Awesome project, even if it's not especially useful. Nice one!
If you can charge the battery for free (at work, school...) you can take it home and hash for pure profit
There is no way this would be able to pay for the power it uses
The thing is, I'm living im a house witch has gas, electricity, etc included... So if I spend 10 or 10000 it's the same price at the end of the month.
If I have 3 PSP stopped without doing nothing mith as well put them working!