Stig, you should go the route of LiIon powered gloves. No wiring or hacking required of the scooter, and on the medium setting they last up to 48hr, at least the nice ones. You don't have to worry about snagging wires hanging down by your legs, and if you want to get off your scoot just for a minute you can keep the gloves toasty on your hands and not have to unplug any wires. The ones our rep showed us were really slim, not a huge battery pack at all. Just my $.02 on the whole thing!