Copper vs Aluminum Jumper Cables: Which One Should You Buy?

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Below: what copper clad aluminum means in these listings, why gauge and length decide the buy, and four cables ranked by what each listing states.

Copper vs aluminum jumper cables: what the listings actually use

Three of the four listings name their conductor. The Energizer, Noone and ExtreSpo listings all state copper clad aluminum cables. The Goodyear listing states 4 gauge wire but does not name the conductor metal, so treat it as not stated rather than guessing. None of the four claims solid copper anywhere in its title, bullets or spec table. That makes the copper vs aluminum debate, for this shelf of cables, a debate about copper clad aluminum against an unstated conductor: the listings have already made the material choice for you.

Why the listings lean on copper clad aluminum

Each listing that names copper clad aluminum pairs it with a cold-weather claim. The Energizer listing says its copper clad aluminum cables remain flexible even at minus 40 C. The Noone listing claims superb conductivity and says its copper clad aluminum conductors work from minus 40 F to 140 F. The ExtreSpo listing says high density copper clad aluminum gives excellent electrical conductivity and stays flexible in cold winters, from minus 40 F to 140 F. Those are the makers’ claims, in their words: flexibility in the cold and solid conductivity, without the weight and cost of solid copper.

Gauge and length decide the buy

Clamps matter too, though the listings say less about them. The Energizer listing names a strong spring and a comfortable handle; the ExtreSpo listing describes a patented clip with solid serrated teeth and a spring; the Noone listing claims a super strong bite with tight crimping. Serrated teeth bite through corrosion on the terminal, which is where many jump starts actually fail.

With the conductor settled, compare what varies. Gauge: the Energizer lists 2 gauge, the thickest stated here; the Goodyear and ExtreSpo list 4 gauge; the Noone lists no gauge but states 200A peak current. Length: the Energizer and ExtreSpo list 20 ft, the Goodyear 16 ft, and the Noone 10 ft. Longer reaches across a parking lot without repositioning cars; thicker gauge carries more current. The ExtreSpo also states 600A and UL listing, and the Noone states a 2-year products service. Match gauge and length to your vehicles first, then weigh the extras.

The gear: four jumper cables, ranked

ExtreSpo 4-gauge 20 ft. The most complete kit here: 4 gauge, 20 ft cables the listing rates to 600A, copper clad aluminum, UL listed, working from minus 40 F to 140 F, with a carry bag, gloves and brushes included. The listing names 6.0 L gas and 3.0 L diesel engines on 12V vehicles. It lists 5.08 lb.

Noone 10 ft. The compact pick: 10 ft cables supporting 200A peak current for 12 and 24V batteries, in vehicles with up to 3.0 L gas engines. Copper clad aluminum conductors rated from minus 40 F to 140 F, rubber covered for insulation, at 1.7 lb. The listing provides a 2-year products service, the only stated service term here.

Energizer 2-gauge 20 ft. The thickest stated wire here: 2 gauge, 20 ft copper clad aluminum cables that the listing says stay flexible even at minus 40 C, with a thick vinyl coating against rust and corrosion and a high-grade travel bag. It lists 7.02 lb and names trucks, SUVs and cars of all sizes.

Goodyear 4-gauge 16 ft. A 4 gauge, 16 ft set with premium PVC insulation the listing says stays flexible in extreme temperatures, plus a durable carrying case. It lists 4.66 lb and universal fit for cars, trucks and SUVs. The conductor metal is not stated, which is the gap in an otherwise complete listing.

Jump-start safely. Connect the positive clamps first, negative last, and keep the clamps from touching each other or any metal while connected. Work in a ventilated area, keep the cables clear of belts and fans, and wear eye protection: batteries can vent gas and spark. If a battery is cracked, leaking or frozen, do not jump it.

Frequently Asked Questions

Are copper clad aluminum jumper cables good?

Three listings here use them and claim excellent conductivity with cold-weather flexibility down to minus 40 degrees. None of the four listings offers solid copper, so copper clad aluminum is what this shelf of cables actually sells.

What gauge jumper cables do I need?

These listings state 2 gauge (Energizer) and 4 gauge (Goodyear, ExtreSpo); the Noone states 200A peak instead of a gauge. Thicker gauge carries more current; match it to your engine size.

How long should jumper cables be?

These run 10 ft (Noone), 16 ft (Goodyear) and 20 ft (Energizer, ExtreSpo). Longer cables reach without moving the cars; 20 ft is the most forgiving.

Are UL listed jumper cables better?

UL listing is a third-party safety mark, and the ExtreSpo is the only one here that states it. It is a real differentiator when the other specs are close.

Can I use these on a diesel truck?

The ExtreSpo listing names 3.0 L diesel engines on 12V vehicles. The Noone supports 12 and 24V batteries in vehicles with up to 3.0 L gas engines. Check your engine against the listing before buying.

Do any of these have a warranty?

The Noone listing provides a 2-year products service. The other three listings state no warranty term.

Related: the best jump starter for SUV, AGM vs gel battery charger, power station vs jump starter and the best battery maintainer for trucks.