4 AWG Gauge Red + Black Pure Copper Battery Inverter Cables Solar, RV, Car, Boat 9 in 3/8 in Lugs

I got these a while back&finally got to put them to use in our RV solar set up. These work great!

the cables work, but everyone knows the cables for solar battery bank must be identical size and length no matter what and this is what I get different sizes of the cable, where the quality control here? 3 star because if I have to ship back this cable I had to wait for some days to get back, making my tiny solar project to be delayed more time, using a cable like this, in the long run, gonna unbalanced the battery bank. not happy.

Works as needed.

Worked as needed.

Exactly as requested, and unlike some items that you order online and show up not exactly like the picture or whatever, these were sweet, right down to the heat shrink on the terminals.

I used these cables in conjunction with one other to improve my charging and grounds on my car. I ran the red directly from the Alternator to the Battery, I ran the black from the battery to the firewall ground points, and I got a 2 gauge really cheap, and ran that from the engine block to the firewall ground (to replace a broken engine ground that was 14 guage, and well that 2 gauge was over kill, but very awesomely priced at 4 dollars.) Now, everything works better, is brighter, engine runs smoother (engine ground improvements give accurate info to computer now.) I did not do this for a sound system, but apparently this is called, The Big Three wherein this helps with power distrobution for higher amp settings. I chose 4 gauge because 5 gauge was rated for my alternator, but OEM had two 12 gauge wires running off the alternator instead. (My last car of the same year and make had a party with those wires, causing a complete meltdown. Old wires = Corrosion + compromised insulation adds resistance + poor shielding = death.) So this is to guarantee a long life of the electric system.

Used these to replace the negative battery lead and then splice the positive battery lead in my John Deere 790 tractor that had corroded and oxidized to the point that they prohibited the tractor to start, even with a brand new battery or while attempting to jump it. Im a big fan that these use lugs and have no exposed wire either.

Fit was exact and flexibility aided in getting them installed for solar application from batteries to the dc-ac inverter.

No complaints, exactly whats advertised. Easily connected to my solar set up and powering it in my minivan camper.

Windy Nation has always provided a quality product at a fair price.