with this battery, you CANNOT switch the polarity of the plugs by simply turning around the connecter
i have 2 of these specific batterys, and the plug/cable is wired so that the positive stud that connects to the plug/cable is larger than the negative one... you cannot simply just turn these around like a radio shack adaptaplug cord
you wopuld have to hack it and put a different connecter on it, which is easily done, but the charge cable is short, so hacking it is a PITA