OSTENT High Quality Real Capacity 1800mAh 2200mah 3.6V Lithium Ion Rechargeable Battery Replacement for Sony
If you own a PSP, you might want to uh, make sure your battery isn't expanding – Destructoid
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Sony PSP Slim Battery Replacement
Kastar 4-Pack PSP-110 Battery Replacement for Sony PSP-110 PSP110 Battery, Sony PSP-1003, PSP-1004, PSP-1005, PSP-1006, PSP-1007, PSP-1008, PSP-1010, PSP Fat Video Game PSP Playstation - Walmart.com
Sony PSP Go Battery: Replacement Part #LIP1412
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