CarCareTruth Score
Decent.
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Prices may varyThis product ranks #9 of 12 in Jumper Cables.Three above it ↓
Last reviewed May 26, 2026
TL;DR Stated 4 AWG CCA (copper-clad aluminum) cable · conductor material explicitly disclosed, not misrepresented. No independent gauge measurement exists, and the listed weight (5.47 lbs for 20 ft) runs lighter than theoretical 4 AWG CCA, a pattern common in value-tier cables where conductor is sized below the stated AWG. UL-Listed. Manufacturer rates flexibility to -13°F with no independent community confirmation at that temperature. Copper-toothed steel-jaw clamps fit both top-post and side-terminal batteries. Right pick for a passenger car or SUV owner who wants an affordable, infrequently used emergency cable at a low price point; not the pick for regular cold-climate use or heavy-duty cranking.
The CARTMAN BC0420K claims 4 AWG at 20 ft with CCA conductor · explicitly disclosed in the product listing, which separates it from cables that say "copper" without qualification. No Project Farm or teardown gauge measurement has been published for this SKU. The cable weighs 5.47 lbs for 20 ft; theoretical CCA at true 4 AWG is approximately 8.9 lbs for that length, suggesting the actual conductor cross-section may be smaller than stated. Clamp jaws are copper-toothed steel with a patented double-contact tongue for dual grip; both side-terminal and top-post batteries are accommodated. Insulation is cold-rated to -13°F per manufacturer claim. A drawstring carry bag is included. The cable is passive · no inline reverse-polarity electronics.
Right pick for a passenger-car or compact-SUV owner who needs an emergency trunk cable and uses it infrequently. The 20 ft length reaches most side-by-side or nose-to-nose scenarios in standard parking lots, the UL Listing provides independent safety verification, and a large, broadly satisfied owner base on Amazon points to acceptable real-world cranking performance for the vehicle class it targets. Skip if the intended use is a cold-winter climate where flexibility below -13°F matters · the manufacturer cold rating is unconfirmed by community reports at named sub-zero temperatures. Also skip if the vehicle is a heavy-duty diesel, full-size pickup with a large V8, or RV · a verified pure-copper 2 AWG cable at 25 ft or longer is the appropriate tool for sustained 400-amp cranking loads.
Passive electrical conductor with rubber-jacketed insulation · no chemical exposure pathway in normal use. Passive cable with no reverse-polarity indicator or inline protection electronics. CCA conductor recycles poorly · the copper coating and aluminum core are difficult to separate at most scrap facilities, making disposal less clean than solid copper; insulation is not routinely recycled. The 5·8 year community-expected lifespan for CCA/PVC-class cables reflects real-world degradation from trunk temperature cycling and insulation hardening at bend points over time.
CARTMAN explicitly discloses CCA (copper-clad aluminum) construction in the product listing. CCA has higher electrical resistance than solid copper at the same stated gauge, which affects sustained current delivery on larger engines. The UL Listing verifies the cable meets electrical-safety standards, but does not independently confirm the stated AWG.
The manufacturer rates the insulation to -13°F (-25°C), which covers most cold-weather climates. No independent community evidence with named sub-zero temperatures was found at the time of this review · the -13°F rating is a manufacturer claim.
Yes · UL Listing appears in the product name and is independently verified. UL Listing confirms the product meets electrical safety standards for its rated application; it does not independently verify the stated AWG gauge.
The brand targets passenger cars, SUVs, cargo vans, and mid-size pickup trucks. The 20 ft length is well-suited for side-by-side and nose-to-nose jump scenarios in standard parking lots. For heavy-duty diesels or commercial trucks, a heavier-gauge cable (2 AWG or larger) is a better match for sustained high-amperage cranking.
Yes · a drawstring carry bag is included. The bag is functional for storage and trunk-toss use, though it is a basic drawstring design rather than a zippered nylon case.
Marketing copy from CARTMAN, via Amazon. Not editorial.
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