Here’s just the "cheap insurance" you want to carry in case you get caught out on the road with a battery problem.
With our bike-to-bike Battery Life-Line and a friend’s BMW nearby, you’re out of trouble in no time! Just connect the 8-foot long cable between the accessory outlets on two BMWs and run the bike with the good battery at idle. In about 5 minutes—like a blood transfusion—enough current has flowed to the bike with the weak battery that it can start on its own! Obviously, this is not a remedy for a totally dead or severely drained battery, but for most typical low battery issues, it's a great roadside problem solver.