Lenmar Replacement Battery for Sony PSP-1000 PSP-1000K Replaces OEM Sony PSP-110 PSP-280 Fits: Sony PSP-1000, PSP-1000K Replaces: Sony PSP-110, PSP-280 3.6V / 2200mAh Lithium Ion 1 Year Warranty Fits Sony PSP-1000 Fits Sony PSP-1000, PSP-2000 (Slim) (requires expanded backplate from Sony) Replaces PSP-110, PSP-280 3.6V 2000mAh Lithium Ion