My 2014 Miramar batteries (2) are junk in 18 months. One kept sulfating/venting and destroyed the (cheap) strap that holds the batteries down.
I modified the battery compartment and installed (4) new 6 volt batteries. And a (2) new style straps.
Two batteries were never enough to keep (just) the 110 VAC refrigerator running through the night without the generator coming on (automatically). They would last about 3 hours before the generator kicked on.
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