cat /proc/acpi/battery/BAT0/info

present:                 yes
design capacity:         4000 mAh
last full capacity:      3880 mAh
battery technology:      rechargeable
design voltage:          11100 mV
design capacity warning: 190 mAh
design capacity low:     133 mAh
capacity granularity 1:  57 mAh
capacity granularity 2:  3690 mAh
model number:            GRAPE32
serial number:           15636
battery type:            LION
OEM info:                SANYO