After a long ride both my wife's and my Rad Runner's don't want to charge. The power light comes on so does the Green charged light. However we've discovered if we wait just a few minutes and then connect the charger they start charging.

My wife and I both have the Rad Runner. We love them and they have been very reliable. We're only had one problem. They don't seem to want to charge right away after a long ride. But if you wait for a few minutes they charge fine. This is the same for both bikes.