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Battery Question

Discussion in 'Electronic Design' started by Jim Thompson, May 11, 2007.

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  1. Jim Thompson

    Jim Thompson Guest


    What is the series resistance new? I can't seem to locate a real
    specification anywhere.


    ...Jim Thompson
  2. James Arthur

    James Arthur Guest

    <abse dropped (for Google)>

    This is about as good as you'll find:

    FWIW, Sony says "Recommended pulse drain: 12mA."

    Best regards,
    James Arthur
  3. Jim Thompson

    Jim Thompson Guest

    ...Jim Thompson
  4. James Arthur

    James Arthur Guest

  5. LVMarc

    LVMarc Guest


    its going to be Voc/Isc id pulse test it to be accurate.

  6. The Phantom

    The Phantom Guest

    I have a used CR2025. It's not completely dead, with open circuit voltage
    of 2.8 volts. I also have a brand new CR2016 and CR2032. The CR2016 is
    thinner than the CR2025 and the CR2032 is thicker than the CR2025. I
    measured the impedances of all three and got these results:

    Frequency CR2016 CR2025 CR2032

    20 Hz 63.5 92.6 9.1
    100 Hz 58.0 82.6 7.9
    1 KHz 47.0 48.0 7.1
    10 KHz 18.9 33.0 4.9
    100 KHz 4.8 29.2 3.2
    1 MHz 2.6 27.4 2.6

    The measurement was done with 10 mV across the cell, and the impedances are
    given in ohms.

    I would guess that a new CR2025 might lie between the CR2016 and the
  7. Ross Herbert

    Ross Herbert Guest

  8. Oppie

    Oppie Guest

    Nice testing there. What instrument(s) did you use?
  9. Jeff L

    Jeff L Guest

    Panasonic used to have data. Check:

    I've drawn 180+ mA out of a CR2032 and ended up with a reasonable lifespan.
    Application was a little demo card with a bunch of
    LED's controlled with a AVR uC . The capacity specs are actually pretty
    accurate, even for really low draws. I have a machine that used a big AA
    sized lithium cell, and I didn't have replacement, so I soldered the wires
    to a new Panasonic CR3032 (we had a ton in stock). About a year and a half
    later, the battery died - surprised at the short life I measured the current
    draw - it worked out that the battery was to be dead right around that time!
  10. The Phantom

    The Phantom Guest

    Wayne-Kerr 6440B. See the images on ABSE.
  11. Phil Allison

    Phil Allison Guest

    "The Phantom"

    ** What a " wank err " !!!! ( pun intended ) 6440.htm

    I found impedance figures near identical to those given for the CR2032 (
    using a new example of same ) with just my bench sine wave generator, a
    scope and a few low value resistors.

    ........ Phil
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