Battery replacement

Moved from Forum Technical Support

Wiring batteries

Left side --- Two 6V in SERIES for 12V
Right side -- Two 12V in PARALLEL for 12V



For 2 batteries
Series......doubles the voltage but amp hour remains same
Parallel....voltage remains the same but amp hour doubles

6V 200ah......12V but still 200ah
12v 100ah.....12v but now 200ah

So get high amp hour rated 6v batteries

Yes, very good idea and easy to do.
Mark cables going to rig before disconnecting.

As others have already pointed out, two GC2 type six volts batteries are superior to two 12V batteries in almost all aspects -- except price. They are pretty much the industry standard in the motorhome industry. Travel trailer systems are no different. I suggest you go with GC2 six volt batteries.

I did the same thing and went with a pair of 6 volt golfcart batteries from Samsclub to replace the pair of 12 volt batteries that came with our TT. Definitely a good idea for us as we do lots of RVing without hookups and they tolerate deep discharging better. We found wiring them in series is no more difficult than wiring them in parallel, last set lasted 7 years and still had life in them.

Do you do a lot of dry camping? True deep cycle batteries are very rare in 12V configuration. 6V golf cart batteries are true deep cycle and will survive better being discharged. So basic answer is, yes a pair of 6V golf cart batteries are a good idea. But not until you answer my question first.
Remember, two 6V golf cart batteries in series are nothing more than one giant 12V battery.

I think it is a good idea, however you will hear some say that with 2 6's and one goes bad you have no power but with 2 12's and one goes bad you still have power. I think the risk of the later is not very high, especially if you start off with 2 NEW 6's.