45 Watt Solar Panel Kit
We recommend this kit from Harbor Freight to be used with the S3A12 as it is perfectly sized for this charge controller. You simply use the S3A12 as the charge controller instead of the one provided in the kit for superior charging and longevity.
You can still look up the battery to the DC outlet box to make use of those ports. Although this kit is mentioned often as a portable kit, the 3 panels and frame probably weight about 45 pounds so is not as portable as we would like. But it is perfect for sitting in your yard to charge up 12 volt batteries or to just have fun learning about the proper way to design a solar system according to the book Solar Secrets.
You can purchase this kit directly from Harbor Freight:
We recommend that you use the 12V 35ah deep cycle battery from Harbor Freight with this solar panel kit and the S3A12. Flooded cells are better, but if you need to carry it around, it is safer to use a sealed one: