I needed a way of charging my psp at work, I work in earthmoving equipment where 12v is not always available. So I made this up from mashing up various other instructables. Don't try this and blame me when you fry your PSP - always test the final product with a multimeter and ensure the polarity is correct before plugging in your PSP.
Step 1: Get the goods
Bits you will need......
PSP case Two old garden solar lights (the two AA flavour) 4 AAA Nimh Batteries Tape Foil 5volt regulator link Shrink tube Spare wire PSP Plug