What an awesome product! I assume you have to charge the battery separately. I wonder how many starts it’s good for before needing to be recharged. The weight is not an issue for me as I have to add lead to my kart to meet the minimum anyway. This sure would make life easier! $650 is up there though!!! I’d LOVE to have it but I have gotten so good at starting my stock Honda that I don’t think I could justify $650.00. MAYBE $400.00. Most guys I know just spin the rear tires with their hands while the kart is on the stand and then put it on the ground. If you stall you are SOL! The electric start could save the entire day/session for us road racers. Wonder if this will be legal??????