Because I am testing a lot of iPod batteries recently, I started keeping an old iPod V5.0 with an 8g CF card in a Tarkan free as a means to charge batteries. Everyday I charge batteries with this iPod, just in case I run into issues with complete battery discharge (which has happened very regularly since I started running stress testing on the 480g and the TeraPods). If not for this "battery charging ipod" I would not be able to run the tests I've conducted in the last two weeks. Remove the adapter from the computer only after shutdown. If you remove while the power is on, the chip will lock and cannot be restored in iTunes. I am really surprised the slim battery works. I think my next build will be a U2 Thin TeraPod - just because I can.