How To Connect Two 6 Volt Rv Batteries. Properly connecting your RV batteries is an important and often overlooked step. Therefore both configurations can be charged by any 12-volt battery charger by simply connecting the chargers red cable clamp to the plus 12.
If you use solar power or have a large motorhome you may need a more powerful RV battery. If you join two 6-volt RV batteries in parallel you will get 6 volts but the amps will now be increased. RV batteries in parallel.
If your energy use is limited to a 12-volt lighting system water pump refrigerator CO alarm 12-volt stereo system heater then two group 27 or group 29 deep cycle batteries will probably be enough.
Take a look at the diagrams here. To switch from two 6 volt batteries to a single 12 volt you can simply connect all power to the positive terminal and the negative connects directly to the frame ground. Making sure your twelve volt 12V batteries are hooked up in parallel wil. A parallel RV battery bank increases the current but allows the voltage to stay the same.
