Jump Leads & Jumper Cables

Conductor material

• Copper - can carry approximately 1.3 times more current than aluminium at a comparable diameter and is significantly more resistant to breakage.
• Copper-coated aluminium - affordable, has about 70% of pure copper carrying capacity and is relatively easy to break.

So, what size do I need to start?

Clamps

• Without insulation - cheaper, but less experienced users can easily cause a short circuit.
• Insulated - provide better protection against short-circuits, but make the clamping process slightly harder and come with a higher price tag.

Does pushing the car help?

Pushing is recommended only for older cars. It’s not suitable for cars with advanced catalysts and fuel injection, as the catalytic converter would receive unburned fuel, which could destroy the engine after the car finally starts. It's also bad for timing belt engines, as it can damage the belt or change the position of the valves and pistons.