Answer:
If you cannot jump start your car with our products, please follow these steps:
1) Check the Battery Level
- Make sure that the jump starter battery level is at least 20%;
- We recommend you charge it to 80% or fully charge it.
Note: Even though our product can restart dead batteries when the battery level of the jump starter is 20%, we still suggest you recharge the jump starter to above 80% for the best performance. When starting a completely dead battery, the car engine requires more power.
2) Check the Connection
Ensure that the jumper clamps are connected to the battery poles correctly (The red clamp is attached to the positive battery terminal and the black one to the negative battery terminal).
3) Check Error Codes
If you see the “Error Code” message pop up on the screen, please check the link below:
4) If you see nothing on the screen (neither the “READY” icon nor the “Error Code” icon), please try the Force Start function.
If the voltage of your vehicle battery is extremely low, then the jump starter will not recognize it as a vehicle battery. Please try to use the Force Start function.
- Before you start: check your battery level
Make sure that the jump starter battery level is at least 20%
Note: Even though our product can restart dead batteries when the battery level of the jump starter is 20%, we still suggest you recharge the jump starter to above 80% for the best performance. When starting a completely dead battery, the car engine requires more power.
- 4 Steps to use the Force Start Function
Step 1: Insert the battery clamps into the jump starter and attach the clamps to the car battery (The screen may display the “Error Code 2” message or won’t display any instructions).
Step 2: Press the Power Button and Flashlight Button simultaneously for 2–3 seconds to start the force output.
Step 3: Start the car engine.
Step 4: Remove the clamps from the car battery.
Note: Please be cautious when using the Force Start Function as the auto-detection and safety features will be disabled. Ensure that you have a proper connection.
If you need assistance, please contact us:
If there is no “READY” icon on the screen, please contact our customer support at service@hulkman.com with the following information:
- Order number
- The serial number of your product (Where can I find the serial number?)
- Your vehicle model.
- Any image or video for proof of the issue (If applicable)
Our agent will help you troubleshoot your issues, with the guarantee of an exemplary experience.
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