I'm attempting a Gamecube portable, and a few things are left vague in many tutorials or glossed over all together. Firstly, the battery. What kind of battery(s) should be used, voltage, capacity, everything. Secondly, is it possible to boot an SD media launcher or some other method of SD card using a modchip such as XenoGC? I would like to be able to use the portable without the original disk drive or a WiiKey Fusion (which i can't seem to find pricing and availability information for anyway).