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Customer support


Welcome to CTEK and thank you for being a valued customer.

We are here to help and in this section you will find FAQs, troubleshooting, warranty information and video tutorials. If you can’t find what you are looking for, please contact us.

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Top 10 FAQ

  • MXS 5.0 CHECK, XS 0.8, MXS 5.0, MXS 5.0 POLAR, MXS 10EC, MXS 10, MXS 5.0 TEST&CHARGE: is lit
    See answer

    Explanation 1: Reverse polarity.
    Test: Make sure that the + cable/clamp is connected to the + terminal and the – cable/clamp is connected to the – terminal.

    Explanation 2: Loads are connected to the battery which requires more power than the charger can provide.
    Test: Turn off or disconnect the loads when charging.

    Explanation 3: The charger is not connected to a 12V battery.
    Test: Test with a fresh 12V battery.

    Explanation 4: The charge cycle is interrupted in step 1.
    Test: Test to restart the charge cycle, if it still fails in step 1 the battery is sulphated and needs to be replaced.

    Explanation 5: The charge cycle is interrupted in step 4.
    Test: Test to restart the charge cycle, if it still fails in step 4 the battery is can’t be charged and needs to be replaced.

  • PRO60: Can you also use it for 6V, 24V or 48V?
    See answer

    The PRO60 is a 12V charger.

  • CT5 TIME TO GO, CT5 TIME TO GO GULF EDITION: Can I use the charger for long term maintenance?
    See answer

    Yes, you can. The charger switches automatically to maintenance charging when the battery is fully charged.

  • CT5 TIME TO GO, CT5 TIME TO GO GULF EDITION: How many amps does TIME TO GO provide?
    See answer

    It provides a maximum of 5 A and varies according to the needs of the battery.

  • CT5 POWERSPORT: Can I charge my lithium battery with POWERSPORT?
    See answer

    If you have the POWERSPORT charger with the lithium mode you can also charge and maintain any 12V lithium (12V LiFePO4) vehicle battery (from 5 to 25 Ah).

  • Charger functions, Batteries, PRO25S: Will my PRO25S charge AGM batteries?
    See answer

    Yes, it charges all lead-acid type batteries in normal mode.

  • CTX BATTERY SENSE: Why doesn’t the percentage show 100% when the voltage meter is higher than 12.8 V which is said to indicate a fully charged battery?
    See answer

    Measuring the voltage for estimating the charge status of a Lead Acid battery can only be done when the battery has been at rest for a certain period -sometimes more than 10 hours. This situation is likely to occur after charging the battery or after a ride with the car for instance. Battery Sence takes this into consderation when calculating the charge status.

  • SMARTPASS 120: How do I connect Smartpass 120?
    See answer

    Please refer to manual or web page for fitting instructions.

  • D250SA: Which fuse size shall I use for D250SA?
    See answer

    30 A

  • D250SA: How do I activate the Smart alternator setting?
    See answer

    The D250SA has a wiring harness with a black and a red wire, the red wire must be connected to an Ignition signal wire +15 (DIN 72552).