Project complete: 500w solar install, plus 2000w inverter

ya even with two 6V I find a microwave is so so, in the 5th wheel I have four 6V and it is fine.

one thing by going to series with a MPPT controler you will get charging eailer and laiter during the day as the voltage his high enough to start charging. it will be a small curent but an extra couple AH before and after is nothing to complain about. I like your idea about adding two more and going to 1000watts.

Steve