FJC 45229 LED Light Bulb Cable 16 ft 500A 6Ga

Heavy-Duty 500A Jump Cable

The FJC 45229 is a 6-gauge cable rated for 500 amps, built to deliver strong current for jump-starting vehicles with larger engines. Its 16-foot length gives ample reach between batteries, while the integrated LED bulb on the clamp aids connection in low light. It suits owners of trucks, SUVs or equipment needing robust starting power.

6-Gauge 500A Practical Limit

At 6-gauge thickness the cable safely carries up to 500 amps for short cranking cycles; sustained loads beyond that rating will overheat the copper. The 16-foot run adds resistance, so voltage drop becomes noticeable on very high draws. Clamp jaws must grip clean, bare terminals — corrosion or loose contact defeats the rating.

Handles Large Engines, Not Continuous Loads

The combination comfortably starts V8 diesels and heavy machinery batteries in normal temperatures. It runs out of headroom on severely discharged banks in sub-zero conditions or when used as a permanent power feed. Buyers needing longer reach or continuous high-current duty should look elsewhere.