4 Gauge Battery Cable, 10FT Red + 10FT Black 4 AWG Pure Copper Wire Welding Cable, for Automotive, Battery, Solar and Generator, Standard USA OFC Wire

Greetings, electrical enthusiasts and camper connoisseurs! It’s 11:50 AM PDT on Tuesday, May 20, 2025, and I’ve just survived the electrifying circus of installing a 300 AH lithium battery into my Lance overhead camper using this 6 AWG battery cable set (20FT red + 20FT black, pure copper, Standard USA OFC wire). With 50+ units sold last month, this cable has apparently become the duct tape of the off-grid world, and I’m here to deliver a somewhat technical breakdown of my adventure. Spoiler: My camper’s now a power beast, and I’ve got some singed eyebrows to prove it. The Mission: Upgrading to Lithium Glory My Lance overhead camper, a cozy fortress on wheels, was limping along with a pair of Group 24 AGM batteries—200 AH total, with a measly 100 AH usable thanks to the 50% discharge ceiling. For a guy running a 1500W inverter, a 12V fridge, and a dream of off-grid bliss, this was like powering a spaceship with a potato battery. Enter the 300 AH LiFePO4 (LiTime brand, 200A BMS, 3840 Wh capacity), a sleek 63-lb titan promising 270 AH of usable juice (90% discharge, take that, AGMs!). My plan: wire it to a 40A DC-DC charger off my truck’s 160A alternator, add a 600W solar array (via an MPPT controller), and laugh in the face of boondocking limits. Cue the cables. The Cable Specs: A Nerd’s Dream with a Twist This 6 AWG cable set—20 feet of red and 20 feet of black—boasts pure copper construction with an oxygen-free copper (OFC) core, rated for automotive, welding, battery, solar, and generator use. At 6 AWG, it handles 50A continuous at 20°C with a 0.5% voltage drop over 20 feet (per NEC tables, ~0.08 ohms/1000ft resistance), dropping to 40A at 60°C ambient—perfect for my 30A charger load. The insulation is thick (likely 90°C-rated PVC), and the stranded design (hundreds of tiny wires) ensures flexibility, though it’s a beast to uncoil without turning into a human pretzel. I chose 20FT lengths to span the 15-foot run from battery to charger/inverter, leaving slack for terminal lugs and a tidy loop. The red-black combo? Pure aesthetics—my camper now looks like it’s ready for a power-up montage. But let’s be real: uncoiling these suckers was like wrestling an anaconda on a caffeine binge. I nearly tripped over the red one, which is now nicknamed “The Tripwire of Doom.” Installation: A Technical Comedy Show Installation began with a terminal dance. I crimped 3/8” lugs onto the ends using a 6-ton hydraulic crimper (50 kN force, don’t skimp here—cheap crimps fail at 30A), torquing them to 15 ft-lbs per ABYC standards. The 300 AH battery slid into its compartment, and I routed the cables through a 1-inch conduit, securing with zip ties every 12 inches to avoid chafing (vibration is the enemy at 60 mph). The positive cable got a 50A fuse 6 inches from the battery—safety first, unless you enjoy fireworks. Here’s where the humor hit. While connecting the inverter (Edecoa 3000W), I cross-threaded a lug—yes, me, the “precision engineer”—and sparked a 120A surge when the BMS cut in. The cable held like a champ, but my heart rate hit 180 bpm. After a reset and a sheepish re-crimp, the system stabilized at 13.6V under a 20A load (fridge + lights), with a 0.1V drop—well within the 3% limit (0.4V max at 12V nominal). The solar array kicked in at 50V open-circuit, feeding 15A into the MPPT, and I’m now at 98% SOC after a day’s charge. Success, with a side of sweat! Performance: Power Unleashed with Laughs This setup is a game-changer. The 300 AH battery ran my 1200W microwave for 15 minutes, dropping from 100% to 92% (120A peak, 80A sustained—BMS hummed happily). A 7-day boondock test showed 200Wh daily use (fridge + LED lights), leaving 80% capacity—enough for a week, or a Netflix binge if I skip the popcorn. The 6 AWG cables handled the 30A charge current with a 0.15°C temperature rise (measured with an IR thermometer), staying cool under pressure. Weight savings? 69 lbs vs. the old AGMs—my camper’s now a lean, mean, power machine. The funny bit? I misjudged the slack and now have a 3-foot red cable loop dangling like a power tail. My dog thinks it’s a chew toy, and I’m one tug away from a DIY arc welder. Also, the black cable’s label rubbed off mid-install, so I’m labeling it with a Sharpie—high-tech, right? Durability and Quirks After a week, the insulation shows no cracking, and the copper’s oxidation is nil (thanks, OFC!). The 20FT length is overkill for my 15FT run, but it’s better than splicing—resistance jumps 20% with a bad joint. At an implied $0.50/FT (guessing from the 50+ sales), it’s a steal, though I’d pay extra for pre-lugged options next time. The flexibility is great, but it’s a storage nightmare—my garage now looks like a cable octopus attacked. Pros • Handles 50A with aplomb, perfect for 30A DC-DC loads • Pure copper OFC ensures low resistance (0.491 ohms/1000FT) • Durable insulation survives camper vibrations • Red-black combo adds flair to my power setup Cons • Uncoiling is a wrestling match with fate • Extra length = dangling hazards (hello, dog toy) • Label wear-off requires DIY marking • Pricey if you don’t need 20FT (but who’s counting?) Final Verdict This 6 AWG, 20FT red + 20FT black battery cable set turned my Lance camper’s electrical upgrade into a technical triumph with a hilarious twist. Paired with my 300 AH LiFePO4, it’s delivering 270 AH of usable power, outclassing my old AGMs by a mile. The install was a rollercoaster—sparks, trips, and all—but the cables held firm, keeping voltage drop under 0.2V at 30A. If you’re wiring a camper and can handle the uncoiling chaos, this is your ticket to off-grid glory. Just watch your step—or your dog might rewire your dreams! P.S. Order now, or I’ll send my cable loop to trip you next!

Rubberized fairly thick insulation, flexible, core is full AWG size, secure crimp (hydraulic) in appropriate size lugs. Would buy again.

23SEP2025 == 6AWG 'Welding' Cable 10'Red+10'Blk $1.45 per foot. Seller: Shirbly. Looked like a great deal, so I took a chance. Cables are excellent quality !!! All copper NOT tinned. Durable, thick and VERY flexible silicone insulation. Got an inch and a half extra length on both the red and black cables (Thanks!!) Bare end cables, by the way. Cable specs ARE PRINTED all through the length of the cables. Thank you Shirbly ! Thanks Amazon and employees/drivers ! !

Yes, it's a little expensive, but definitely worth the price. This is great quality cable with extremely nice jacketing. I used a couple short of runs, of this cable, between my deep cycle battery and my power inverter, and couldn't be happier with it. Stripping was easy, crimpling was a breeze. The jacket / insulation is silky smooth, the correct thickness, and nice and flexible. The stranded copper cable is the correct size / gauge, as spec'd. Will definitely order more as I expand my home's solar backup system.

Awesome cable very high-quality pure copper and easy to flex and route lugs are easy to install using a hammer crimper very heavy duty also used for connecting a new LiTime sing wave inverter

Using to power an inverter in an RV. Very flexible and has thick insulation. Correct size terminals fit as they should and no issues with crimps. Should be more than adequate for the system. Seem to be quality cables.

Used these to extend my welder leads. True 1 AWG, real rubber insulation, and actually copper. Pretty good wire.

Very good quality wire I ended up using this in my 72 V go kart and it worked amazing no problems whatsoever

Llego rápido y de muy buena calidad

Fantastic wire. Pure copper. Very flexible.

as described

Great, heavy duty, pure copper. Top notch.

I got the 6 Gauge Battery Cable for my Victron Orion XS 50. This is the correct size for 5m or under for the DC-DC chargers. Excellent cable very easy to work with being flexible and would buy again.