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?
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I actually went with an Optima blue top group 31. It is 75Ah and cost about $225.
I compared it to basic wet cell 6v batteries that were recommended and they totaled about 85Ah and cost around $200, but I would have had to do a modification to extend my battery hold into my one outside storage hold to fit the 6v batteries. For me, the difference wasn't enough to give up that space.
I've been really happy with it. I can go 4 days without dropping the battery at all. I will run out of fresh water before I take the battery below 80%.
That's why I say it's dependent upon the particular usage. This works perfect for me. As for durability, my engineer boss has been running one in his RV for a good 12 years now with no replacement.
I did actually get mine replaced when I had my engine rebuilt - they accidentally wired the choke to the house battery and bypassed the ignition shut off. It ran down the house battery completely. When I took it back to the shop, they recommended I change it out (it did recharge fine). I was 1 week out of warranty and they went ahead and accepted it.
I compared it to basic wet cell 6v batteries that were recommended and they totaled about 85Ah and cost around $200, but I would have had to do a modification to extend my battery hold into my one outside storage hold to fit the 6v batteries. For me, the difference wasn't enough to give up that space.
I've been really happy with it. I can go 4 days without dropping the battery at all. I will run out of fresh water before I take the battery below 80%.
That's why I say it's dependent upon the particular usage. This works perfect for me. As for durability, my engineer boss has been running one in his RV for a good 12 years now with no replacement.
I did actually get mine replaced when I had my engine rebuilt - they accidentally wired the choke to the house battery and bypassed the ignition shut off. It ran down the house battery completely. When I took it back to the shop, they recommended I change it out (it did recharge fine). I was 1 week out of warranty and they went ahead and accepted it.
