A5 100% Copper Jumper Cables 13FT– Heavy-Duty for Trucks & SUVs, Includes Carry Bag & Gloves

These cables are incredible! The weight, somewhere over 10lbs, the quality of the jacketing and the termination of the copper into the clamps are all quite impressive.I would venture to say that the only way they could improve these cables is running the conductor to the teeth, but even then, these cables and the ruggedness of the clips makes that mostly unnecessary. These cables are going to last me for a VERY long time and are TOTALLY worth the $100 investment. As a retired first responder and roadside service technician, having good jumper cables is an essential aspect when responding to my incidents. The one situation I can think of when I needed these is when I jump-started a semi who was sitting on the side of the road partially blocking traffic. Due to the jumper cable sizes, it took two vehicles to generate enough current to turn the engine over fast enough to start it. I know this example is unusual (unless you own a semi) but the statement stands that these are genuinely high duty cables and completely worth the price. I would expect them to be able to start just about anything I connect them to within just a few minutes if not almost instantaneously. Do yourself a favor, buy these jumper cables, save yourself the time, sometimes in unsafe conditions, waiting on the side of the road for the battery to charge to be able to start the stranded car and be on your way.

I bought the Xincol Extra Heavy Duty Booster Cables to have a good heavy duty set of booster cables for jumping cars with dead batteries. We have three cars and there is always one from time to time that needs a jump. These cables are amazing with 1-Gage copper wire size compared to others that have aluminum wiring or are much-much smaller gage copper wiring and they are a full 20 feet long. The 1-Gage copper wire size and the 20 foot length does make them very heavy compared to my other cheap light cables, but its well worth it to get some real extra heavy duty cables. They come with a nice nylon carrying case and there is even include a set of cloth gloves to keep your hands from getting dirty when you are jump starting a car. The battery clamps with these cables have good strong springs and nice teeth for making good contact with battery posts. I haven’t had a chance to use them yet but these are so heady duty that I am sure that they will work better than any cables that I have ever had.

I had a jumper cables before, which was cheaper but short and got hot quickly. After reading customer reviews, I think this is the right one I should have. So far I am very happy with these cables, especially impressed about its fast delivery. They are very well made with high quality, very heavy duty, and complete thick gauge copper wire. Also the clamps are very strong, which work well for side posts and top posts. So if you want the best, these are them.By the way, 20 foot cable length will allow you to go battery-to-battery in varied situations and saved me a lot of hassle. I love it.

These cables are in no way "1 Gauge" as they are advertised.The insulation is impressively thick, and you think you are getting the "real deal", but the actual copper conductor wire inside the cable is small (appx. 0.22 in dia)...less than 2 gauge . (See photo #2 where I compare to actual 2 gauge cable from Lowe's) Lowe's 2 gauge copper measures about 0.277" in diameter while the copper in the XINCOL cables is about 0.22in dia. Thus, these cables are NOT 1 Gauge as they advertise. Gauge charts would indicate the actual AWG for the XINCOL cables is more like 3 gauge!So, don't be fooled by the thick insulation. You'd probably be as well of with a set of jumpers from Walmart costing $25.Also, both the lugs connecting the cables to the clamps, and the clamps themselves are made of rather thin copper plated steel (see photo 3). This construction further will reduce the effective amperage capacity of the cables. For $100 one would expect at least copper lugs and clamps!Bottom line: XINCOL cables look impressive but the quality is only "skin-deep"!

These are great cables if you can not get the jump vehicles close to each other. If the vehicle used to jump does not have a high output alternator, you will be in for a 10 minute or more jump. It will take that long to transfer the energy into the dead battery! I am thinking about shorting my cables? The cables are great, no heating up, they are just too long to carry the amperage. The clamps are OK, however they could be heavier. The clamp handle covers are the biggest short fall of the whole thing!! They do not stay on, after one use I had to use zip ties to secure them! Thinking about about trying an adhesive?

UPDATE: I reached out to the seller and had a good interaction. They were kind and responsive, and ultimately took quick steps to resolve the issue for me.The good:They are flexible, they measure 20' 4", they do use pure copper stranded wire (not copper clad aluminum), and the clamps are decent. The insulation is thick and tough.The bad:I cut one end off to add my own quick terminals. I found the conductors are nowhere close to advertised 1 AWG.American Wire Gauge spec for "1 gauge" is a diameter of 0.289"Carefully using calipers, and being generous, I measured less than 0.2"I was also able to slip *all* of the wire into a 6 AWG ring terminal!So these are likely closer to 4 AWG.This can make a difference, especially on long cables.Voltage drop at 350 amps, 12 volts, and 20' length:With 1 AWG: 15%With 4 AWG: 29%These cables look and feel heavy duty, but the specs are incorrect at the time of this writing.I'm sure they work fine for batteries that are just a little low. And if you have a good battery and the time to wait, you can use these to simply charge one battery from another, but that is not jump starting.