I bought ten pairs of connectors thought I wouldn't use them all but to my surprise I have two extra pairs left and will probably use them in the near future if I expand my solar panel. I took off a star because they didn't come with assembly instructions or tools. So if you get them, go to YouTube or the Internet and find out how they should be installed. Essentially, the female connector connects to the male connector and the connector connector to the female connector. It's a little tricky, but the socket doesn't fit the socket, so start with the socket. That being said, you should use these because you can connect panels in a serial array, in a parallel array, or a combination of both. Also, I didn't have a build tool, but I don't need it.
CARKU Pro-10 black/red
91 Review
Keep Your Battery Fully Charged With A Smart 12V Charger/Maintainer Featuring Winter Mode
28 Review
Charger Vympel 57 black
110 Review
Mroinge Automatic 6V/12V Trickle Charger For Vehicles, Motorcycles, Boats And More - Maintain Your Batteries With Ease!
29 Review