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Soldering to battery terminals?

Discussion in 'Misc Electronics' started by mark thomas, Feb 2, 2005.

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  1. mark thomas

    mark thomas Guest

    I've attempted modding my Crest Spinbrush with a wall-adapter power supply.

    I quickly realized that solder does not stick to the battery terminals. It
    looks like they are standard battery terminals, and I'm not sure what metal
    they're made of, though it looks like stainless steel.

    I was thinking I could try bending the terminals up and then attaching
    alligator-style-clips to them, but it isn't a reliable connection for
    something that's going to be sealed up and bumped around.

    I'd rather not have to break the plastic covering open. Thanks for any
  2. Kim  Sleep

    Kim Sleep Guest

    Try scrubbing them with sandpaper, then smear some soldering paste onto
    where you roughed up the surface with sandpaper. Solder as usual.
    Good Luck
  3. CWatters

    CWatters Guest

    It does if you do it right.

    Abrade with sandpaper.
    Apply flux
    Use a big iron with lots of thermal mass in the bit
    Tin the cell and cool it quickly with wet cloth
    Tin the wire.
    Apply more flux to cell.
    Solder/flow the wire to the cell

    It's even possible to solder two cells end-to-end with no wire if you know
    what you are doing....
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