Connect with us

Battery Question

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

Scroll to continue with content
  1. Jim Thompson

    Jim Thompson Guest

    CR2025

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

    Thanks!

    ...Jim Thompson
     
  2. James Arthur

    James Arthur Guest

    <abse dropped (for Google)>

    This is about as good as you'll find:

    http://data.energizer.com/PDFs/cr2032.pdf

    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


    JT,

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

    Marc
     
  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
    CR2032.
     
  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:
    http://www.panasonic.com/industrial/battery/oem/

    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"
    "Oppie"




    ** What a " wank err " !!!! ( pun intended )

    http://www.waynekerrtest.com/global/html/products/LCR/6430 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
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-