I did that last year, only instead of sending in my charging adaptor, I just bought another one from Mike, along with the kit. I love it, it's easy and it charges fast. I'm sure it has made a considerable dent in our Ah drain. I always will charge computers when the Honda is going, or the engine, regardless whether they need them or not. I hate using the Inverter for this ... bad, bad, bad. If I get stuck, the 12V adaptor comes in handy and not much of a drain.

cheers, John