After using Pandora, I restored my battery to its normal status (with the square button in the pandora's menu, "restore battery to a normal one") and it worked correctly, I turned off my PSP and then on again and the battery worked normally, after then, I formatted the Memmory stick where the eeprom.bin file was and now, my PSP won't turn on with that battery, I have to plug it with the cord, then turn it on and then, put the battery (thats the only way it can stand turned on without the cord plugged). So, my question is: Is my battery condemned or I can still fix it? (I think it has the eeprom.bin file, because I restored the battery prior to format the memmory stick). Any Help, will be very appreciated. THANKS!!!