See Also: Best 12 Volt RV Lithium Battery Reviews + How To Charge I suggest 4 AWG because the less resistance the more efficient the transfer of power is from battery to battery.īecause every set-up is going to be a little different depending on the sizes of batteries used and the storage area they go in I suggest getting a long length of red and black 4 AWG copper wire with the right kind of battery terminal connectors. The best sizes to use are 6-4 AWG copper wire. The first thing you need to wire RV batteries together is the proper wire.
This will make all your RV batteries last longer and work better. The goal is to wire the 12V batteries together in parallel the right way so the power is balanced between all the batteries. But there are a few ways to do it wrong that I’ll go over. Wiring multiple 12V RV batteries to an RV isn’t very difficult and most people can do it themselves. Note that I’m not a professional and my knowledge is very limited when it comes to large solar power banks that require a lot of batteries.ĭo RV batteries in parallel last longer? How To Correctly Wire Multiple 12 Volt Batteries To An RV I’m focusing more on adding 12 volt power to your RV not creating a solar power bank. In this article, I’m going to show the best ways to wire both 12 volt and 6 volt batteries to your RV. See Also: Best Deep Cycle RV Batteries (AGM, SLA, 12V, 6V) One of the easiest ways to add more battery power to your camper is to add more RV batteries.
Lead-acid batteries can only be drained down to around 50% before taking damage and Lithium-ion around 20%.Įven if you have a generator or solar panel to charge the RV batteries every day you are going to want a lot of stored power so you can use as much electricity as you need each day and night without damaging the RV batteries. No matter what kind of RV battery or batteries you are using it’s not good to drain them all the way.
Related Product: We use the reliable VMAX 100Ah AGM battery (click to view on Amazon) in our RV. Even when switched over to LP gas (propane) the fridge is using electricity. When not connected to power an RV uses more electricity than you think.Įvery time you turn on a light, use the water pump, a fan, or the furnace power is being drained from the batteries. Why Connect More Than One Battery To An RV?