Lol by that I mean a wind turbine. I was looking at the 12 volt webside (St Austell) and I saw a wind turbine battery charger thingimijig. Has anyone got one of these for their motorhome? it says you can use them to charge your MH batteries, but do you actually attach them to the van? so they charge as you go along? or stick them in the ground and hope for a breeze? I know! I know! but I am new to this MH business.