I feel kind of stupid posting this, but I would like advice on where to buy a new battery for a 12" iBook. It is a dual usb, so I could pick one up from the apple site but at $130 they seem somewhat pricey. I'm only posting this because the battery I have now is a 3rd party battery and isn't an exact match. The edges are not smooth, which is ok but the iBook shuts off when I pick it up or set it down sometimes (when it's running off of the battery). So...anyone know where to get a battery for an iBook that will work flawlessly?