A battery booster is a device that replaces a discharged car battery to start the vehicle. It is an autonomous starter which operates thanks to its own internal battery, without needing to be connected to the mains.

What is a battery booster?

The battery booster is specially designed to quickly start a car whose battery is discharged. It should not be confused with the battery charger which is designed for slow, full and low-power charging.

A battery booster is only used to deliver a lot of power in a short period of time, which allows you to start your engine. Unlike a battery charger, it does not need to be plugged in to work.

Be careful: the battery booster is only used to restart your vehicle: it does not recharge your battery. Once your car starts, the alternator takes over and recharges your battery while you drive.

Instead of a battery booster, it is possible to use booster cables. But the battery booster is a standalone starter. Not only does it not need to be connected to a power outlet, but you also don’t need another working car to connect the jumper cables to.

Good to know: if you are driving a recent car, prefer the battery booster to the cable method to start your vehicle. With the alligator clip technique, you risk an overload which would fry certain electronic components of your car, or even of the one that helps you out. This could cost you a lot of money in repairs!

A battery booster works thanks to its own internal battery, which is either lithium. Today, there are more lithium boosters. They are lighter and smaller, but the lead acid battery booster is often multifunctional and usually offers a pressure gauge, compressor, lamp or other accessories .lead or

How to use a battery booster?

The battery booster is very easy to use. It does not need to be connected to the mains, only to your car’s battery. You will then just have to turn it on to be able to start your car in the next few moments. However, remember to recharge your battery booster after use.

Necessary material :

  • A battery booster
  • Your car battery

Step 1: Access the Battery

Turn off the ignition and turn off all electrical or electronic components in your car, such as your headlights. Open the vehicle’s hood and locate your battery, which is located on top of the engine block.

Step 2: Plug in the battery booster

Connect the red cable from the battery booster to the positive (+) terminal of the battery and the black cable to the negative (-) terminal using the clamps located at the ends of both cables. Turn on the battery booster and let the battery charge for a few minutes.

Try to start your engine. If you fail, wait a few minutes to try again. When you have started your vehicle, unplug the black clip then the red one and put away your battery booster.

Step 3: Recharge the Battery Booster

The battery booster never needs to be plugged into the mains to operate, but it has its own internal battery which needs to be recharged regularly. To maintain its charge level in case your battery breaks down again, remember to recharge your battery booster after using it.

Where to find a battery booster?

You can buy a battery booster in auto center, in certain supermarkets.stores; automobile or DIY or even in specialized sites with an automobile department, on

The price of a battery booster varies depending on the model and ranges from 20 to 100 € approximately. You must choose your battery booster according to the displacement of your vehicle, so that its intensity is sufficient to start the battery.

How to choose a battery booster?

There are many models of battery boosters. So you have to choose it carefully. The first criterion to respect is that of the engine capacity of your car. In fact, the intensity of the booster must be sufficient to start your car by replacing the battery.

Each battery booster indicates its maximum intensity in amps (A) and specifies up to what displacement it can operate. If you do not know the specifications of your vehicle’s engine, consult the manual or search the Internet.

You should choose a battery booster whose maximum current is at least equivalent to your car battery. For example, if your battery has a rating of 700 amps, you should purchase a battery booster with a rating of at least 700 amps: 700, 800, 900, 1000 or above.

The choice of a battery booster also depends on its size. If you have a city car with a small trunk, choose a small battery booster. Lithium battery boosters are generally the smallest and lightest.

Finally, choose your battery booster based on the use you want to make of it. Some boosters offer other features: powerbank function, USB ports, flashlight, compressor, pressure gauge, etc.

If you want to acquire a multifunction tool that also allows you to measure your tire pressure or provide lighting in the event of a breakdown at night , so choose a battery booster offering these features.

How to recharge a battery booster?

The battery booster is a portable device that does not need to be plugged into the mains to use it. But it works thanks to an internal battery that you must recharge regularly. If you have just used your battery booster and it needs to be recharged, you have two solutions for recharging your battery booster:

  • One mains outlet;
  • One cigarette lighter socket.

The first method is the most classic method: simply recharge your battery booster by plugging it into a domestic outlet. The second method involves recharging the booster directly from your vehicle’s cigarette lighter. You can then charge it while riding, but note that the charging time is much longer with this method.

How long does it take to recharge a battery booster?

Depending on the charging method used, the recharge time of a battery booster varies. It also depends on the capacity of the booster and the battery level remaining. On average, allow approximately one to two hours to recharge your battery booster. Using a cigarette lighter socket, however, recharging a battery booster can take up to three hours.

And there you have it, you know everything about the battery booster! You will have understood: it is an essential accessory to avoid getting stuck in the event of a battery failure.

Leave a Reply

Your email address will not be published. Required fields are marked *