Picked up this chonkers of a PSP 1000 setup: X2 3600mAh battery with its own battery cover. Battery estimates are all over the place. Haven't tested battery life. : r/PSP
Battery Cover for PSP 1000 | Hand Held Legend
12pcs Black White Extended Extra High Battery Back Cover Case For Sony Psp 3000 2000 Battery Door - Cases - AliExpress
Replacement Battery & Silver Battery Cover For Sony PSP 3000 3001 2000 Slim – ASA College: Florida
New PSP 2000 / 3000 Battery Cover - Extended Glossy Black
Amazon.com: Replaceme Battery Back Door Cover Case for Sony PSP 1000 1001 1002 1003 Fat Black : Video Games
God of War Red PSP 3000 Rear Casing Shell Housing Case + Battery Cover | eBay