psp1000/2000/3000

I want to modify the output plug of my psp1000 charger from a round one to a USB port so that my pspGo can use it. The only thing I have noticed is that the output current of the charger of the phat is 2000miliamps. while the charger for pspGo is 1500miliamps. only, I don't know if it will...