How To Use the Car Jump Starter To Jump Start A Vehicle Battery 1. Make sure the battery capacity of the device is above 50%. 2. Plug the jumper cables into the barrel socket of the device and connect the jumper cable clamps to the drained battery of the vehicle. WARNING: Always connect the BLACK clamp to the negative ( - ) terminal of the car battery first, then connect the RED clamp to the positive ( + ) terminal. Do not touch the RED and BLACK cable clamps together or connect both cable clamps to the same piece of metal to prevent personal physical injury and damage to the device and/or the vehicle. 3. Now attempt to crank start the engine. WARNING: If the engine does not start immediately on the first try, disconnect the jumper cables from the car battery and wait at least 10 seconds before reconnecting the jumper cables to the car battery. 4. Once the engine has successfully started, disconnect the jumper cable clamps immediately. PLEASE KEEP AWAY FROM CHILDREN AT ALL TIMES ! Specifications: Size: 105*48*18 mm Weight: 800g Capacity: 15000mAh Input: 15V/1A Jumper Output: 12V USB Output: 5V/3A, 5V/1A Start Current: 500A Peak Current: 600A Flashlight Mode: Ultra bright,  SOS Temps Range: -40℃ ~ 80℃ Full Charging Time: about 4 hours Box Contents: 1x Jump Starter 1x Smart jumper cables with Clamps
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