If you have a motorcycle, you should have one of these. Your starting system will appreciate it. I have a 250R that is used for commuting. This bike doesn't charge well at the lower RPMs, so over time the voltage does droop a bit. Plug this in overnight (really like an hour) and it takes care of that. This also works with my car. The other day, my car was having a charging issue, and with the included clips I was able to use this to top it up over night. I recommend getting some extra quick plug harnesses. I have one on both of my bikes and am buying another one for the car.