PHITUODA 5FT Black + Red 10AWG(6mm²) Solar Panel Extension Cable Wire, Solar Adaptor Cable with Female and Male Connector - Set of 2

Works fine.

I am running 4 100 watt solar panels to my Bluetti inside the RV. I dont know much about solar panels or wiring. I know when the sun is shining I am bringing in almost all 400 watts from the panels so I assume the extension cord is working well

These do not disappoint

I bought these to extend my solar panels cables to run into my storage building so that I can wire up some LED lights. I was going to buy another brand that only had connectors on one end, but these were cheaper so I got these and cut off the ends I didnt need. The insulation was easy to strip with my wire strippers. One con that may not be a con to some, is the insulation seems a little bigger than normal 10 gauge. I had some 10 gauge wire that I was using in another part of the install, and the positive and negative wires together fit through a 1/2 PVC pipe that I planned to run through my buildings floor. But these cables when put side by side were too big to fit through 1/2 pipe. Not too big of a deal as I ended up using 3/4 pipe, but I was trying to keep the hole drilled as small as possible. Good cables, though, and Id buy more in the future if I need.