CTEK hook up question

Discussion in '1st Generation: 2002–06 R50, R53 & 2004–08 R52' started by bcgreen, May 1, 2021.

  1. bcgreen

    bcgreen Member

    Jan 12, 2017
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    #1 bcgreen, May 1, 2021
    Last edited: May 1, 2021
    I have the CTEK Charge O Mat with the cig. lighter adapter and it apparently does not work plugging into the cig. lighter. Is there a proven way of using the existing plug on tbe CTEK to attach to the battery using the (+) terminal in the engine compartment?
    What I noticed that if I turn the key to ON, then then I get the upper row lights to work. If I turn the key to off, the the lights - Full Battery (green) and Half full Battery (orange) are flickering.
    MC40
     
  2. MCS02

    MCS02 Moderator
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    Jul 31, 2009
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    Sorry for what may be dumb questions. I know on my R53 some devices that I plugged into the cigarette liter would not work. I would have to unplug them turn the plug a little a little then they would work. It was like they only made connection in a sextant spot. Have you tried this?
    Did it not come with the wires that you bolt to the battery terminals then plug into the CTEK?
     
  3. Red Bull

    Red Bull Active Member

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    Replied on the other forum, but it might be helpful for MA also.

    The MINI owners manual for my ‘05 says to charge only by using the port in the engine compartment and grounding on the nut/stud on top of the transmission mount per jump starting. That’s how I connected my CTEK cable.

    Most cars won’t charge through the lighter if there’s no power without the key, but there are some oddballs out there like my ‘90 Porsche. The lighter doesn’t work without the key, but the factory rebadged wall wart trickle charger with lighter plug still charges without the key. It’s wired some how to still allow 12V to flow in to the battery when the key is off. Strange!
     
  4. bcgreen

    bcgreen Member

    Jan 12, 2017
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    Rotating only changed how fast the Half Battery light flashes. Without the key in the ignition the top row of lights don't even come on. It didn't come with the pigtail wires but the pigtail wires came with the other Charge O Mat. It had already the clips to connect to the battery directly. I use that one for the 76 Porsche.
     

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