I've got 2 of the Sanity Solar 255W panels. Specs below. I need recommendations on how to set them up. Should I wire them in series or parallel? Two panels is either 31V or 62V max. Should I consider nominal 24V or 48V input for the charge controller? Is it better to use a 12V/24V/48V battery bank with these panels considering the input voltage into the charge controller? I want to minimize power loss, max efficiency, and minimize voltage conversion. Then there is the inverter that is dependent on the battery bank voltage. I'm looking at 1750-200W inverters. I have a Xantrex 1750W 12V Modified Sine Wave Inverter, but I want a pure sine wave. My Grundfos 10 SQ05-160 115V soft start well pump draws 12 amps and I was told I should use a pure wave inverter. They recommend a 1200-1800W inverter generator to run it. I'm leaning toward making everything 24V, but 12V a big appeal. How much power loss will I see using a 12V battery bank rather than a 24V? This is a somewhat low budget project but I don't want to use crap either. Looking for recommendations for the charge controller and inverter (pure sine wave). I'd like to spend $700 or less for both components.
Pmax 255w
Current at Maximum Power (Impp) 8.22A
Short Circuit Current (Isc) 8.83A
Pmax (imp) 8.5A
Pmax (Vmp) 9.09A
Voltage at Maximum Power (Vmpp) 31.0V
Voltage (Voc) 37.4V - 38.3V