Jumper Cables

Jumper Cables

Nothing stops a commute in its tracks like turning the key and hearing nothing. A dead battery is always an unwelcome surprise, especially during a Canadian winter. Most vehicles are designed to handle cold starts, but batteries can lose their power, and a smooth start isn't always guaranteed. Jumper cables in your truck can rescue you.

Before you commit to a new set of jumper cables, here's a full guide to finding quality cables that meet your specific needs.

What Are Jumper Cables?

Jumper cables, also known as booster cables, consist of two insulated electrical cables with clamps. They jump start a vehicle with a dead battery by transferring power from another vehicle's functional battery. Once the dead vehicle is running, the engine can recharge the battery.

The cables are made of copper or copper-clad aluminum, as well as insulation and alligator clamps on each side. One cable uses red colour-coding to indicate it must connect to the positive terminal of the battery. The other cable is black and must connect to the negative terminal.

What Are The Key Features Of Jumper Cables?

Wire Gauge and Power Transfer

Jumper cables have gauge ratings to indicate how thick the cables are and how much power they can transfer. The lower the gauge, the thicker the wire.

Gauges typically range from 1-gauge (which is best for heavy-duty machinery) to 12-gauge (which is a better option for lower power needs). Most passenger vehicles use 8-gauge cables, while trucks and commercial vehicles require a lower gauge for more power.

Cable Length

Most jumper cables are 10-15 ft. Cables under 10 ft only work if the vehicles are nearly touching. Longer cables, e.g., 25 ft, can make jump starting a breeze in awkward parking situations. Consider where you typically park and drive before committing to a specific length.

Clamp Quality

Solid copper clamps are ideal because they offer the best electrical conductivity and superior quality and durability. Copper-plated clamps with aluminum or steel cores are less durable but more affordable. Look for thick rubber or vinyl grips to lower your risk of electric shocks.

Insulation for Canadian Climate

Heavily insulated cables are less likely to become brittle and snap when uncoiled in Canadian winters, where temperatures regularly drop below -18°C.

How Do I Choose the Right Jumper Cables for My Vehicle?

With these features in mind, here's how to match the right cables to your vehicle.

Compact Cars and Sedans

For most passenger vehicles, 8-gauge cables are a great option. Make sure the cables are vinyl-coated and include copper clamps so you can be confident they'll withstand the coldest of temperatures.

Trucks, SUVs, and Larger Vehicles

Choose 6-gauge or 4-gauge cables for more cranking power, since larger engines need more electrical current to boost the battery and get the engine back up and running.

Heavy-Duty and Commercial Vehicles

Provide the maximum power transfer by selecting 2-gauge. The larger cables minimize voltage drop, meaning as much power as possible can reach the dead battery.

How Do I Properly Store and Maintain Jumper Cables?

Improper storage creates a unique set of safety risks.

• Store your cables in a carrying pouch to prevent tangling, keep them dry and clean, and inspect clamps regularly for wear or corrosion.
• Check the insulation for cracks or brittleness and always replace cables if copper plating has rubbed off.
• To reduce your risk of electric shock, never use cables that appear damaged or worn.

Key Safety Reminders

Keep yourself and others safe by following the proper connection sequence to safely boost your car battery.

• Never attempt to boost a frozen battery because of the heightened risk of explosion.
• Make sure your clamps have thick grips to prevent electrocution.
• Always wear gloves when handling the cables in winter conditions.
• Keep cables away from moving engine parts.

Safety guidelines exist to keep you safe. Ensure you follow them.

Why Should I Keep Jumper Cables in My Vehicle?

Low temperatures can take a toll on car batteries. Your battery can lose up to 60% capacity at -18°C, so dead batteries are common in winter.

This makes jumper cables a necessity in your winter emergency kit. They're light, require little maintenance, and are an affordable tool for extra peace of mind. Not to mention, unlike a booster pack or jump starter, they don't require charging and are always ready to go.

Don't wait for a dead battery before getting prepared. For questions about which jumper cables are best for you or other battery maintenance support, visit your local NAPA Auto Parts store to speak with one of our automotive experts. You can also browse our wide selection of battery charging and starting equipment online at NAPA Canada.