If the R3 doesn't have the excess paower to run a jacket, you can always buy one of the heated vests made by Mobile Warming that run off a lithium battery pack.....Does anyone know what the EEC rating is for the R3? I'm looking at adding some heated clothing to my gear closet but I'm not sure if the R3 electrical system can handle running a jacket and set of gloves. According to powerlet's site, a 600cc bike (smallest thing listed) puts out about 105 excess watts and heated clothes run around 75-90 W total for jacket and gloves (of course those numbers are very subject to change). 105 excess sounds like it might be a bit generous for the R3 but assuming that is the number, that's still a bit close the maximum capability of the electrical system for comfort. If I'm confused on the subject, please school me. Thanks!