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
Amazon.com: Hisewen PSP 3000 Battery 2-Pack and Dual LED Charger for Sony PSP 3000 / PSP Slim 2000 PSP-S110 Console, PSP-2001, PSP-3000, PSP-3001, PSP-3002, PSP-3004, PSP Slim Console : Video Games
For PSP 2000 and 3000 Replacement Battery Pack Rechargeable New 1200mAh 3.6V High Capacity for Sony PSP 3000 and PSP Slim 2000, Include Model PSP-2001, PSP-3000, PSP-3001, PSP-3002, PSP-3004 by Insten | Michaels
High Quality BATTERY PACK FOR SONY PSP 3000 3001 3003 3004 lite PSP 2000 new | eBay
Sony Lite PSP 2th PSP-2000 PSP-3000 PSP-30 1800mAh Replacement Battery: BatteryClerk.com Game
Sony Playstation Psp S110 Battery | Sony Battery Model Psp S110 - 2400mah Psp-2000 - Aliexpress
for PSP 2000 | 3000 Series - EXTENDED Black Replacement Battery Cover – Fast-PC
PSP-3000 Battery Issue : r/PSP
Kastar 4-Pack PSP 110 Battery and LTD2 USB Charger Replacement for Sony PSP-2009, PSP-2010, PSP-3000, PSP-3001, PSP-3002, PSP-3003, PSP-3004, PSP-3005, PSP-3006, PSP-3007, PSP-3008, PSP-3009, PSP-3010 - Newegg.com
For PSP 2000 and 3000 Replacement Battery Pack Rechargeable New 1200mA - Insten
Sony PSP 3000 Battery Life Not As Touted | Ubergizmo
Sony PSP 2000/3000 Battery: Replacement Part #PSP-S110
Upgrade 3.6V 3600mAh Replacment Battery For Sony PSP 2000 2001 PSP 3000 3001 | eBay
Standard Battery for Sony PSP-2000 PSP-3000 PSP-3004 Slim PSP-S110 Lite PSP 2th - Newegg.com