If your car won't start even after using a portable jump starter, there could be several reasons why this is happening. Here are some troubleshooting steps you can follow to identify and potentially resolve the issue:
Check the connections: Make sure the jump starter cables are securely connected to both the battery terminals of your car. Sometimes, loose or faulty connections can prevent the jump starter from delivering enough power to start the engine.
Inspect the battery: If the connections are secure, the issue might be with the battery itself. Check the battery terminals for corrosion or dirt buildup. Clean them with a battery terminal cleaner and a wire brush if needed. Also, check the battery's age and condition. If it's an old battery, it might not hold a charge anymore and needs replacement.
Try a different jump starter: If you have access to another portable jump starter or jumper cables, try using those to see if the problem lies with the jump starter you are using.
Allow more time for charging: Sometimes, a severely drained battery may take a bit longer to charge before it can provide enough power to start the engine. Let the jump starter connected for a few more minutes before attempting to start the car.
Check the jump starter's capacity: Ensure that the portable jump starter you are using has sufficient capacity to start your car's engine. Different jump starters come with different power ratings, and smaller ones might not be suitable for larger vehicles or deeply discharged batteries.
Consider other issues: If the battery and the jump starter are not the problem, there might be other issues with your car that are preventing it from starting. It could be a faulty starter motor, a bad alternator, or other electrical issues. In such cases, it's best to have your car inspected and repaired by a qualified mechanic.
Seek professional help: If you have tried all the above steps and your car still won't start, it's time to seek assistance from a professional mechanic or a roadside assistance service. They will have the expertise and tools needed to diagnose and fix more complex car starting issues.
Remember to prioritize your safety while troubleshooting car issues. If you are unsure about what to do or encounter any hazards, it's better to seek professional help rather than attempting risky repairs on your own.