So, first of all i know it wont, but i just want to know something, because im afraid of testing it. So i dont have an on/off switch, so it turns on when it gets power. So my battery pack got an built in on/off switch. its solderd to the gc, so when i turn on the battery pack the gamecube will turn on aswell of course. so when the battery pack is on "off" and i plug in the gc original power supply, what will happen? will it just get the power from the power supply? and what will happen to the battery pack? if something bad will happen, how can i make that i still can play off wall power with the battery built in? if it wont work i have to make the battery external