First off, Welcome to the forum!!!
I am not sure that I fully understand your setup, but I will try to provide some guidance for your question. Having a solar panel connected to your starting batteries is nothing unusual. Many have them hard-wired - they are designed not to routinely be disconnected.
I am assuming by "...solar trickle charger..." that you mean it is one of the smaller 10watt solar panels. If not, a little bit more info might help us to better understand your question.
\ken
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Ken, Deb, & Gadget (WIT Club, FMCA, SKP, and grateful volunteers with Habitat for Humanity and SOWERs), traveling in a well-behaved 2005 Winnebago Vectra 40FD w/1100w solar, some gee-golly-whizbang, and a TRAILERED 2015 Cherokee TrailHawk toad.
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