Customer support

FAQ

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. For fastest response please write to us in English.

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Top 10 FAQ

  • CTX BATTERY SENSE: Battery Sense Software update
    See answer

    12th July Issues have been reported with the latest update on our Battery sense app – our developers are currently working hard to rectify the issue. In the mean time we have taken the decision to roll back to the previous version of the app, We have been assured this will happen over the next few days - iOS first then Android to follow.

  • D250SE, D250SA: Do I need to use solar?
    See answer

    No

  • D250SA: How can I tell if D250SA is working?
    See answer

    Please refer to the manual "D250SA Function indications" for explantion of light sequence.

  • D250SA: Can I use D250SA for lithium batteries?
    See answer

    No, it works only with lead acid batteries.

  • MXS 3.6, M45, XS 800: switches to after the charge has been stopped
    See answer

    Explanation: When the charger restarts the battery voltage is monitored. If the battery voltage is above 12,9V, the charging will not commence. When the battery is between 12,9V and 14,4V it is considered as fully charged. The charging will automatically start again when the battery voltage drops below 12,9V.

  • Charger settings: RECOND
    See answer

    A mode that is used for reviving deeply discharged batteries, breaking down sulphation and reversing acid stratification. It requires a manual selection from the user and will add an extra step to the charge cycle, It uses a voltage of 15.8v to deliberately gas the battery in a controlled way in order to re-mix the acid to get an optimized acid balance (acid weight). This mode is also recommended for Ca/Ca batteries which require the higher voltage when charging.

  • Batteries: CA/CA
    See answer

    Calcium Calcium batteries are a flooded low maintenance or maintenance free battery usually VRLA type . During construction some of the Antimony used in the construction is replaced by Calcium (2% approx). The benefits are a more robust grid, low water loss and longer shelf life.

  • Charger settings: AGM / * Snowflake
    See answer

    Because the AGM battery has a low internal resistance it can accept a higher charge voltage, in this mode the Bulk charge rate is 14.7v which is the optimum chare rate for the AGM type battery. In cold weather the internal battery chemistry slows considerably, this leads to the battery being reluctant to accept charge at a normal rate. By raising the charge rate to 14.7 (15v on the Polar) the battery accepts charge more readily

  • INDICATOR EYELET M8, INDICATOR PANEL 3.3M, INDICATOR EYELET M6, INDICATOR CLAMP, INDICATOR CIG PLUG, INDICATOR PANEL 1.5M: I have a INDICATOR connected to the battery all the time. Is there any risk of the battery discharging?
    See answer

    No, the purpose of the indicator is to allow you to quickly and easily see whether the battery must be charged, thereby reducing the risk of the battery being damaged because of being discharged. The INDICATOR uses about 1.5mA. Than gives 1,5 Ah /month. An average self-discharge for a battery is approx. 10 Ah/month.

  • D250SE, D250SA: Do I need an external regulator for the solar panel?
    See answer

    No

  • Can I use a SMARTPASS without a D250S DUAL?

    Yes you can. If you do not need a charging function to the service battery, SMARTPASS can be a good solution to provide the service battery with current, especially if you use the service battery while charging (fridge, microwave oven etc.).

  • D250SA: Can I use D250SA for lithium batteries?

    No, it works only with lead acid batteries.

  • D250SE: Can I use D250SE for lithium batteries?

    Yes it works both with lead-acid and lithium (12V LiFePO₄) batteries.

  • SMARTPASS 120: Can the starter battery and the service battery be different types of battery?

    Yes, (lead acid)

  • SMARTPASS 120S: Can the starter battery and the service battery be different types of battery?

    Yes.

  • CTEK MONITOR
    Can the CTEK MONITOR monitor my engine starting battery as well as my service battery?

    No, it cannot. The service battery is in continuous use, and so needs continuous monitoring. The starter battery, however, is subject only to periodic heavy loads followed by float charging, and so does not need to be monitored.

  • CTEK MONITOR
    Do I need to disconnect my CTEK MONITOR when I leave the vehicle for long periods?

    No. The CTEK MONITOR is designed to be permanently connected to the battery. It is independently fused, and draws only 1.5mA from the battery. At such a low current, it would take several years to discharge a typical fully-charged service battery.

  • CTEK MONITOR
    I have a 500W appliance. How do I know what current it will draw?

    Divide the power rating by the nominal supply voltage to find the current. So, for example, your 500W appliance will draw 500W/12V Amps from a nominal 12V battery: i.e. about 42Amps

  • CTEK MONITOR
    I have another voltmeter on my vehicle which shows a different value to the CTEK MONITOR indication.

    The CTEK MONITOR very accurately measures the voltage directly across the battery terminals. Other voltmeters may read differently owing to volt drops in the wiring.

  • CTEK MONITOR
    My battery is made up of a bank of several batteries. Is that a problem?

    Not as long as the combination produces a nominal 12 volts, and all the current drawn from the bank passes through the shunt.