[Chrislong]

Im also looking at Gene's, are there any cheap sources?

I have had Leisure batteries, and the lifetime of them is too short. Granted, Ive chosen ones with long warranties, and swapped them, but even so - its a real PITA when they go flat half way through a race day.

Many people have Gene's anyway, so even if I was to continue charging from 12v, there'll always be several gene's chugging away nearby. Ive taken til now to resist getting one, although I have been borrowing a socket from someone when I can - if not ive been charging from under my bonnet as I don't trust the leisure batteries. But now im considering a caravan, a Gene I see as an essential for it.