Here's my original post on how I did mine.
http://www.amazon.com/Renogy-Watts-Monocrystalline-Foldable-Suitcase/dp/B00HR8YNK6?ie=UTF8&psc=1&redirect=true&ref_=oh_aui_search_detailpage
http://www.amazon.com/Solar-Cable-connectors-Copper-Strand/dp/B008JHXF4O?ie=UTF8&psc=1&redirect=true&ref_=oh_aui_search_detailpage
http://www.amazon.com/Battery-Tender-081-0069-6-Terminal-Disconnect/dp/B000NCOKZQ?ie=UTF8&psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s01
Cut the 50' cable in half giving you one wire with a male connector and one with a female.
solder the cut ends to the battery tender part (get polarity right).
The
connector on the battery tender will plug into the zamp connector on
the rpod and the male/female ends of long cable will connect to the
leads on the solar panel.
Now you have a
portable solar setup for the rpod with a 25' wire. this lets you put
the panels out in the sun even if the rpod is in a shady spot for about
$310. I made a shield/cone thing to protect the controller from the
weather (it's attached to the panels) so I dont' have to put it away
every time it rains.
I believe it's still the right connector for you.
Bill