All ActivityMost RecentMost LikesSolutions12V battery questionNewbie battery question here. I have two group 29 batteries which do not fit end to end on the battery rack between the tongue. We are going dry camping for a week and I am wondering if I should build a battery box that sits atop the tongue and wire the batteries together or if I should just switch out the first battery when it gets low. Is there a benefit to having the two batteries wired in parallel rather than switching them out mid week other than a little less work? Thanks for the advice Dan