take out the battery and put it back in.
you cant
That's happening because you dropped your PSP or your battery is really old. Now to fix this just buy a brand new PSP battery after that it should be fine.
The short answer is no. The PSP slim "CAN" take the larger battery from the PSP-1000 series, but it sticks out and you need to get a custom battery cover for it. The PSP-1000 can take the Slim or PSP-2000 battery, but, the same logic follows. It's best to keep the proper batteries to the right console.
Don't panic!!! take the psp back it they will let you, if not there are people that can fix psp's
go to the spot you bought the battery from and ask for a refund and say, " This Pandora Battery doesn't work".
Google for Pandora's Battery. OR you can bring it to a game selling shop like Game Stop® and ask them to fix it or replace it. poo
I'm not sure they can fix our psp
Unbrick one with a Pandora battery and memory stick. if the hardware is intact, then it will most likely fix it. you may need a friend with a hacked psp to do this. www.dealextreme.com may provide you with the battery and memory stick to do this for a reasonable price.
It's only possible to turn on your PSP with an adapter for the PSP or a battery for the PSP.
No you cant the slimmer battery is just too small but the normal battery can fit in both normal and slim PSP!!
Get another battery. You should of had backup files on your PSP battery.