I recently bought a 12" Powerbook G4 from ebay, and am curious to know about the battery capacity. It came with the original Apple battery, and it usually powers off before the battery is at a low percentage power. So I have installed Coconut Battery and Battery Health Monitor to check how the battery is doing. Both say that the battery capacity is now 6393mAh, and the original capacity was 4200mAh. As such, they say the battery health is 100%. How is this possible? How can battery capacity increase? i presume this is wrong. Is there any way to correct this? The powerbook, according to the apps, is 65 months old (it is an original 867MHz model). Both battery apps also say the battery has gone through 59 charge cycles. Any suggestions/thoughts? Thanks.