I bought cheap (http://www.dx.com/p/universal-eu-plug-dual-usb-car-charger-for-iphone-ipad-ipod-5v-2a-238142) 2.80USD ea for to be a power supply for 5v boards, now I wanna see if they deliver, they say 2000mA, but my phone max out at 1000mA (I DO know that load determines current and not theoretical maximum). Now before I overload and fuse it by shorting live and ground with my multimeter, I wanna know: is there a correct way to do this without fusing the power supply?