Specifications: Type: Portable Car Jump Starter Power Material: Plastic Color: Black Battery Capacity: 20000mAh Dimensions: 14 x 7.8 x 1.5cm / 5.51x 3.07 x 0.5inch Use life: 3-5Years USB Interface Output: 5V/2A Input voltage charging current: 15V/1A Starting current: 200A Peak current(3S): 400A Charge time: approximately 5-6 hours Operating temperature: -4580C Support for: Emergency starting of 12V car Compatible with: charging and discharging of branded cell phones, for PSP, for MP3/MP4,for laptop, for PDA, for notebooks, for car refrigerator and so on For jump start of 12V vehicle: 1. Make sure that the number of indicator light is not less than 3 2. Connect the red battery clamp of jumper cable to the vehicle's positive (+) battery terminal and connect the black battery clamp of jumper cable to the vehicle's negative (-) battery terminal. 3. Plug the cord of jumper cable into the jump start socket 4. Start the vehicle 5. When the vehicle starts, remove jumper cable from Jump Starter and disconnect red and black clamps to the vehicle battery terminals within 30 seconds 6. Leave the vehicle's engine running Package included: 1x Car Jump Starter Power Bank 1 x start clip 1 x one for three lines 1 x packing box