20FT 10AWG Solar Panel Extension Cable

I have quite a few cables from various brands, and these are on par with the better-quality ones (WindyNation, BougeRV, etc.). The picture is accurate in that you only get one set of MC4 connectors which is fine if connecting to a charge controller, but you’ll need another pair if you want to make an extension cable out of this. The connectors are solid and play nice with the other brands of cables that I have. See pic for cable specs.

Connectors feel solid and good quality wire

I recently picked up a 2-pack of the 200W bifacial panels from Callsun, and I needed these 20ft extension cables to complete the setup on my patio. They are a perfect match—the connectors fit seamlessly with the panels, and the 10AWG thickness ensures I'm getting full power output without any noticeable loss. It's great to have a complete ecosystem that just works together effortlessly. Highly recommended if you're buying their panels.

I did quite a bit of research before buying, and for the price, the specs on this Callsun extension cable are hard to beat. The dual-sheathing is a huge plus for me because I have to run these along some gravel paths where thinner wires would have just ripped. I also appreciate the TUV certification, which gives me confidence that this is a safe, fire-retardant product. It's a no-nonsense, high-quality piece of gear that just works.

Bought these alongside a pair of Callsun 200W panels for my off-grid shed. It's nice to buy a cable that I know will fit the panels right out of the box without any adapters or guesswork. The cable is thick, the insulation is high quality, and it looks like a clean, professional install now. If you're going with Callsun for your panels, just get these cables to save yourself the trouble.

I'm currently building a small off-grid setup for my workshop, and I needed something reliable for the long run from the panels to the battery bank. These 20ft 10AWG extension cables from Callsun were the perfect choice. The build quality is noticeably superior to some cheaper alternatives I've tried—the thick insulation feels like it can handle a lot of wear and tear, and the tinned copper makes a huge difference in power transfer. No voltage drop issues at all. Highly satisfied.

I'm new to the world of solar, and I was intimidated by all the wiring. This extension cable made it much simpler. The connectors fit perfectly onto my panels. I did have to watch a quick YouTube video to understand that the bare end needs a connector if I’m not wiring it directly into a terminal, but that’s on me for being new. The cable itself is very high quality and feels very safe. Happy to have my panels finally connected!

I’ve had such a hard time with other brands being super stiff and hard to manage when routing through small spaces in my van. These are surprisingly flexible for 10AWG wire. The dual-sheathing design seems to offer great protection without sacrificing the ability to bend it around corners in my cable management tracks. It saved me a lot of frustration during the setup. Plus, it arrived perfectly coiled and clean. 10/10.

These cables are excellent for outdoor use. I live in an area with pretty extreme weather, and after putting these through their paces over the last few weeks of heatwaves and heavy storms, they still look and perform like they're brand new. The IP68 rating seems completely legit, and the connectors are tight and waterproof as advertised. If you’re looking for a solid 10AWG extension that won’t fail you in the middle of a season, this is the one to get.

Nice cables and ends. Would recommend. Remember only one end of the cables have ends.

One thing I really appreciate is how clear the labeling is on these cables—it takes all the guesswork out of polarity during installation. The wire itself is nice and flexible for a 10AWG cable, which made routing it through the tight spots on my van much easier than I expected. They feel durable, the copper is clean, and they perform exactly as promised. Very impressed with the build quality overall. Just remember to have your crimping tools ready if you need to modify the bare end!

I installed these on my travel trailer last weekend. The 20ft length was spot-on for what I needed to connect my roof array to the controller. The connectors were standard and matched perfectly with my existing panels—literally plug-and-play. I was a bit worried about potential connectivity issues, but everything has been rock solid since I finished the install. It feels like a high-end product without the insane markup. I’m definitely going to use Callsun for my future expansions.

Living in a high-UV environment, I've had cheap cables crack and expose the copper wire after just one summer. I picked these because of the XLPO safety insulation mentioned in the specs, and I can tell the difference. They have a matte, tough finish that just feels engineered for the outdoors. It’s been out in the sun for several weeks now and it looks exactly the same as the day I installed it. Truly built to last.

Nice price, and well constructed. Made connecting my panels a breeze. The packaging made it look like a very expensive item

The 10AWG solar panel cable that I received matches its description. One end of the cable has a preinstalled connector and the other end is bare wire. The cable and wire appear to be well made and the marking on the cable indicate that it is made for solar power.