My house batteries are 5 years old and I will be replacing next season. There are no issues, but feel for trouble free continuity they should be replaced before they fail. As of now I am using Trojan T105’s, hooked in series to make a 12V. I have never run out of battery power yet. Overnight with TV, fridge, toilet and fans, etc We go to bed at 95% and never see less. than 75% in the AM. Of late, the solar has brought them back to the 90 +/- percent by 11 AM. I have limited space in teh battery area, as I would like a house bank of 4, each set hooked in series then a parallel connection to double the AH.

What is the opinion here for replacement. I am leaning towards AGM for the maintenance free water check. I see Trojan makes a 6V AGM, and a gel. Warranty on Interstate is 36 months full replacement. I have two 12V AGM in series to make a 24V system for my sideshifter thruster, so far they work great!

I was looking at putting them under the aft bed, but with teh AC in there it may not be a good idea with the chance of ignition when it comes on.

Hope to see lots of suggestions and scenarios.

Thanks as always!