Sandia Man wrote:
The Iota 45 amp converter is just fine for 2 batteries but you must get the IQ4 module (less than $30 online) and plug it into the side jack to make it a smart charger.
This is what I have decided to do. $50 (for us Canadians) for the IQ4 and no swapping the converter/charger. On the batteries, I will look for a pair of 6Vs. That'll get me 225 Ah, or about 110 Ah usable.
I had already swapped to all LED lights.
I have bought a stove top coffee maker to replace the electric unit. That is likely the biggest improvement.
Thanks to all who posted helpful posts on topic.