Amazon.com: Tectra 3600mAh 3.6V Rechargeable Battery Compatible with Sony PSP 1000 PSP-110 Console PSP 1000 1001 1002 Series(NOT Compatible with PSP-2000 or 3000 or PSP Slim) : Video Games
Took a look at my psp 3000's battery, did the original owner upgrade it? Because I remember them being packaged in with a 1200 mAh battery. : r/PSP
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PSP Mega Power Battery Pack Comp. 3000/2000/1000 - Leonor Toy's & Collectibles
Amazon.com: Tectra 3600mAh 3.6V Rechargeable Battery Compatible with Sony PSP 1000 PSP-110 Console PSP 1000 1001 1002 Series(NOT Compatible with PSP-2000 or 3000 or PSP Slim) : Video Games
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Battery charger & 3600mAh Rechargeable Battery for PSP 2000/2001/2006/ 3000/3001 | eBay