Forum Discussion

Big_Katuna's avatar
Big_Katuna
Explorer II
Mar 09, 2019

Replacing four CG 6 volts with two Group 27?

My four six volt batteries need replacing Again. Five years again and shot. I have a watering system but I leave the rv plugged in all the time and I forget to water them and they dry out.

Im pretty sure Im going to replace them with two Group 27 12vdc dual purpose maintenance free batteries. I chose those as the have the same footprint as the CGs and fit the rack.

I just replaced my 8 year old Group 31 starting batteries.
They were starting her just fine but I felt they were too old

We never boondock, we dry camp maybe once a year. I have replaced all the light bulbs with LEDs and the tv is LED too.

It has a 2000 watt inverter which might get used with tv. The microwave would get unplugged if boondocking.

Crazy? Stupid? Saves about $300 and some maintenance. Easier to change out, too

13 Replies

  • wa8yxm's avatar
    wa8yxm
    Explorer III
    Four six volt GC=2 is 440 amp hours of which 220 are usable

    Two group 27's is about 200 amp; hours of which you can use 40-50

    Are you sure you don't want to remember to water more often??????
  • I would stay with the GC-2 batteries.
    I would check on your converter to insure it is more of a spart charger. I replaced the converter and was surprised on how much lower batteries last.