Ok guys i have a AC Adaptor.
Input: 120VAC 60 Hz 9W
Output: 4.5VDC 550mA
Now it doesnt have the right plug for my psp but i have a car charger and i want to take the end of that and place it on this but the question is the voltage compatible with my psp cuz is 550mA to much. I believe it has to be close 2.0. Not sure but I need help if there is a way to convert some how.