Sitting on the dealers lot without being on shore power will ruin most original house batteries. Due to the "always on" parasitic amperage draws, most house batteries will be below 11.5 volts in three weeks without being charged. You need to check the voltage at the battery with a voltmeter to ascertain the batteries charge state after sitting for 24 hours. That will tell you more than our guessing.
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Jim & Roy Davis
2016 Hurricane 31S
1961 Rampside in tow
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