Can you recharge the battery for the psp using the usb cable for psp 1001-k or psp-1000?

i have found a way to charge my psp with a mobile phone charger:1)you simply cut of the point that goes into the phone and strip the wires 2)see which one is positive and which one is negative 3)then see on the battery the positive(+) and the negative(-) sides 4)then connect positive wire to positive port on the battery and do the same with the negative wire 3)put battery back into psp with the wires on 4)turn on psp and go to battery info it should say (E.G) charge level:43%

time left:-

power source:battery

and please do not let the wires touch one another!!!!!!!!!!!