My Luna charger arrived a couple days ago, but I just got around to making the adapter last night. The charger works very well, and since it stops charging automatically, I don't have to be overly concerned about when it finishes. I have two batteries, so I just made the adapter with an end to fit each one. I can only charge one battery at a time, which is a bit inconvenient, so I'll probably buy a second charger. It's not a big deal at the moment because rides in the winter are shorter, and I don't NEED 80 miles of range right now. I may just use the second battery, and save wear and tear on the more expensive Rad battery by leaving it at home. Photo of the adapter is below!