One option AGM batteries offer versus flooded is being able to place them inside; although many prefer batteries outside the living space even though AGM don’t have the same level of gassing as flooded batteries. I have seen quite a few van campers (both do-it-yourself and factory built) with batteries inside living space. Since inside of coach is cooled and heated, battery temperatures remain closer to ideal even when camping below freezing.
Some new vehicles like Ford Transit have AGM batteries located under seat, so unless they are vented through floor, makes me think that Ford deems it acceptable to install them inside.
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