CR2025

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

Thanks!

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice480)460-2350 | |
| E-mail Address at Website Fax480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

America: Land of the Free, Because of the Brave

http://www.panasonic.com/industrial/battery/oem/images/pdf/Panasonic_Lithium_CR2016_CR2025.pdf

Cheers

"Jim Thompson" wrote in
message news
CR2025

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

Thanks!

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice480)460-2350 | |
| E-mail Address at Website Fax480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

America: Land of the Free, Because of the Brave

Jim Thompson wrote:
CR2025

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

Thanks!

...Jim Thompson


JT,

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

Marc

On Thu, 10 May 2007 16:42:48 -0700, Jim Thompson
wrote:

CR2025

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

Thanks!

...Jim Thompson

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.

On Thu, 10 May 2007 16:42:48 -0700, Jim Thompson
wrote:

CR2025

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

Thanks!

...Jim Thompson


The data sheet doesn't provide that specific detail but it does
suggest that further info can be requested.
http://www.maxell.co.jp/e/products/i..._DataSheet.pdf

"The Phantom" wrote in message
...
On Thu, 10 May 2007 16:42:48 -0700, Jim Thompson
wrote:

CR2025

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

Thanks!

...Jim Thompson

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.


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

"Jim Thompson" wrote in
message news
CR2025

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

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!



Thanks!

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice480)460-2350 | |
| E-mail Address at Website Fax480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

America: Land of the Free, Because of the Brave

"Jim Thompson" wrote in
message news
CR2025

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

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!



Thanks!

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice480)460-2350 | |
| E-mail Address at Website Fax480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

America: Land of the Free, Because of the Brave

On Fri, 11 May 2007 08:32:37 -0400, "Oppie" wrote:


"The Phantom" wrote in message
.. .
On Thu, 10 May 2007 16:42:48 -0700, Jim Thompson
wrote:

CR2025

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

Thanks!

...Jim Thompson

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.


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

Wayne-Kerr 6440B. See the images on ABSE.

On Fri, 11 May 2007 08:32:37 -0400, "Oppie" wrote:


"The Phantom" wrote in message
.. .
On Thu, 10 May 2007 16:42:48 -0700, Jim Thompson
wrote:

CR2025

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

Thanks!

...Jim Thompson

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.


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

Wayne-Kerr 6440B. See the images on ABSE.

On Thu, 10 May 2007 16:42:48 -0700, Jim Thompson
wrote:

CR2025

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

Thanks!

...Jim Thompson

I knew that if I looked for one, I would find a CR2025 still in the
package.

Herewith the impedance and phase of that impedance for a new CR2025.

It's quite a bit better than the used one I measured last night.

"The Phantom"
"Oppie"



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.


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

Wayne-Kerr 6440B. See the images on ABSE.




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

http://www.waynekerrtest.com/global/...430%206440.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

"The Phantom"
"Oppie"



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.


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

Wayne-Kerr 6440B. See the images on ABSE.




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

http://www.waynekerrtest.com/global/...430%206440.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