I have a Renault Trafic Camper Van and have just ordered a AC180. I plan to use a Charger 1 to keep it topped up. Previously I had a lead acid leisure battery using a split charger, so I have a high amp Positive wire running to where I intend to store the AC180. With the leisure battery I just had the negative go to the chassis. Can I do the same with the Charger 1. Connect the Live wire and run the negative to the chassis?