87bobExplorer12 years agoBattey QuestionsIt appears that I am going to have to replace the battery on our TT. It is an interstate Deep Cycle. Here are some questions I have about 12VDC power: 1) Would I gain much by adding a second batter...Show More
brownieabExplorer12 years agoThe second battery place on the GMC is for a diesel engine.If you usually camp with full hook-ups, your need for a second battery is non existant, one will be fine.Need more info on your camping style