Which pair of jump leads should I choose to start a car?
When it comes to choosing jump leads, it's important to choose the right size to suit your specific needs. At Biltema, you'll find a wide range of reliable jump leads in different sizes. Note that with jump leads, it's not only the lengths that matter, but also the wire cross-section. At Biltema, we have lengths ranging from 2.5 to 4.5 meters and wire cross-section sizes from 10 mm² to 35 mm². So we offer great flexibility for different usage scenarios.
The length of the cable determines how easy it is to connect two vehicles, which can be important in tight parking areas or emergency situations. A longer cable offers more flexibility, but can be more difficult to handle.
The wire cross-section is important for how much current the cable can transfer safely. A thicker cable (higher mm²) can handle larger amounts of current and is better suited for larger vehicles with more powerful car batteries. The choice of jump leads at Biltema should therefore be based on a combination of these factors to ensure you get a product that meets your needs.
The red jump lead and the black lead
A set of jump leads always includes a red lead and a black lead. The red cable is used to connect the positive (+) poles between the two car batteries, while the black cable connects the negative (-) poles. This colour coding helps to ensure proper connection and prevent short circuits or damage to the vehicle's electrical systems. When used correctly, these cables enable a safe and efficient transfer of power from the live battery to the flat battery. When done, remove them in reverse order.
Charge the battery after jump-starting
After the power transfer, it's a good idea to take a drive for at least 30 minutes to give the battery time to recharge. This reduces the risk that you'll be in a situation where you need to jump-start your car again.
Then, make sure to charge the battery fully with an appropriate battery charger.
Be aware that general problems starting the car may indicate that it's time to change the dead battery. It could also be a sign that the car's alternator is not working properly or that lights in the cabin or trunk have been inadvertently left on.
Do you need to shop more for your car?
Biltema offers much more than just jumper cables for your vehicle. Our extensive range of automotive electrical system products covers everything you need, from switches for your car to cable connectors for the electrical system.
We also have advanced solutions like solar panels that can contribute to a more sustainable energy supply for your vehicle, as well as a range of meters to help you keep an eye on your vehicle's vital functions. Whatever your needs, Biltema has the right products to maintain and improve your vehicle's electrical system so you can drive safely and efficiently.
FAQ
How do I use jump leads?
Turn off both cars. Connect red clamps to the positive terminals on each battery. Attach one black clamp to the live car’s negative terminal, and the other to a ground point on the dead car. Start the working car, then the other car with the discharged battery.
Is it safe to use jump leads?
Yes, jumper cables are safe when used properly. Always follow the correct connection steps and ensure the cables are suitable for your vehicle type. Incorrect use can cause electrical damage or short circuits. Refer to the vehicle manual and safety guidelines before attempting a jumpstart.
How do I store my jump leads correctly?
Store jumper cables in a dry, clean area — preferably in your car. Coil them loosely to prevent kinks or internal wire damage. Use a storage bag if possible, and keep them somewhere easily accessible in case of emergency.
