Feature: 1. Versatile Compatibility: This portable car jump starter is designed to start vehicles with engine displacements up to 3.5L. It provides a reliable power source to start a wide range of cars, making it suitable for most compact and mid-sized vehicles. 2. Precautions for Optimal Performance: To ensure the best performance, it is recommended to follow a few simple steps before using the multifunctional power bank. Upon receiving the product, open the flashlight mode to discharge any residual power. Then, charge the jump starter for at least 4 hours before attempting to start your vehicle. This process helps optimize the jump starter's lifespan by eliminating any internal virtual power. 3. Smart Features: The air compressor incorporates smart features to protect both the device and your vehicle. It is advised to start the car with at least 60% battery or three bars of power. Avoid continuous ignition attempts or holding the key for too long between startup attempts. Allow a 30-second interval between each start. Additionally, ensure correct polarity and avoid short-circuiting the clamps. 4. Multi-Functionality: 5. Convenient and Easy to Use: Starting your car with this car booster charger is a simple process. Insert the clamps into the power start port, ensuring a minimum of two power bars are displayed. Attach the red clamp (+) to the positive terminal and the black clamp (-) to the negative terminal. Return to the car, insert the key, turn on the ignition, and start the vehicle. Once the car starts successfully, remove the clamps within 30 seconds. Specification: Origin: Mainland China Fast Charge: None Material: ABS Size: 163x83x28mm/6.42x3.27x1.1 inch Capacity: 20000mAh Type-c input: 5V/1A USB output: 5V/2A EC5 output: 12V Emergency light: Support Operating temperature: between -20 degrees and 60 degrees Applicable models: 12V petrol car Product colour (optional): black/red