I believe I saw these folding panels in post by Twoxentrix.
My 200 watt unit is from www.lensunsolar.com
It has 5 40 Watt panels that fold out and deploy at an angle. The panel I purchased did not come with a controller, it just has MC4 connectors.
To hook the folding panel into my existing system I used a Marinco 12VCP - ConnectPro Receptacle & Plug Kit
I wired the receptacle in parallel with my existing panels. I chose to use Dual PowerPost Cable Connectors
, but you could get away with paralleling at the controller in most cases.
I made a quick cable by cutting the ends off one of the sides of a MC4 extension cable
. and connecting to the plug. You see below the panel is deployed in my driveway. This was about 10:30 in the morning and I was getting consistently over 9 amps, when combined with the panels on the top of the van I was reading 25 amps. Total wattage of panels all panels is 560 watts.
The nice thing about these panels is there folding size 22” x 21” x 2.5”, also the extension cable rolls up nicely and fits in the zippered pouch.
And more importantly stowed in the rig.