12 volt dual battery setup petes rv quick tips cc displays how to properly connect two 12 volt batteries in parallel help maintain your rvs battery and electrical system are . A well thought out 12 volt electrical system in a recreational vehicle or rv allows for extended periods of remote camping and the reliable starting of the engine the system comprises two separate 12 volt sub systems one serves the chassis system and runs the automotive part of the vehicle and the other serves . Today well learn a little about the 12v system and how it is used in the average rv the 12v system on an rv allows you to operate your lights and appliances without being connected to shore power plugged into a 30a or 50a outlet for electricity the 12v system on an rv consists of a few basic components and they are shown in the diagram below. It doesnt matter how big the lead acid cells are they will still only produce 25 volts you can see this for yourself if you compare a standard rv marine 12 volt battery to a standard 6 volt golf car battery the two batteries are ruffly the same size and weight but the 12 volt battery has 6 cells while the 6 volt battery three. The 12volt side of life lets just take a look at a block diagram of a typical rv 12 volt system see theres really nothing to it in the simplest terms you have lights and other equipment such as water pump fans stereo etc that run on 12 volts a battery that supplies the 12 volt power and some sort of charger to replenish the
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