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  1. #1
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    Default Start vehicle whilst charging - what can happen?

    System is a 100 Ah deep cycle auxiliary battery connected through a CTEK 250S DUAL with a 100 Ah vehicle starting battery. Auxiliary battery is at the time being charged from 220V intelligent charger, battery is nearly full and I guess at the time charger is doing float cycle. Vehicle is then started. Will the CTEK automatically sense what is going on and disconnect the required circuits, or could damage occur to any of the two chargers or even the alternator with the 220V still connected?
    2011 Pajero 3.8 GLS LWB

  2. #2
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    Default Re: Start vehicle whilst charging - what can happen?

    Quote Originally Posted by Ouarzazate View Post
    System is a 100 Ah deep cycle auxiliary battery connected through a CTEK 250S DUAL with a 100 Ah vehicle starting battery. Auxiliary battery is at the time being charged from 220V intelligent charger, battery is nearly full and I guess at the time charger is doing float cycle. Vehicle is then started. Will the CTEK automatically sense what is going on and disconnect the required circuits, or could damage occur to any of the two chargers or even the alternator with the 220V still connected?
    Not an expert but battery charger is converting 220v AC to 12v DC. Let's wait for the experts.
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  3. #3
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    Default Re: Start vehicle whilst charging - what can happen?

    If I have understood your post correctly, no damage is possible.

  4. #4
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    Default Re: Start vehicle whilst charging - what can happen?

    Agree, it won't be damaged, the CTEK will detect that the battery is almost full or whatever and it will react accordingly, the battery only takes what it needs from which ever charger.

    P.S. Remember to unplug the 230V before you drive off.
    "The problems we have today is because the guys who work for a living are outnumbered by those who vote for a living." - Magnus Heystek

  5. #5
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    Default Re: Start vehicle whilst charging - what can happen?

    Thanks for the reassurance that the CTEK should manage the situation, also what I thought would happen.
    2011 Pajero 3.8 GLS LWB

  6. #6
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    Default Re: Start vehicle whilst charging - what can happen?

    The answers given are also applicable for nearly all chargers as the chargers can only provide their own maximum current. After the load they will continue charging based on the state of charge of the battery being charged.

  7. The Following User Says Thank You to ekkekan For This Useful Post:


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