Two 6 volt vs two 12 volt run time
I was just informed that two 6 volt batteries would run the residential refrigerator many times longer than two 12 volt batteries. I wonder if this is just hype?
Forum Discussion
Atlee wrote:
If I get a pair of 12v deep cycle batteries, I want them to be the same type battery construction as 6v golf cart batteries and I want them to be in the same general price range for the about the same # of amp hours.
You hit the nail right on the head!
For instance, the 12V true deep cycle Fullriver AGM batteries I showed in my link were an "expensive" way to get 230 amp hours capacity out of two of them in parallel.
BUT, I'm betting that 6V true deep cycle AGM (not Sam's Club/Walmart/Etc. golf cart liquid acid) batteries would also be an "expensive" way in order to get 230 amp hours capacity out of two of them in series.
Being careful to do apples-to-apples comparisons are what it takes to really be sure of what you want verus what you might be getting.
The bottom line is - if you want to get the most bang for the buck with no consideration of the advantages of AGM - go with Sam's Club/Walmart/Etc. 6V golf cart liquid acid batteries. 12V TRUE DEEP CYCLE batteries - whether it be liquid acid or AGM - will always be more expensive versus amp hours of capacity.
