Replacing four CG 6 volts with two Group 27?

Desert Captain wrote:
"Two group 27's is about 200 amp; hours of which you can use 40-50'"


More internet fuzzy math... {Keep in mind that there are 3 kinds of people on this planet, those that can do math and those that can't.} :B Two group 27's that offer a total of 200 amps give you 100 useable amps, not 40 - 50.

Most folks overestimate how much DC they actually use {Spending lots of time and money searching for a solution for which there is no known problem... the government does this a lot}.
:S

Our two, 4 year old, Interstate Group 27 {true} deep cycle batteries give us an easy 3 - 4 days of normal use off of the grid. Since we rarely stay in one place for more than 3 or 4 days and driving just a few hours tops them up nicely we rarely run the generator. Our coach is 7 years old and the genny has 85 hours on it and yes we are off the grid most {60 - 70 percent} of the time.

We don't have slides or electric steps, don't watch TV or movies, just a couple of hours of lights at night - I read and my bride journals {absolutely no reason to spend the $$ for LED's}. The water pump draws so little as to not even be a consideration.

The one big draw is the furnace {the squirrel cage fan} but with a 35K BTU furnace it runs so little as to not be much of a factor and then only for a few months of the year {yes we RV year round out here in southern Arizona}.

My batteries require regular topping up and that frankly is a PITA. I may spring for AGM's when these finally start to go but at more than twice the price I will probably suck it up and keep watering them.

One thing I learned in 35+ years of boating is that the two biggest lies in the English language are:

Waterproof and maintenance free.

As always... Opinions and YMMV

:C

Thanks.

My old 97 Holiday Rambler had one Group 27 and we ran the furnace all night on it, never had a problem.

We just don’t go where there is no electric.

The Tampa RV show every three years or so.

And you run your gen during the day.

My big concern would be could the 2000 watt inverter could damage the batteries if someone ran the microwave and I think they could handle it.

It just me a DW and she’s pretty smart.