I have run my residential overnight, not plugged in, with no ill effects on the batteries. Just make sure batteries are charged. Mine is a Whirlpool 18 CU.FT. I believe after compressor kicks in, current falls off to about an amp to an amp and a half.
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Glenn & Jeanne
2014 Palazzo 35.1
2015 Equinox Toad
BlueOx tow system
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