Description Please note this note: 1. After receiving the emergency power supply, please charge it. 2. Charge every 3 months, low battery may cause malfunctions. 3. Only occasionally charge the tablet. The efficiency is about 50%. When the last 15% of the emergency power supply is charged, the charging or discharging speed will be very fast. Please don't worry about these issues. This is a characteristic of high-quality lithium batteries, which will not affect product quality and normal use. Peak current: 5000A Starting current: 2500A Car starting output power: 12V USB output 5V/2A Rated value of gas engine: up to 6.0L Working temperature: -20 ℃ -60 ℃ Powerful dual starting power of diesel and steam 6. 0l gasoline vehicle: supports 12V/6.0 displacement and below Why is an emergency power supply needed? 1. Long term standby will deplete the battery; 2. Prepare for long-distance self driving trips; 3. Due to low battery or cold winter weather, your car cannot start. Attention: The red clip and black connector must be connected correctly, incorrect connection may cause an explosion: Connect the red clip to the positive pole of the car battery+ Connect the black clip to the negative pole of the car battery- Detailed information page: Start your vehicle with high capacity Low temperature start