
capacity granularity 1:  0 mWh
capacity granularity 2:  10 mWh
model number:            
serial number:           
battery type:            LION
OEM info:                Sony Corp.