Hi D Lindy,
Don't know why you dislike the solar battery maintainer. The solar panel does not charge the chassis battery(s). It should maintain them in the state they were when the engine was turned off. Since you have a cover and snow, the solar maintainer will not work. For me, count yourself lucky. Almost all the threads on batteries, this time of year, have to do with the batteries "passing away" over the winter.
If the batteries were relatively new, they should keep their charge over a few months. I think the normal range of loss is 1-3% per month. This assumes no passive drains on the battery(s).
2005 Newmar KSDP 3910 + GMC ENVOY XUV 37K lbs Moving Down The Road
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