How many amps needed to jump start a car

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Experiencing a dead car battery can undoubtedly be a source of frustration for any driver. Whether it's due to inadvertently leaving the lights on overnight, extreme weather conditions draining the battery, or simply the natural progression of a battery reaching the end of its lifespan, the result is the same – a vehicle that won't start when you need it to. In such moments, the solution often lies in jump-starting the car, a process that requires supplying a surge of power to the battery to kick-start the engine back to life. Yet, the question that often arises in these scenarios is: just How many amps needed to jump start a car?

The core component of the car jump starter is the lithium battery. It is different from the lead-acid battery or AGM battery that comes with the car. It uses chemical materials such as Li-Ni-Co-Mn-O inside, and can release more than 1000A current in a very small volume. In the emergency situation of the car lead-acid battery being depleted or damaged, the starting power supply can easily start various types of vehicles by connecting the smart starting line.
Car Jump Starter

Engine Types and Power Requirements

We divide the cars sold on the market into two categories: gasoline and diesel; because the engine principles are different, the current required is also different, and the number of engine cylinders also has a direct impact on the starting current. For the mainstream 2.0L gasoline engine, it requires a current of 400A, and it needs to reach 600A when the engine is at low temperature. 6-cylinder, 8-cylinder, and 12-cylinder engines require the starter to overcome greater friction, and the rated starting current needs to reach 800~1000A. Diesel engines do not have spark plugs. They rely on compression ignition to work, which requires a higher compression ratio. The starter needs to drive a larger current. The mainstream diesel engine 6.0L requires a current of 1000A, and reaches 1500A at low temperatures.

Factors Influencing Starting Current

When choosing a car jump starter, we must consider the actual application environment. The output capacity of the current is related to the capacity of the battery; the larger the capacity, the greater the current output of the battery, and the larger the size of the same starting power supply. It becomes easy to choose a suitable starting power supply according to the fuel type, number of cylinders, displacement, and number of starts of the car. Factors affecting the starting current also include oil viscosity and current temperature; engine oil with better fluidity requires less current and is easier to start the car; at low temperatures, the viscosity of the oil becomes higher, the cylinder wall and crankcase are not fully lubricated, and the current required for starting will become larger. The current of the starting power supply is also related to the output current. When the power is low, the output current will become smaller. We must check the power of the starting power supply frequently and charge it in time to provide power for our car in an emergency.

Additional Features of Car Jump Starters

In addition to being able to start the car, the car jump starter is also designed with other functions. All our models are equipped with USB-A interfaces. The high-end model USB-A supports QC3.0 protocol and 18W fast charging, which can charge mobile phones, cameras, tablets, and other devices. The starting power supply supports USB-C input fast charging, LED lighting, and SOS functions. Thanks to the development of lithium battery technology, the weight of the starting power supply is only 300g. It has an absolute advantage over lead-acid batteries. We can easily store it in the car without taking up space.

Safety and Intelligent Control Systems

The starting power supply has a built-in BMS control chip, which can monitor the battery status, temperature, voltage, and current at all times; BMS can intelligently identify the current status and respond to avoid extreme situations such as overheating, over-discharge, and overcharging of the battery. Our smart starting line also has detection and protection functions; the starting line control module can monitor the current voltage of the car battery, which can prevent the risks caused by misoperation, such as reverse connection of positive and negative poles and reverse charging of the battery.
Car Jump Starter

Emergency Use and Maintenance

The car jump starter escorts our long-distance travel and brings us safety and confidence in extreme situations; its lighting and SOS functions are extremely important. In remote areas, it is difficult to start the car and rescue becomes difficult. The starting power supply can quickly solve this problem. The starting power supply is always on standby and it will have standby power consumption. We need to check its remaining power frequently and keep the starting power supply in the best power state at all times in case of emergency.


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