We had the same issue with ours last year. At first it seemed that my whole electrical system was out of whack as once I got the battery charged enough to start the engine, it didn't show the correct readings while charging on any of the sources. Then once shut down the chassis battery would drain, in a matter of 30 minutes, too low to start the engine. The house batteries held a little better, but using the battery boost did nothing. I like to start with the simplest thing first so I replace the chassis battery. I found the same exact battery at Costco for $89, and it has a 48 month replacement warranty no matter what vehicle you put it in. Once I replaced the chassis battery, all the systems returned to normal, charged at the correct levels from all sources, and the float levels were back to the original levels. That was over a year ago with no further battery issues. Our battery was only two years old at the time, but even though we bought our MH new you never know how the batteries were maintained prior to the purchase.
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Mike & Charlotte
2014 Newmar Canyon Star 3610
Orange County, California
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