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PSP 3001 Slim Battery Pack 3.6v 1200mAh
If you own a PSP, you might want to uh, make sure your battery isn't expanding – Destructoid
Replacement Sony PSP-2000, PSP-3000 PSP Battery (Slim) (3.6V, 1.0Ah, Li-Ion) | Battery Mart
Sony PSP Large Capacity External Battery Pack with Cliphook. Extra 3800 mAh capacity
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