Solar Panel Connectors Compatible with M-C-4 Solar Connectors to DC Extension Cable 16AWG with DC 5.5mmx2.1mm, DC3.5x1.35mm,DC5.5x2.5mm and DC8mm Adapter for Portable Power Station Solar Generators

Purchased because different solar generators required different charging connectors: 5.5 mm for Ravpower and 8mm for Technoss solar generators. MC4 connectors/polarities matched perfectly with 100 watt Newpowa polycrystalline panel - received 85 watts at 12 noon, clear skies, April, northern California. Construction quality of connectors and cables seemed adequate for price-point. Very satisfied so far.Tip: Because polarities vary widely among different brands, it is important to verify polarities of solar panels, solar generators, and connector/cables when mixing/matching components.

Fair price, this solar cable allows me to go straight in to many of my rechargeable power banks with minimal connections with the correct size barrow plug came fast and as stated, would buy again or recommend. Thanks

Thank you to the reviewers that pointed out the polarity is reversed. I may not have checked without that information. This plug is useful for the Coocher 120W solar solar panel sold on Amazon. That panel has a DC plug output and I needed MC4 so I could use with an Ecoflow Delta 1300. Fixing the polarity is a simple cut, swap MC4 plugs and join with heat shrink crimped butt connector. After fixing the polarity I was able to successfully charge the Ecoflow Delta 1300 with the solar panel using this cable.

I bought these cables as both backups & upgrades for any future purchases I will make modest solar system. Compared to Harbor Freight, the price was right..and, b-4 all ther price increaes take effect because of the political climate--I felt the need to get them NOW. So, kindly forgive me if I can't give you a 1st hand experience, I'm feeling gald I got them for my toolbox. Thansk for reading. Don

Happy that this nicely made cable converter set solved my problem easily. Will update in case any usage reliability issue in 4-8 weeks.

The cable connector’s we’re a good fit. The adapter helped connect my solar panels to the 8mm plug.I am satisfied.

Good

I read the other reviews that say to check the polarity first, and sure enough it was reversed on the cable I received (+ is on ring, not on tip). I already returned 2 similar 8mm cables from this vendor because the adapters they included were defective (both open circuit), so their quality control is poor to non-existent. I suppose I could cut the cables, buy barrel connectors, and reverse the polarity myself like another reviewer wrote, but I'd rather get another cable from another vendor at this point.