I need to get a new battery for an 867mhz Rev. A 12" PowerBook. Specs I found this battery on eBay and wanted to know if it was right and what I should be looking for or looking out for - pitfalls in getting a battery. Any help would be great. The current battery only holds a five minute charge (been that way at least a year) and I want to give my wife's old laptop to either my mom or her dad. It will be used mostly plugged in with an iSight and USB HDD attached which will probably kill a new battery again. This is not the original battery as it was replaced under 3yr Applecare but at 5 yrs old this machine has spent most of its life plugged in all the time, so I don't think there is anything wrong with it, just worn out batteries now twice in life cycle.