Is it imperative to have AGM batteries with a solar set-up? Why? Could you not just use 2 6v batteries (not AGM's)? Do they last longer? How much and are they really worth the price difference?
no you don't need AGM's for solar. I do have AGM but for me I just like the maintenance free aspect. I also have a very tight battery compartment and flood grp31 6v batteries wouldn't fit but the 6v AGM's have lower terminals so they fit.