Replacement Li-Ion 1200mAh Rechargeable Battery Pack for Sony Slim Portable Playstation PSP-2000 Output Volts: 3.7V, AmpHours: 1200 mAh New 100% Compatible 1200mAh Li-Ion Rechargeable Battery Pack for Sony PSP Keep your PSP running with a spare battery pack! This pack is easy to install and easy to use. Keep on gaming without worries. Not compatible with the old model PSP-1000.