How to fix PSP 3000 won't power on and charge - YouTube
PSP E-1000 Review • Eurogamer.net
How to Charge Your PSP: 13 Steps (with Pictures) - wikiHow
Psp go wont turn on? - PSP Go - iFixit
PSP 3000 Troubleshooting - iFixit
Psp-s340 seems to be working and connecting but not charging - explanation in comments : r/PSP
PSP won't turn on without charger. Easy fix. Reset the battery MCU. open the battery shell, short B- and R letter for a couple of seconds. Done!!!. use clear tape to seal
If you own a PSP, you might want to uh, make sure your battery isn't expanding – Destructoid