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    Alternative SI battery solution?

    my tach works but is occasionally jumpy, my coolant gauge requires slapping the dash though the nuts are tight, and the econometer/SI lights only come on after at least a 200mi drive. Cells are sitting at respectively 1.6 and 1.7v. Also the Internet told me these would be NiCd but these are MnO2-Li which is a lithium composition I've never heard of

    Anyone know if a 5v regulator could approximate the voltage from the SI batteries? Anyone installed an exterior battery holder and just used four D cells or AAs or AAAs?

    ALSO what is this LED for?


    Sent from my iPhone using Tapatalk

    #2
    from my 'scrapbook'---
    REMOTE BATTERY
    Heres's a copy of Rick Kjeldsen's instructions on how to replace the Nicad batteries. You might want to just run 3 wires from the instrument cluster to a convenient location to mount the batteries so in 4 years when it happens again you can easily replace the batteries. You need to use 3 wires because the center tap of the 2 batteries is used on the SI board as well as the 2 ends.
    How to swap your cluster batteries and relocation http://www.r3vlimited.com/board/showthread.php?t=200912
    My CA legal M60 swap

    The happening in our garage

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      #3
      The question is, since I have 3v lithium cells should I replace with 3v lithium? Or is the circuit designed to recharge them? I looked it up and this variety isn't intended to be recharged, and I don't want battery electrolyte leaking everywhere if it does


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        #4
        Replacing the lithium batteries with NiCd technology is a horrible idea. The LED is for internal diagnostics.

        Just replace the batteries and you'll be good for another 10 years at least.
        Owner - Bavarian Restoration
        BMW and European Electronics Repair and Restoration
        www.BavRest.com
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          #5

          This was my solution


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            #6
            Why not just swap those batteries with the dead batteries? I dont see the point of adding the daughter board.
            Owner - Bavarian Restoration
            BMW and European Electronics Repair and Restoration
            www.BavRest.com
            My Feedback Thread
            Our Facebook!
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              #7
              Positive tab ends are slightly different dimensions and I didn't want to bend the crap out of them.


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