4 X12 = 6 X 8?

Gdetrailer wrote:
Group 27?

Those are RV/Marine batteries which are "combination" starting/deepcycle, they do either job poorly. .go to Sam's or Costco and get their 6V or 8V GC2 batteries..

They are labeled Deep Cycle with 109 AH rating. No starting rating. Both are less than six months old and work great for camping trips.

8-6's will not fit.

Group 27?

Those are RV/Marine batteries which are "combination" starting/deepcycle, they do either job poorly. Basically built for light duty trolling motor applications or in a pinch starting a small gas engine.

With a GC it won't take long to destroy the group 27 RV/marine batteries..

Many yrs ago, my Dad tried RV/Marine batteries in his truck for starting and to power the TC.. Didn't work well for starting his truck on cold winters days and marginally worked OK for the TC.

If you want your GC to work correctly, just go to Sam's or Costco and get their 6V or 8V GC2 batteries and be done with it those batteries are reasonably priced and work well.. No need to buy super expensive name brand GC batteries..

TomG2 wrote:
I already have two group 27 12 volt Deep Cycle batteries

Are they new?

If not, then buy four new ones from the same brand.

It's not recommended to mix new and old batteries together.

As long as you use a semi deep cycle and it adds up to 48 volts and always keep the batteries top charged you will be fine. Go easy on the throttle too for longest life.

No problem. I put 3 12s in a 36v cart. Works fine.

The range isn't as good as with more amp hours but it works.