How to interpret Duracell AA data...

P

Pimpom

Guest
This datasheet for a \"Duracell AA Power Pix\" (ZR6 Zn/NiOOH) cell
had me puzzled for some time. It\'s a one-page datasheet and the
screenshot here is the only electrical data on it. The rest is
mechanical.
https://www.dropbox.com/s/5gj10n8wlbuwoec/Duracell%20AA.png?dl=0

The problem I have is in interpreting the parameters. E.g., for
the blue curve it says \"1500mW 2s / 650mW 28s 5m/H\". I take this
to mean 1500mW load for 2 seconds, then 650mW for the next 28
secs. This alternating load is repeated for 5 minutes (10
cycles), and the 5-minute cycle is repeated once every hour. This
gives an energy consumption rate of about 4.9 mWh every hour, or
simply an average of 4.9mW.

At this rate, it provides 0.72 Wh to 1.2V, or about 147 hours,
and 260 hrs to 1.0V. Is this correct?
 
I get 19h which is close to the 20h 1C rating, which may have been by
design.

On Tue. 21 Jul.-20 9:25 a.m., Pimpom wrote:
This datasheet for a \"Duracell AA Power Pix\" (ZR6 Zn/NiOOH) cell had me
puzzled for some time. It\'s a one-page datasheet and the screenshot here
is the only electrical data on it. The rest is mechanical.
https://www.dropbox.com/s/5gj10n8wlbuwoec/Duracell%20AA.png?dl=0

The problem I have is in interpreting the parameters. E.g., for the blue
curve it says \"1500mW 2s / 650mW 28s 5m/H\". I take this to mean 1500mW
load for 2 seconds, then 650mW for the next 28 secs. This alternating
load is repeated for 5 minutes (10 cycles), and the 5-minute cycle is
repeated once every hour. This gives an energy consumption rate of about
4.9 mWh every hour, or simply an average of 4.9mW.

At this rate, it provides 0.72 Wh to 1.2V, or about 147 hours, and 260
hrs to 1.0V. Is this correct?
Click to expand...
1500mW*2s +650mW*28s = 3000mWs + 18,200mWs=21,200mWs x10 = 212Ws/h
=>/3600s/h = 58.8 mW/h (vs 4.9)


Thus if cutoff is 1V , rating is 1.116 Wh using pixel scaling or
1116mWh/58.89mW/h = 18.95h

The 2s test is 1500mW starting at 1.6V or ~ 1.07A but at 1V is 1.5A.

Tony
 
I get 19h which is close to the 20h 1C rating, which may have been by
design.

On Tue. 21 Jul.-20 9:25 a.m., Pimpom wrote:
This datasheet for a \"Duracell AA Power Pix\" (ZR6 Zn/NiOOH) cell had me
puzzled for some time. It\'s a one-page datasheet and the screenshot here
is the only electrical data on it. The rest is mechanical.
https://www.dropbox.com/s/5gj10n8wlbuwoec/Duracell%20AA.png?dl=0

The problem I have is in interpreting the parameters. E.g., for the blue
curve it says \"1500mW 2s / 650mW 28s 5m/H\". I take this to mean 1500mW
load for 2 seconds, then 650mW for the next 28 secs. This alternating
load is repeated for 5 minutes (10 cycles), and the 5-minute cycle is
repeated once every hour. This gives an energy consumption rate of about
4.9 mWh every hour, or simply an average of 4.9mW.

At this rate, it provides 0.72 Wh to 1.2V, or about 147 hours, and 260
hrs to 1.0V. Is this correct?
Click to expand...
1500mW*2s +650mW*28s = 3000mWs + 18,200mWs=21,200mWs x10 = 212Ws/h
=>/3600s/h = 58.8 mW/h (vs 4.9)


Thus if cutoff is 1V , rating is 1.116 Wh using pixel scaling or
1116mWh/58.89mW/h = 18.95h

The 2s test is 1500mW starting at 1.6V or ~ 1.07A but at 1V is 1.5A.

Tony
 
On Tuesday, July 21, 2020 at 6:25:49 AM UTC-7, Pimpom wrote:
This datasheet for a \"Duracell AA Power Pix\" (ZR6 Zn/NiOOH) cell
had me puzzled for some time. It\'s a one-page datasheet and the
screenshot here is the only electrical data on it. The rest is
mechanical.
Click to expand...

The only relevant specification for Duracell primary cells is VLwk
(electrolyte leakage volume per week.)

-- john, KE5FX
 
On Tuesday, July 21, 2020 at 6:25:49 AM UTC-7, Pimpom wrote:
This datasheet for a \"Duracell AA Power Pix\" (ZR6 Zn/NiOOH) cell
had me puzzled for some time. It\'s a one-page datasheet and the
screenshot here is the only electrical data on it. The rest is
mechanical.
Click to expand...

The only relevant specification for Duracell primary cells is VLwk
(electrolyte leakage volume per week.)

-- john, KE5FX
 
On Tuesday, July 21, 2020 at 6:25:49 AM UTC-7, Pimpom wrote:
This datasheet for a \"Duracell AA Power Pix\" (ZR6 Zn/NiOOH) cell
had me puzzled for some time. It\'s a one-page datasheet and the
screenshot here is the only electrical data on it. The rest is
mechanical.
Click to expand...

The only relevant specification for Duracell primary cells is VLwk
(electrolyte leakage volume per week.)

-- john, KE5FX
 
On 7/22/2020 3:01 AM, Tony Stewart wrote:
I get 19h which is close to the 20h 1C rating, which may have been by
design.

On Tue. 21 Jul.-20 9:25 a.m., Pimpom wrote:
This datasheet for a \"Duracell AA Power Pix\" (ZR6 Zn/NiOOH) cell had me
puzzled for some time. It\'s a one-page datasheet and the screenshot here
is the only electrical data on it. The rest is mechanical.
https://www.dropbox.com/s/5gj10n8wlbuwoec/Duracell%20AA.png?dl=0

The problem I have is in interpreting the parameters. E.g., for the blue
curve it says \"1500mW 2s / 650mW 28s 5m/H\". I take this to mean 1500mW
load for 2 seconds, then 650mW for the next 28 secs. This alternating
load is repeated for 5 minutes (10 cycles), and the 5-minute cycle is
repeated once every hour. This gives an energy consumption rate of about
4.9 mWh every hour, or simply an average of 4.9mW.

At this rate, it provides 0.72 Wh to 1.2V, or about 147 hours, and 260
hrs to 1.0V. Is this correct?
1500mW*2s +650mW*28s = 3000mWs + 18,200mWs=21,200mWs x10 = 212Ws/h
=>/3600s/h = 58.8 mW/h (vs 4.9)
Click to expand...
Oops. Somehow I made a mistake in the arithmetic. I don\'t know
how that happened - I\'m usually very careful about such things. I
do remember coming up with the figure 58.888 (recurring) earlier
as well as intuitively thinking that 4.9 mW looks too low. Thanks
for spotting the error.

However, my real question was about interpreting the cryptic
parameters \"1500mW 2s / 650mW 28s / 5m/H\". Did I get that right?
 
On 7/23/2020 9:56 PM, Mike wrote:
In article <85c83b6d-5e4b-4b9d-a6b8-0c39b4d7a3b1o@googlegroups.com>,
John Miles, KE5FX <jmiles@gmail.com> wrote:

This datasheet for a \"Duracell AA Power Pix\" (ZR6 Zn/NiOOH) cell
had me puzzled for some time. It\'s a one-page datasheet and the
screenshot here is the only electrical data on it. The rest is
mechanical.

The only relevant specification for Duracell primary cells is VLwk
(electrolyte leakage volume per week.)

What about MTBBaBU?

(Mean time between buying and binning, unused!)
Click to expand...
You two must feel very clever. You don\'t even have any idea which
cell type I\'m talking about, do you? Pathetic GG losers.
 
On 7/23/2020 9:56 PM, Mike wrote:
In article <85c83b6d-5e4b-4b9d-a6b8-0c39b4d7a3b1o@googlegroups.com>,
John Miles, KE5FX <jmiles@gmail.com> wrote:

This datasheet for a \"Duracell AA Power Pix\" (ZR6 Zn/NiOOH) cell
had me puzzled for some time. It\'s a one-page datasheet and the
screenshot here is the only electrical data on it. The rest is
mechanical.

The only relevant specification for Duracell primary cells is VLwk
(electrolyte leakage volume per week.)

What about MTBBaBU?

(Mean time between buying and binning, unused!)
Click to expand...
You two must feel very clever. You don\'t even have any idea which
cell type I\'m talking about, do you? Pathetic GG losers.
 
On 7/23/2020 9:56 PM, Mike wrote:
In article <85c83b6d-5e4b-4b9d-a6b8-0c39b4d7a3b1o@googlegroups.com>,
John Miles, KE5FX <jmiles@gmail.com> wrote:

This datasheet for a \"Duracell AA Power Pix\" (ZR6 Zn/NiOOH) cell
had me puzzled for some time. It\'s a one-page datasheet and the
screenshot here is the only electrical data on it. The rest is
mechanical.

The only relevant specification for Duracell primary cells is VLwk
(electrolyte leakage volume per week.)

What about MTBBaBU?

(Mean time between buying and binning, unused!)
Click to expand...
You two must feel very clever. You don\'t even have any idea which
cell type I\'m talking about, do you? Pathetic GG losers.
 
In article <85c83b6d-5e4b-4b9d-a6b8-0c39b4d7a3b1o@googlegroups.com>,
John Miles, KE5FX <jmiles@gmail.com> wrote:

This datasheet for a \"Duracell AA Power Pix\" (ZR6 Zn/NiOOH) cell
had me puzzled for some time. It\'s a one-page datasheet and the
screenshot here is the only electrical data on it. The rest is
mechanical.

The only relevant specification for Duracell primary cells is VLwk
(electrolyte leakage volume per week.)
Click to expand...

What about MTBBaBU?

(Mean time between buying and binning, unused!)

--
--------------------------------------+------------------------------------
Mike Brown: mjb[-at-]signal11.org.uk | http://www.signal11.org.uk
 
In article <85c83b6d-5e4b-4b9d-a6b8-0c39b4d7a3b1o@googlegroups.com>,
John Miles, KE5FX <jmiles@gmail.com> wrote:

This datasheet for a \"Duracell AA Power Pix\" (ZR6 Zn/NiOOH) cell
had me puzzled for some time. It\'s a one-page datasheet and the
screenshot here is the only electrical data on it. The rest is
mechanical.

The only relevant specification for Duracell primary cells is VLwk
(electrolyte leakage volume per week.)
Click to expand...

What about MTBBaBU?

(Mean time between buying and binning, unused!)

--
--------------------------------------+------------------------------------
Mike Brown: mjb[-at-]signal11.org.uk | http://www.signal11.org.uk
 
In article <85c83b6d-5e4b-4b9d-a6b8-0c39b4d7a3b1o@googlegroups.com>,
John Miles, KE5FX <jmiles@gmail.com> wrote:

This datasheet for a \"Duracell AA Power Pix\" (ZR6 Zn/NiOOH) cell
had me puzzled for some time. It\'s a one-page datasheet and the
screenshot here is the only electrical data on it. The rest is
mechanical.

The only relevant specification for Duracell primary cells is VLwk
(electrolyte leakage volume per week.)
Click to expand...

What about MTBBaBU?

(Mean time between buying and binning, unused!)

--
--------------------------------------+------------------------------------
Mike Brown: mjb[-at-]signal11.org.uk | http://www.signal11.org.uk
 
On Wed. 22 Jul.-20 2:15 a.m., Pimpom wrote:
On 7/22/2020 3:01 AM, Tony Stewart wrote:
I get 19h which is close to the 20h 1C rating, which may have been by
design.

On Tue. 21 Jul.-20 9:25 a.m., Pimpom wrote:
This datasheet for a \"Duracell AA Power Pix\" (ZR6 Zn/NiOOH) cell had me
puzzled for some time. It\'s a one-page datasheet and the screenshot here
is the only electrical data on it. The rest is mechanical.
https://www.dropbox.com/s/5gj10n8wlbuwoec/Duracell%20AA.png?dl=0

The problem I have is in interpreting the parameters. E.g., for the blue
curve it says \"1500mW 2s / 650mW 28s 5m/H\". I take this to mean 1500mW
load for 2 seconds, then 650mW for the next 28 secs. This alternating
load is repeated for 5 minutes (10 cycles), and the 5-minute cycle is
repeated once every hour. This gives an energy consumption rate of about
4.9 mWh every hour, or simply an average of 4.9mW.

At this rate, it provides 0.72 Wh to 1.2V, or about 147 hours, and 260
hrs to 1.0V. Is this correct?
1500mW*2s +650mW*28s = 3000mWs + 18,200mWs=21,200mWs x10 = 212Ws/h
=>/3600s/h = 58.8 mW/h (vs  4.9)

Oops. Somehow I made a mistake in the arithmetic. I don\'t know how that
happened - I\'m usually very careful about such things. I do remember
coming up with the figure 58.888 (recurring) earlier as well as
intuitively thinking that 4.9 mW looks too low. Thanks for spotting the
error.

However, my real question was about interpreting the cryptic parameters
\"1500mW 2s / 650mW 28s / 5m/H\". Did I get that right?
Click to expand...

Yes.

This battery only gives 1.1Wh with the lower load profile. The
advantage of this profile is that it might resemble a camera that can
take over 180 flashes on full charge with one 5 minute session of 10
flashes per hour.

With 1V cutoff for almost a day it will last 18.7h = 1100 mWh / 58.8 mWh.
 
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