This product is an emergency starting power supply for 12V gasoline vehicles. It can help emergency starting when the battery is out of power. Not all vehicles can be started. It depends on the size of the vehicle's displacement. This style is suitable for small displacement (below 2.0). gasoline vehicles), and some vehicles cannot be started even if the system itself is faulty. Notes on startup: 1. Do not start continuously. The startup time cannot exceed 5 seconds. If the startup fails once, you need to wait 30 seconds to start again! 2. The new machine has virtual power and cannot be used directly. Please discharge it first and then use it fully (keep more than 75% of the power). Discharge and charge it at least once a month. 3. When charging, keep away from flammable items such as sofas and curtains. When fully charged, unplug the charging port in time. 4. Please store the product in a cool and ventilated place, away from flammable and explosive materials, and do not store in the sun or high temperature. 5. Do not disassemble the main unit by yourself, please keep it out of the reach of children to avoid safety accidents. Specification: Peak current: 400A Battery capacity: 20000mah Charging method: type-c input Input: 5V/2A Product size: about 139*78*24mm Output: 5V/2A Full set weight: about 450g Output: 12V Suitable temperature: -20-60 Starting current: 200A Life: >1000times Universal for multiple models, 12V car emergency start, high rate battery, fast emergency start power It can supply power for electronic products. With a USB output port, it can supply power to electronic products such as mobile phones, mp3, mp4, handheld computers, notebook computers, and car refrigerators. *The main function of this product is for emergency start of the car, and it is only incidental to charge other products. High-brightness emergency lighting, a variety of lighting effect modes, LED long-range, flash, sos rescue lights. Let you calmly face a variety of emergencies. Low temperature startup, high-performance polymer battery core resists -20 cold to 60C high temperature, ensuring normal battery startup after flameout. Thickened and thickened battery clips are safe and do not hurt the car.