also in console you can install acpitools and write acpitool -B
it will give you the information you want and more
this is a example of what acpitool can give
[john@netT6 ~]$ acpitool -B
Battery #1 : present
Remaining capacity : 1230 mAh, 63.80%, 01:28:42
Design capacity : 2250 mAh
Last full capacity : 1928 mAh, 85.69% of design capacity
Capacity loss : 14.31%
Present rate : 832 mA
Charging state : discharging
Battery type : rechargeable
Model number : 3780 mAh
Serial number : PA3731U-1BRS
it tells me that my battery already lost 15% of the maximum capacity