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Thread: Quick clock battery question

  1. #1
    Join Date
    Sep 2016
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    Default Quick clock battery question

    I just picked up an old DEC computer, 33mhz 386sx, 4mb of ram, 128mb hard drive, etc. My question is it's got a 4.5v Rayovac 840 clock battery in it. Do I need to get a rechargeable replacement or can I just rig something up with 3 AA batteries?

  2. #2
    Join Date
    Jan 2007
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    Pacific Northwest, USA
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    Default

    The 840 is not a rechargeable battery. Commercial replacements are available--and yes, 3xAA alkaline cells should work fine. see here

  3. #3

    Default

    In lieu of that four cells also works just as well, either AA or AAA.
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  4. #4
    Join Date
    Sep 2016
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    Shrewsbury, MA
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    Default

    Perfect, thanks. I'll get one of those 3 or 4 AA battery holders and make a new clock battery pack for it

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