I'm thinking a rear rack mounted battery pack would be most fitting. Keep it clean. Water bottle type are to weak. Actually, I might just center mount it. It would be easier to connect to the controller hidden in the tank then. The tank has a hole in it for a horn button. I think it would be a good spot for a key switch. So, the big question now is should I leave all the Huffy stickers on or take them off? I'm leaving them on!