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Thread: Passat Battery

  1. #1
    Junior Member
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    Passat Battery

    Hi,

    Like a lot of people I imagine, my car isn't getting much use. Its moved twice in the last 5 weeks and I am wondering how long the battery will stay charged for without a long run to charge it up. Is it worth disconnecting it between use or charging it up? The manual isn't much help on the charging front suggesting taking it to a garage. I have a CTEK MXS 5.0 charger would that work OK? I am impressed it isn't flat by now but I assume it must have some kind of battery management system to prevent it from going flat?

    Thanks
    2015 Passat Estate 2.0 TDI-CR
    14 plate Polo Engine????

  2. #2
    Senior Member Gazwould's Avatar
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    Charge it up .

  3. #3
    Senior Member Sam&Anne's Avatar
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    Quote Originally Posted by Gazwould View Post
    Charge it up .
    Agreed.
    Use the correct lead link procedure.
    2015 Golf SV SE 1.4 TSI, DSG. Limestone grey. Sat Nav. F & R parking sensors. RVC. Digital climate control. Fog lamps.
    Wife: VW UP!

  4. #4
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    Quote Originally Posted by Sam&Anne View Post
    Agreed.
    Use the correct lead link procedure.
    I assume its the same as normal, remove the negative lead first then the positive? I have never had a car with as much electronics onboard and having already triggered an airbag warning light by not disconnecting stuff properly don't want to mess anything up.
    2015 Passat Estate 2.0 TDI-CR
    14 plate Polo Engine????

  5. #5
    Senior Member Sam&Anne's Avatar
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    No need to remove the battery leads.
    Charger positive lead to battery + terminal.
    Charger negative lead to suitable and clean earthing point on vehicle, not the negative battery terminal.
    Then switch on the charger.
    2015 Golf SV SE 1.4 TSI, DSG. Limestone grey. Sat Nav. F & R parking sensors. RVC. Digital climate control. Fog lamps.
    Wife: VW UP!

  6. #6
    Administrator Crasher's Avatar
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    Not relevant here but the old “earth off first, earth on last” adage is a good one.
    "I disapprove of what you say, but I will defend to the death your right to say it"

    Evelyn Beatrice Hall (28 September 1868 13 April 1956)

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