Sandia Man wrote:
To answer your last question first, yes Harbor Freight's 100W kit would work as well, just more cumbersome to carry around and set-up. The Renogy solar suitcase is less than 6" folded up, protected by a rugged case and packs easily in passthrough storage, truck bed, or even the backseat behind driver. I know these details as I purchased this nearly eight years ago to supplement the 200 watts on the roof, and to move around on cloudy days or when RVing under foliage.
You can place solar controller anywhere you like, I left controller on rear of panels and wired a connection directly to battery posts, about 6" long they are easily accessible when I implement the solar suitcase. Wiring from controller is just 2 feet long, we use provided extension cord to connect it all. Definitely rugged, flew off truck's metal tonneau cover a couple of times. 5 minutes to set-up, 100 watts restores a single battery well, or keep 2 batteries topped off.
Good point, portability/packability is definitely a plus. So, if I wanted, I could just leave the controller on the back of the panels then plug in to Zamp port after reversing polarity if I get the Renology correct?