how to hook up dual batteries in motorhome
I have one 12 volt coach battery and have heard that it would be better to have two, how do I hook them up?
Forum Discussion
Hi,
Why not move both batteries to the compartment?
Why not move both batteries to the compartment?
maillemaker wrote:
I have a question.
I installed a second battery in my RV. It's a class C with one engine battery under the hood and one house battery under the hood.
There was no room for a second battery under the hood, so I installed one in one of the underbelly storage compartments. I put it in a battery box and bolted it down securely.
I ran cable from the + of the original battery to the + of the new battery, and likewise for the - terminals. I realize this is not the balanced way to do it, but it results in only 2 20-foot cables running from one battery to the next.
If I do it the "balanced" way, I will need a 3rd 20-foot cable coming from the new battery back to the engine compartment.
Is the savings of the more efficient, balanced installation offset by the resistance of the 3rd 20-foot cable run that will be required?
Steve
