so does anyone know how to charge a slim psp battery without a psp? will one of those wall chargers work for the slim batteries?????

i broke my psp so it will only charge via usb (im an idiot) and i was playing it all day and i killed the battery (again im an idiot cause i know to turn it off when it start blinking but i wasn't paying attention cause i was playing a game).. so to charge it i have to turn it on... i have to do that cause the ac adaptor port does not work and usb won't work to turn it on with no bat... help!!!