Starting a Car with a Dead Battery: Entering the Digital Era
2025-07-22 15:23:12
Compact and lightweight, the car emergency starter power supply is only slightly larger than an ordinary power bank, yet it can start a car. What makes this palm-sized "power bank" capable of starting a vehicle? After researching a great deal of information, I’ve compiled the following reference materials:
A car emergency starter power supply is a device that provides short-term starting power to a car when the car battery is dead and unable to start the engine.

Starting a car requires a large amount of current. It must convert limited voltage into a strong current through a relay and supply it to the starter motor in an instant. When the car battery is dead, connecting an emergency starter power supply is equivalent to adding another 12V battery to the existing 12V battery. However, the capacity of a car emergency power supply is limited. Each start attempt should not last too long, and continuous starts without intervals are not allowed, otherwise the power supply will also run out of charge.
Compared with similar products on the market, Shenglan multifunctional starter power supply DK-JS008 has more sufficient current and more powerful functions. It uses a high-rate polymer lithium battery and features a stylish cylindrical design. It is not only a starter power supply and a power bank, but also a flashlight with an excellent grip. It is equipped with 8 protection functions: reverse connection protection, short circuit protection, reverse charge protection, overvoltage protection, undervoltage protection, overcurrent protection, temperature protection, disconnection protection, and timeout protection, fully ensuring our electricity safety.

As a small on-board tool, it has a body size of only 208.55mm * 56mm * 54.2mm and weighs about 440g, which even a child can easily hold! The body is also equipped with a digital screen that displays the remaining power, allowing you to keep track of the power status at any time.
Shenglan multifunctional emergency starter power supply DK-JS008 is suitable for 12V batteries of gasoline and diesel vehicles. It works for gasoline vehicles with a displacement of 6.0 or below and diesel vehicles with a displacement of 4.0 or below. The starter power supply has 800A, with an instantaneous current of 1500A. Equipped with an intelligent chip, it can work normally at temperatures ranging from -20℃ to +60℃, making it a must-have for car owners in northern China and remote areas.
However, there are 3 points to note during use:
It is recommended that the power of the emergency starter power supply be higher than 50% when in use;
If ignition fails, you need to wait more than 30 seconds before attempting to ignite again;
After the vehicle starts successfully, the emergency starter power supply should be unplugged as soon as possible.
In addition to providing a strong emergency starting function, its large capacity also enables it to function as a high-performance power bank. The side of the body is equipped with a USB output interface and a Type-C charging interface to provide emergency charging for consumer electronic products. Among them, the USB interface supports QC3.0 with an 18W output (5V@3A, 9V@2A, 12V@1.5A), enabling fast charging.

Moreover, car breakdowns are often accompanied by dangers, such as being on a busy highway or an uninhabited road at night. The DK-JS008 integrates lighting with three modes: constant light, SOS, and warning, which is convenient for getting out of trouble, seeking help, and giving warnings when the car breaks down.
Shenglan multifunctional emergency starter power supply DK-JS008 is specially designed for 12V battery systems, with an instantaneous current of 1500A. It is applicable to both gasoline and diesel vehicles. It integrates a multifunctional digital display and a three-mode lighting lamp for emergency use. With a built-in battery capacity of 10000mAh and static power consumption management technology, it won’t lose power even when stored for a long time. It is equipped with an EC5 interface and supports QC18W fast charging, making it more than just a starter – it can also charge digital devices in emergencies to keep you connected with the outside world.