You will see fake batteries would say that there is 2400 mAh and higher ( I saw a 3600 mAh battery, its truly fake.) ( Mostly fake batteries are made to 3600 mAh, saw in Amazon.) The fake battery cannot be somehow converted to be a pandora and autoboot. You will feel that fake is lighter than the real one. NOTE : MOST FAKE PSP BATTERIES ARE MADE IN CHINA. I have this problem before, I will tell you now ! There are fake and real batteries (again like memory sticks.) Here are some causes that your battery drains fast.