Battery life?

[1carguy]

I've got a 2 year old 2021 Reflection 31MB. It has the original battery and it seems to be holding up well, but we seldom do any dry camping, usually full hook ups so the battery hasn't been taxed much. In 2 months were are going on a long haul trip to Yellowstone and I'm doing some maintenance on the FW before we go. One thing I wondered is if the battery should be replaced just so we are starting fresh when we hit the road. If so, is it recommended to upgrade size or capacity when I select a new one. Any recommendation or particular brand the best?