I believe that power bank works even without there being the internal battery in the PSP, just as the latter works plugged into the home power supply even without the battery inside.
It seems the PSP sometimes charges and other times it doesn't. Is the PSP battery setting reliable? The last time I was able to charge the PSP, it said the battery would last approximately 3:30h. Sometimes, I turn on the PSP the next day and it has no battery when I was able to charge it the day before and turned it on and off after it was finished charging. Maybe it doesn't charge it until 100% when it's able to charge it, even though said setting says it has 100% battery.
Last edited by Windows_10_User,