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Thread: Is this a good idea: soldering on a 2x AA battery holder (non-parallel) to a mobo?

  1. #1
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    Default Is this a good idea: soldering on a 2x AA battery holder (non-parallel) to a mobo?

    Can this be done, or is it a horrible idea? My Packard Bell Pack-Mate 28 Plus had a BR1225 battery soldered on, which I have removed, and currently have an external 2x AA battery holder hooked up using the jumper header (thank goodness for that). The down side is, the system takes a while to show the screen (about 10 seconds). The plus side, if the batteries leaked, it won't damage the board, and the system keeps the settings.

    My question is: can this be done? I know the BR1225 is a standard lithium battery, which is I can find on Digikey (love that site), but, there's no battery holder that has 2 through-hole soldering tabs or one that's 12.5mm in length.

  2. #2
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    Have you seen these?

  3. #3
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    Those are 12mm, and the 12mm CR1225's aren't being sold anymore, except for BR1225, which is 12.5mm, unfortunately. Thanks, though.

  4. #4
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    External battery holder is what I use.

    Which battery backup method you use should have no effect on startup times, it's only there to retain CMOS settings and the clock.
    WTB: IBM RT Parts and Accessories, and AOS.
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  5. #5

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    Quote Originally Posted by retro-pc_user View Post
    Those are 12mm, and the 12mm CR1225's aren't being sold anymore, except for BR1225, which is 12.5mm, unfortunately. Thanks, though.
    You might go with a smaller diameter cell.
    Anytime you connect a non-rechargeable cell, make sure the MB isn't charging it. If it is, it will fail and leak a lot sooner. In some cases, it means removing the the charging resistor.
    Dwight

  6. #6
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    You can still get CR1225s on Amazon though..

    https://www.amazon.com/dp/B0797R1X3M

  7. #7
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    Or a BR1216, which is 12mm. The current drain hardly matters--it's in the microamp range.

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