got the battery tender on mine (under seat) fits fine. also on amazon battery tender makes a female power port (cigarette lighter) adapter that plugs right in (also under my seat) for $10. I was looking at the powerlet too but its expensive. I put some scotch dual lock velcro (staples) on the tank fill plastic piece and put my gps on. I routed the wiring down under the top of the tank and back to my seat. came out nice, no wierd mounts and the gps rides flat and easy to see. only down is you gotta remember to unplug your adapter under the seat when ride is over. i seriously doubt it would drain your battery very quickly though