Dug my PSP 1000 out of storage. Is this a swollen battery? : r/PSP
PSP 1001 Sony 3.6v 1800mAh Battery Pack
Bringing life back to my PSP Battery (PSP 2000/3000) - Battery Cell Replacement!!! - YouTube
If you own a PSP, you might want to uh, make sure your battery isn't expanding – Destructoid
Genuine Sony PSP Slim PSP-S110 Battery for PSP 2000 3000 – Resurgence Games
File:Psp-battery-types.jpg - Wikipedia
Best Buy: Sony PSP Battery Pack PSP-110
Amazon.com: OSTENT High Capacity Quality Real 1200mAh 3.6V Lithium Ion Li-ion Polymer Rechargeable Battery Pack Replacement for Sony PSP 2000/3000 PSP-S110 Console : Video Games
Sony Battery Charger for the PSP Slim - Sam's Club
Replacement 1800mAh PSP-110 PSP110 Battery for Sony PSP Fat Portable Playstation PSP-1000, PSP-1001 - Newegg.com