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Thread: Battery Tender 022-0165-DL-WH 12-Volt 2-Bank Battery Management System

  1. #1
    Join Date
    Sep 2010
    Location
    Augusta, GA
    Posts
    99
    My Cars
    92 850, 95 840, E90 M3

    Battery Tender 022-0165-DL-WH 12-Volt 2-Bank Battery Management System

    Have anyone used this battery tender because of our two/dual batteries in the trunk.
    Attached Images Attached Images
    Hurt

    Current project working on the E31 rebuild.
    1992 BMW 850i, 1995 E31 840ci, 2008 E90 M3, 2008 750Li

  2. #2
    Join Date
    Mar 2016
    Location
    Tyler, TX
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    248
    My Cars
    1992 E31 850i
    The two batteries are connected to one another, and you should only attach one to a battery tender. Otherwise, at best, you'll just confuse the device and probably defeat the whole purpose.

    That said, I use exactly that model -- one side connected to my 850 and the other side connected to my M Coupe. It keeps the batteries in both cars in good shape.

    Cheers, John

  3. #3
    Join Date
    Sep 2010
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    Augusta, GA
    Posts
    99
    My Cars
    92 850, 95 840, E90 M3
    Quote Originally Posted by dukegrad98 View Post
    The two batteries are connected to one another, and you should only attach one to a battery tender. Otherwise, at best, you'll just confuse the device and probably defeat the whole purpose.

    That said, I use exactly that model -- one side connected to my 850 and the other side connected to my M Coupe. It keeps the batteries in both cars in good shape.

    Cheers, John
    I was wondering if both batteries would charge with only one battery connector being connected . Also I disconnect both of my batteries when I am away and I was planning on connecting them to the charger separately . Thanks for the help. You provided me with the information I needed.
    Hurt

    Current project working on the E31 rebuild.
    1992 BMW 850i, 1995 E31 840ci, 2008 E90 M3, 2008 750Li

  4. #4
    Join Date
    Jan 2011
    Location
    Nottingham, UK
    Posts
    1,033
    My Cars
    E31, E36/7, E61
    I have used an optimate motorcycle trickle charger connected to the charge post under the hood for over 10 years, same batteries!!!

  5. #5
    Join Date
    Sep 2010
    Location
    Augusta, GA
    Posts
    99
    My Cars
    92 850, 95 840, E90 M3
    Nice, I have been scared from all that garage fire talk. Thats why I disconnect batteries when I store the car. Thanks


    Quote Originally Posted by e31gixxxer View Post
    I have used an optimate motorcycle trickle charger connected to the charge post under the hood for over 10 years, same batteries!!!
    Hurt

    Current project working on the E31 rebuild.
    1992 BMW 850i, 1995 E31 840ci, 2008 E90 M3, 2008 750Li

  6. #6
    Join Date
    Jan 2011
    Location
    Redmond WA 98052
    Posts
    33
    My Cars
    1997 BMW 850Ci

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