Terminal extender

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A terminal block is mainly used to transfer power when the car battery is dead. It charges the battery and brings it into working condition.

Clamp extender for car
Some car enthusiasts who do not have wires remove their batteries, install accumulators or other donor devices from other cars in their place, after charging which the engine starts working. After that, it is possible to install a standard battery, but this is a very dangerous operation for the following reasons:

If the car's generator produces an increased voltage at the moment the wires are connected to the running engine, an abnormal voltage is supplied to all the car's electrical devices, which can damage electronic control units, lighting, and other devices;
Connecting the terminals on the battery can cause a short circuit;
Battery disconnection and connection operations increase the likelihood of changing the battery polarity, which is very dangerous;
Removing the terminals can cause problems with immobilizer, alarm, and car radio settings.

How to choose the right extension cord

It should be clear that poor quality wires are likely to fail to deliver sufficient current and do not allow good contact between the clamps on the battery terminals, which ultimately leads to burning of the metal of the clamps.

In addition, for motors of different capacities, a minimum voltage is required, which directly affects the cross-sectional area. Therefore, when choosing a terminal extender, the following criteria should be considered:

The resistance depends on the diameter of the cable. A wire that is too thin will not be enough to start the engine. The minimum is 6 mm, which is suitable for cars with small engines (up to 1.5 liters), and the best option would be a version with a diameter of 9-12 mm.
The length of the wire also affects durability. It is advisable to choose a cable between 2.5-4 meters long, which is not too short to reach another car, and not so long that it negatively affects the transfer of power from one battery to another.
Wire and clamp material - they should be made of copper, as it has the lowest resistance compared to other materials. The protection should be made of silicone or frost-resistant rubber to withstand environmental influences.
Temperature changes can cause the cable to change its flexibility, so attention should be paid to the strength of the insulation. The terminals should be at least copper-plated.
The cable connection to the clamps must be very well-made, as this is usually the most vulnerable place. A poor connection will cause voltage loss, which is not good for cars.
5. Two-color wires - necessary for the convenience of connection and to ensure the safety of drivers, so as not to confuse the connection order. Traditionally, the positive wire is red, and the negative is black.

Which terminal block extender is better?

Let's consider several brands that are distinguished by their consistently high product quality. In terms of price-quality ratio, they are leaders in the automotive market.

AVS and AIRLINE (China);
Heyner and Alca (Germany);
Lampa (Italy);
Phoenix and Auto Electric (Russia).

Finally, we would like to remind you that the largest selection of automotive equipment is available at Isurve. Buy with a card and receive discounts, or use Isurve installments, and home delivery of all purchases is free!