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    JT400 2500A Portable Jump Starter with 1002000 CCA Battery Tester, 12V Car Battery Jump Starter for Up to 8.5L Gas or 6.5L Diesel Engines, Smart Bluetooth Automotive Battery Load Tester

    • Smart Jump Starter and Battery TesterA powerful jump starter that delivers up to 2500A peak current to start 12V vehicles (up to 8.5L gas / 6.5L diesel). It functions as both a car battery booster and battery tester, featuring built-in Bluetooth 5.3 for real-time battery monitoring via a mobile app. It supports battery health, cranking, and charging tests, as well as real-time voltage monitoring, and then provides key data such as SOH (State of Health), SOC (State of Charge), voltage, current, and rated capacity.
    • Extreme Safety ProtectionEquipped with an advanced BMS and smart self-identifying clamps for fully insulated and reliable operation. Features 10 comprehensive protections, including Spark-Proof, Reverse Polarity, Over-Charge, Over-Current, Short-Circuit, Low/High Temperature, Over-Voltage, and Over-Load protectionensuring safe and confident use.
    • Wide Battery CompatibilityThis alternator tester is compatible with most batteries (1002000 CCA), including Flooded, AGM Flat Plate, AGM Spiral, GEL, and EFB types. Supports multiple testing standards: CCA / SAE / EN / DIN / IEC, ideal for DIY users, home mechanics, and vehicle owners.
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    Any questions? Our AI mode will help you find out quickly.

    JT400 jump starter and battery tester

    Q: Why can't Bluetooth connect?

    A: 1. Make sure your phone’s Bluetooth isn’t connected to other devices. 2. Go to your phone settings, search “LOKITHOR,” and check if Bluetooth permission is enabled. 3. Please contact after sales.

    Q: How can I find out my battery type and CCA rating?

    A: You can check the battery label, visit the manufacturer’s official website, or contact the manufacturer directly.

    Q: Can it test all types of 6V, 12V, 24V batteries?

    A: It only tests 12V lead-acid batteries, including regular flooded, AGM flat plate, AGM spiral, GEL, and EFB.

    Q: Why are there differences in the test results at the same time?

    A: Slight variations in test results are normal and can be caused by changes in ambient temperature, the battery's current condition, or the vehicle's electrical load. We recommend checking that the input parameters (such as CCA) are correct.

    Q: How do use the Boost Start function?

    A: Normally, you can start the car by turning on the unit and connecting the clips. If it won’t start, use boost mode: connect the red clip to the positive terminal, hold “M” for 5s, then connect the black clip to the negative terminal to start.

    JT400 jump starter and battery tester

    Q: Why can't Bluetooth connect?

    A: 1. Make sure your phone’s Bluetooth isn’t connected to other devices. 2. Go to your phone settings, search “LOKITHOR,” and check if Bluetooth permission is enabled. 3. Please contact after sales.

    Q: How can I find out my battery type and CCA rating?

    A: You can check the battery label, visit the manufacturer’s official website, or contact the manufacturer directly.

    Q: Can it test all types of 6V, 12V, 24V batteries?

    A: It only tests 12V lead-acid batteries, including regular flooded, AGM flat plate, AGM spiral, GEL, and EFB.

    Q: Why are there differences in the test results at the same time?

    A: Slight variations in test results are normal and can be caused by changes in ambient temperature, the battery's current condition, or the vehicle's electrical load. We recommend checking that the input parameters (such as CCA) are correct.

    Q: How do use the Boost Start function?

    A: Normally, you can start the car by turning on the unit and connecting the clips. If it won’t start, use boost mode: connect the red clip to the positive terminal, hold “M” for 5s, then connect the black clip to the negative terminal to start.

    JT400 2500A Portable Jump Starter with 1002000 CCA Battery Tester, 12V Car Battery Jump Starter for Up to 8.5L Gas or 6.5L Diesel Engines, Smart Bluetooth Automotive Battery Load Tester

    Warranty & Returns

    Warranty, Returns, And Additional Information

    Warranty

    • Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
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