Battery Pack 3.6V 1200mAh model PSP-S110 - YouTube
Amazon.com: OSTENT High Capacity Quality Real 2200mAh 3.6V Lithium Ion Li-ion Polymer Rechargeable Battery Pack Replacement Upgraded Version for Sony PSP 1000 PSP-280 Console Video Games : Video Games
Amazon.com: OSTENT 1800mAh 3.6V Lithium Ion Li-ion Polymer Rechargeable Battery Pack Replacement for Sony PSP 1000 PSP-110 Console : Video Games