I'm looking for an official PSP battery that will work with Pandora. I bought a few off of ebay and none of them seem to work. 1 is a 2200 and others 3600 but the 1800's dont work either. If anyone wanted to trade there battery for any of these as the 3600 is the X2 official and the 2200's official Sony also please reply!! The 1800 are obviously fake or the brand new Pandora Proof Sony batteries.