[familyop]

Find the values (specifications) of the PV module diodes, and get some extras. As for the controller,...

These controllers are very low cost, tough, easy to install and versatile (wide current and voltage ranges).

http://www.solar-electric.com/inverters-controllers-accessories/chco/misoclchco.html

Toss one or two of those in a steel trash can with a tight lid and some insulation...and some of these (lightning arrestors, surge protection, etc.).

http://www.solar-electric.com/installation-parts-and-equipment/midnite/cipr1.html

As for inverters, I’ve only used the Exeltech inverters for mobile applications so far and haven’t looked at the specs for inverters for home installations. Might have a look at the Magnum brand ones and consider putting an outdoor enclosure over one or two for extra protection.

[steve86]

Thanks for the info — I’m familiar with the website. However, I’ve busted my budget on high-quality pure-sine output 24V inverters and true MPPT charge regulators and probably couldn’t even afford the trash can lids right now!

[steve86]

One thing that worked out well is that I got 12 new Trojan T-105s for $73 each. This was from a company that pulls them out of new equipment and customizes the equipment with their own name and gel-cell batteries. This bank will be in combination with my old Trojans from 2005-7 that still test out fine.