Ok so last night I used the psp slim's battery to make pandora, and I got custom firmware installed etc etc. So today, I went to future shop and purchased a brand new 3.6 2200 battery pack. When I put it in the, it does nothing, it wont power on. I go into the system settings with psp plugged into wall and it says there is no battery in. Can someone tell me if I'm doing something wrong?