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 prett...
Forum Discussion
"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 $$ for LED's}. The water pump draws so little as to not even be a consideration.
The one big draw is the furnace {the squirrel cage fan} but with a 35K BTU furnace it runs so little as to not be much of a factor and then only for a few months of the year {yes we RV year round out here in southern Arizona}.
My batteries require regular topping up and that frankly is a PITA. I may spring for AGM's when these finally start to go but at more than twice the price I will probably suck it up and keep watering them.
One thing I learned in 35+ years of boating is that the two biggest lies in the English language are:
Waterproof and maintenance free.
As always... Opinions and YMMV
:C
More internet fuzzy math... {Keep in mind that there are 3 kinds of people on this planet, those that can do math and those that can't.} :B Two group 27's that offer a total of 200 amps give you 100 useable amps, not 40 - 50.
Most folks overestimate how much DC they actually use {Spending lots of time and money searching for a solution for which there is no known problem... the government does this a lot}.
:S
Our two, 4 year old, Interstate Group 27 {true} deep cycle batteries give us an easy 3 - 4 days of normal use off of the grid. Since we rarely stay in one place for more than 3 or 4 days and driving just a few hours tops them up nicely we rarely run the generator. Our coach is 7 years old and the genny has 85 hours on it and yes we are off the grid most {60 - 70 percent} of the time.
We don't have slides or electric steps, don't watch TV or movies, just a couple of hours of lights at night - I read and my bride journals {absolutely no reason to spend the $$ 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
