1. Anti-short circuit protection: Red clip and black clip can be connected when the power is on without causing damage 2. Over-discharge protection: Low voltage start; LED flashes at 1Hz frequency when voltage reaches 10.5V 3. Reverse charge protection: After vehicle engine starts, reverse charge current is less than 1A 4. Reverse polarity protection: No damage occurs if clamps are connected in reverse to battery terminals 5. High temperature protection: When temperature exceeds 80C, the smart cable automatically stops current flow to protect the system Instructions: 1. Connect red and black battery clips to positive and negative terminals of the car battery 2. Insert plug of battery clips into the power supply's start outlet 3. Turn ignition key to start the engine 4. If engine does not start, wait several seconds before trying again until successful 5. After starting, disconnect the battery plug from power supply and remove clips from battery Product Name: Relay Smart Clip Voltage: 12V Rated current: 500A, Peak current: 700A Cable length: 36cm (red including head), 28cm (black including head) Compatibility: Suitable for vehicles with engine displacements of 1.5L, 1.8L, 2.0L, 2.4L, 2.5L, 3.0L, 3.5L Features: Multi-protection functions including high voltage protection, low voltage protection, overcurrent protection, reverse polarity protection, short circuit protection, over-discharge protection, high and low temperature protection Color: As shown in picture Material: Plastic + Metal Package Contents: 1 x Clip Note: Package includes only the items listed above. Other accessories are not included. Lighting and display differences may cause slight color variations between image and actual product. Measurement tolerance: 1-3cm