Parallel Rv Battery Wiring

Your rv will have either a 6 volt battery configuration which is connected in series positive to negative to create a 12 volt bank or a 12 volt battery connected parallel positive to positive negative to negative to also create a 12 volt bank with twice the amp hours.

Parallel rv battery wiring.

The low down on batteries. But what if you have an rv for example and need to add 3 or 4 or 8 batteries in parallel. 6v rv batteries need to be wired in series in pairs to create a 12v battery. Then connect the two positive posts together with charger wire secure the clamps and then do the same with the negative posts.

Once two 6v batteries are wired together in series you can wire them to another pair of 6v. Unlike wiring batteries in series when batteries are wired in parallel the voltage does not increase the output voltage is the average voltage of all batteries in the circuit. 12v rv batteries should always be wired in parallel because you want to keep the voltage the same but increase the amp hours. This can be achieved with a single 12 volt battery or several 12 volt batteries wired together in a parallel circuit.

Once you have the batteries wired properly in parallel you will need to connect the 12 volt power wire from the trailer 7 way connector to the positive wire on the first battery. You will now connect these batteries in parallel with each other that is positive with positive and negative with negative. Yep electrically speaking that works. Do you continue to add to the string in a linear fashion figure 1.

Your rv s 12 volt system needs to have a total of you guessed it 12 volts. Four 1 2 volt 2 000 mah wired in parallel can provide 1 2 volt 8 000 mah 2 000 mah x 4. The trailer positive lead should be connected with the first battery s positive terminal. When asked how to charge batteries in parallel people commonly reply connect the positive to positive and negative to negative.

This connection will help maintain the batteries when the vehicle is running but will not charge them sufficiently from a discharged state. For example if a 3v and a 9v battery were wired in parallel the output voltage would be 6v 9 3 divided by 2 however the current will be total amperage of all.