Oh Boy! RVers favourite topic. Batterys.
Without even going through the whole thread & know the concensus is 6V wet cells. They are cheap & they are readily available.
I am in the minority owning a AGM. It comes from my boating past where you don't want wet cells, with their venting flammable gas, in the bilge of your boat.
I took my 5er a step further & set it up like a boat, trashing the cheap & nasty converter/charger & installing a pure sine wave inverter/charger which has progamable multi stage charging, along with a single 4D Lifeline AGM. That was in 2011.
The AGM is still going strong. It sits November to April unconnected & untouched. No trickle charger. No mid winter top up charge. 5 seasons past & I expect at least another 3 more before replacement will be due.
Yes, an AGM is not cheap but the performance is far superior than 100 plus year old wet cell technology.
