LordLeXat had no money when his PSP battery broke, so he had to think of a easier way to power his PSP. The result was a hack which uses standard Nokia battery (BL-5C) pack, mixed with the original PSP battery controle board.
“The battery is lighter and has nearly 150% lifetime of the original 1800mAh PSP battery, and by the way, the text of the Nokia battery reads 1020mAh.”