Battery Load Test?? ON TOPIC!!! :-)...

[ABLE1]

Hello all,

I have a number of batteries that I would like to put apply small load
to check the voltage. Hopefully it will give me an idea of the capacity
that would be in the battery versus a new battery.

The battery is a SAFT LSG14250 3.6v Lithium 1/2AA.
I understand there is something special about these particular batteries
but I do not know what exactly.... other than they are made in France!!

They are used for a security door/window sensors that transmits a
319.5MHz signals to a receiver as to the condition open/close.

Therefore the actual load is small since the batteries last a number of
years.

What I am asking is what would be an appropriate resistive load to place
on the battery briefly while checking the voltage with my Fluke 111
Multi-meter?? 10 ohms-1000 ohms-10000 ohms or something different??.

I know this may not be a 100% perfect true or proper load test but
I just want to be in a good range.

I also know that it would be better to do a current test for amps but
I just thought a quick load voltage test for a few seconds would work.

Thanks in advance for any and all hints.

Les

 

[Charlie+]

On Wed, 13 Apr 2022 18:41:37 -0400, ABLE1 <somewhere@nowhere.net> wrote
as underneath :

Just measure the V with the battery in place (drain will be uA in this
case) and that tells you the state of charge for Li-ion. 10% steps!

4.20 100%
4.06
3.98
3.92
3.87
3.82
3.79
3.77
3.74
3.68
3.45
3.00 0% or might be lower depending on the equipment! C+

Hello all,

I have a number of batteries that I would like to put apply small load
to check the voltage. Hopefully it will give me an idea of the capacity
that would be in the battery versus a new battery.

The battery is a SAFT LSG14250 3.6v Lithium 1/2AA.
I understand there is something special about these particular batteries
but I do not know what exactly.... other than they are made in France!!

They are used for a security door/window sensors that transmits a
319.5MHz signals to a receiver as to the condition open/close.

Therefore the actual load is small since the batteries last a number of
years.

What I am asking is what would be an appropriate resistive load to place
on the battery briefly while checking the voltage with my Fluke 111
Multi-meter?? 10 ohms-1000 ohms-10000 ohms or something different??.

I know this may not be a 100% perfect true or proper load test but
I just want to be in a good range.

I also know that it would be better to do a current test for amps but
I just thought a quick load voltage test for a few seconds would work.

Thanks in advance for any and all hints.

Les

 

[Charlie+]

On Thu, 14 Apr 2022 07:13:55 +0100, Charlie+ <charlie@xxx.net> wrote as
underneath :

snip
>>

Sorry about the top post in error! C+

 

[Charlie+]

On Thu, 14 Apr 2022 07:21:59 +0100, Charlie+ <charlie@xxx.net> wrote as
underneath :

On Thu, 14 Apr 2022 07:13:55 +0100, Charlie+ <charlie@xxx.net> wrote as
underneath :

snip


Sorry about the top post in error! C+

And the 3.45V is 5% ! C+

 

[Peter W.]

https://en.wikipedia.org/wiki/Lithium_battery

Much depends on specific the battery chemistry. More than you need to know in the article attached.

Peter Wieck
Melrose Park, PA

 

[ohg...@gmail.com]

On Wednesday, April 13, 2022 at 6:41:45 PM UTC-4, ABLE1 wrote:

Hello all,

I have a number of batteries that I would like to put apply small load
to check the voltage. Hopefully it will give me an idea of the capacity
that would be in the battery versus a new battery.

The battery is a SAFT LSG14250 3.6v Lithium 1/2AA.
I understand there is something special about these particular batteries
but I do not know what exactly.... other than they are made in France!!

They are used for a security door/window sensors that transmits a
319.5MHz signals to a receiver as to the condition open/close.

Therefore the actual load is small since the batteries last a number of
years.

What I am asking is what would be an appropriate resistive load to place
on the battery briefly while checking the voltage with my Fluke 111
Multi-meter?? 10 ohms-1000 ohms-10000 ohms or something different??.

I know this may not be a 100% perfect true or proper load test but
I just want to be in a good range.

I also know that it would be better to do a current test for amps but
I just thought a quick load voltage test for a few seconds would work.

Thanks in advance for any and all hints.

Les

The ones we used were made in Israel.. We just changed them all out when one got weak, and they were *very* predictable. Since the sensors are monitored and report in to the control even when not activated, they are always under a slight draw in the sensor even when not actually transmitting. The ones that are on pass doors of course fail first. When we got a battery error from central station for a sensor, we would replace all the sensor batteries at one shot for customers with a maintenance agreement. These batteries also had a somewhat short shelf life. Any batteries we had in stock more than 3 years were discarded. Honestly, just buy a set of new batteries and change them all out when the first one fails.

 

[Peter W.]

> The ones we used were made in Israel.. We just changed them all out when one got weak, and they were *very* predictable. Since the sensors are monitored and report in to the control even when not activated, they are always under a slight draw in the sensor even when not actually transmitting. The ones that are on pass doors of course fail first. When we got a battery error from central station for a sensor, we would replace all the sensor batteries at one shot for customers with a maintenance agreement. These batteries also had a somewhat short shelf life. Any batteries we had in stock more than 3 years were discarded. Honestly, just buy a set of new batteries and change them all out when the first one fails.

AMEN!

Peter Wieck
Melrose Park, PA

 

[Phil Allison]

ABLE1
=========

I have a number of batteries that I would like to put apply small load
to check the voltage. Hopefully it will give me an idea of the capacity
that would be in the battery versus a new battery.

The battery is a SAFT LSG14250 3.6v Lithium 1/2AA.

** Same as a Li button cell, but bigger.

You need an ESR meter ( ie the Bob Parker one) to test these
- as the cell discharges or ages the reading increases by many times.

I understand there is something special about these particular batteries
but I do not know what exactly.... other than they are made in France!!

** Errr .... SAFT is a French company.


....... Phil

 

[ABLE1]

On 4/14/2022 6:29 PM, Phil Allison wrote:

ABLE1
=========

I have a number of batteries that I would like to put apply small load
to check the voltage. Hopefully it will give me an idea of the capacity
that would be in the battery versus a new battery.

The battery is a SAFT LSG14250 3.6v Lithium 1/2AA.

** Same as a Li button cell, but bigger.

You need an ESR meter ( ie the Bob Parker one) to test these
- as the cell discharges or ages the reading increases by many times.

I understand there is something special about these particular batteries
but I do not know what exactly.... other than they are made in France!!

** Errr .... SAFT is a French company.


...... Phil

Ok, to all that have responded. Thanks!!
However, I am trying to avoid buying another testing meter
just to check a few batteries. I was thinking that if I
could just add a small load I could see the difference between
a NEW and USED battery just to get a ratio or just a hint!!

Now, I can just go with a 10k resistor and see what happens but
maybe that is too much or not enough. Which is why I decided to ask.

Again thanks for all the comments!! And ON TOPIC as well!!

So, SAFT is a French company but they are not \"made\" in France??

Les

 

[Phil Allison]

ABLE1
======

I have a number of batteries that I would like to put apply small load
to check the voltage. Hopefully it will give me an idea of the capacity
that would be in the battery versus a new battery.

The battery is a SAFT LSG14250 3.6v Lithium 1/2AA.

** Same as a Li button cell, but bigger.

You need an ESR meter ( ie the Bob Parker one) to test these
- as the cell discharges or ages the reading increases by many times.

I understand there is something special about these particular batteries
but I do not know what exactly.... other than they are made in France!!

** Errr .... SAFT is a French company.


However, I am trying to avoid buying another testing meter
just to check a few batteries.

** Having suitable test gear is not optional.

I was thinking that if I
could just add a small load I could see the difference between
a NEW and USED battery just to get a ratio or just a hint!!

** So now you tell us you have a new one ?

Now, I can just go with a 10k resistor and see what happens but
maybe that is too much or not enough. Which is why I decided to ask.

** Try a 100ohm resistor - if you have one.

Asking us how to do tricky testing with the WRONG meter is pain dumb.


...... Phil

 

[whit3rd]

On Wednesday, April 13, 2022 at 3:41:45 PM UTC-7, ABLE1 wrote:

Hello all,

I have a number of batteries that I would like to put apply small load
to check the voltage. Hopefully it will give me an idea of the capacity
that would be in the battery versus a new battery.

The battery is a SAFT LSG14250 3.6v Lithium 1/2AA.

It\'s a 3.6V lithium battery; typical drain (if it\'s lasting years) is 35 microamperes,
and you can put a few hundred microamperes of load on it, so... use
a voltmeter with a 10k ohm resistor in parallel, that\'ll suck about 300 uA.

Try it on some just-died batteries to see what is \'no good\' level, and... take notes,
it could be a year from now when you need to check \'em again. Expect 3.0V when dead.

One generation of Mac computers used such a battery: the clocks died at almost
exactly 3 years. When I put a meter on the current draw, it measured exactly the
load that (according to manufacturer ratings) would drain \'em at three years. I mean,
about 1% accuracy. I did NOT expect that.

 

[ABLE1]

On 4/14/2022 8:21 PM, Phil Allison wrote:

ABLE1
======

I have a number of batteries that I would like to put apply small load
to check the voltage. Hopefully it will give me an idea of the capacity
that would be in the battery versus a new battery.

The battery is a SAFT LSG14250 3.6v Lithium 1/2AA.

** Same as a Li button cell, but bigger.

You need an ESR meter ( ie the Bob Parker one) to test these
- as the cell discharges or ages the reading increases by many times.

I understand there is something special about these particular batteries
but I do not know what exactly.... other than they are made in France!!

** Errr .... SAFT is a French company.


However, I am trying to avoid buying another testing meter
just to check a few batteries.

** Having suitable test gear is not optional.

I was thinking that if I
could just add a small load I could see the difference between
a NEW and USED battery just to get a ratio or just a hint!!

** So now you tell us you have a new one ?

Gee Whiz Phil!! But I did!!

\"I have a number of batteries that I would like to put apply small load
to check the voltage. Hopefully it will give me an idea of the capacity
that would be in the battery versus a new battery.\"

I guess you missed that?? Not a bid deal............ I guess!!

Now, I can just go with a 10k resistor and see what happens but
maybe that is too much or not enough. Which is why I decided to ask.

** Try a 100ohm resistor - if you have one.

Asking us how to do tricky testing with the WRONG meter is pain dumb.

This dumb guy is just trying a small dumb experiment!! Hopefully my
world will not come to an end as a result, although that is hard to
predict!! Actually I have less days than I have already used!!

..... Phil

Have a good Holiday!!!

Thanks,

Les

 

[ABLE1]

On 4/15/2022 6:11 AM, whit3rd wrote:

On Wednesday, April 13, 2022 at 3:41:45 PM UTC-7, ABLE1 wrote:
Hello all,

I have a number of batteries that I would like to put apply small load
to check the voltage. Hopefully it will give me an idea of the capacity
that would be in the battery versus a new battery.

The battery is a SAFT LSG14250 3.6v Lithium 1/2AA.

It\'s a 3.6V lithium battery; typical drain (if it\'s lasting years) is 35 microamperes,
and you can put a few hundred microamperes of load on it, so... use
a voltmeter with a 10k ohm resistor in parallel, that\'ll suck about 300 uA.

Try it on some just-died batteries to see what is \'no good\' level, and... take notes,
it could be a year from now when you need to check \'em again. Expect 3.0V when dead.

One generation of Mac computers used such a battery: the clocks died at almost
exactly 3 years. When I put a meter on the current draw, it measured exactly the
load that (according to manufacturer ratings) would drain \'em at three years. I mean,
about 1% accuracy. I did NOT expect that.

Hi whit3rd,

Great, that is doable!! Thanks for the hint for a start!!
I just happen to have a 10K Ohm resistor in my box.

Will try over the weekend and see how it goes.

Thanks!!

Les

 

[Phil Allison]

ABLE1 is Stupid LIAR
==================

However, I am trying to avoid buying another testing meter
just to check a few batteries.

** Having suitable test gear is not optional.
=================================

I was thinking that if I
could just add a small load I could see the difference between
a NEW and USED battery just to get a ratio or just a hint!!

** So now you tell us you have a new one ?

Gee Whiz Phil!! But I did!!

** Nope - you did NOT.

\" Hopefully it will give me an idea of the capacity
that would be in the battery versus a new battery. \"

The above does not say that *at all*.
See my ? It was a question.

** Try a 100ohm resistor - if you have one.

Asking us how to do tricky testing with the WRONG meter is pain dumb.

This dumb guy is just trying a small dumb experiment!!

** When you don\'t need help or advice.
Don\'t ask here for it.
Fuckwit.



...... Phil

 

[ABLE1]

On 4/15/2022 7:52 AM, Phil Allison wrote:

ABLE1 is Stupid LIAR
==================

** Having suitable test gear is not optional.
=================================

** So now you tell us you have a new one ?


** Nope - you did NOT.

The above does not say that *at all*.
See my ? It was a question.

Asking us how to do tricky testing with the WRONG meter is pain dumb.


** When you don\'t need help or advice.
Don\'t ask here for it.
Fuckwit.


..... Phil

Well I came here to ask an On Topic question and I get all of that??

SORRY!!! It seems that some here are ..........................

Never mind, I got the small hint I was looking for.

Einstein, Bell, Newton, Franklin, and many others were 100% successful
on their very first experiment every time!! Yup!! That is what the
history books say!!! Yea Right?!?! Not!!! ;-)

I Hope ALL have a good holiday feast!!

Les

 

[Phil Allison]

ABLE1 is Stupid LIAR
==================

** Having suitable test gear is not optional.
=================================
** So now you tell us you have a new one ?


** Nope - you did NOT.

Asking us how to do tricky testing with the WRONG meter is pain dumb.


** When you don\'t need help or advice.
Don\'t ask here for it.
Fuckwit.


Well I came here to ask an On Topic question and I get all of that??

** That was never an On Topic question.

Just like with so many dumb trolls, YOU wanted US to tell YOU how to make YOUR crackpot idea work.

> Never mind, I got the small hint I was looking for.

** And one big hint from me you were not.

Piss off.


....... Phil

 

[Peter W.]

Trust the Drongo from down-under to come in late with badly explained (but possibly accurate) suggestions, go vulgar when questioned, and have the last words (also vulgar).

Not sure if they have Twinkies in Australia (or if it can afford them), but Drongo clearly lives on the functional equivalent.

Peter Wieck
Melrose Park, PA

https://www.hostesscakes.com/products/twinkies/classic/

 

[ABLE1]

On 4/16/2022 8:55 AM, Peter W. wrote:

Trust the Drongo from down-under to come in late with badly explained (but possibly accurate) suggestions, go vulgar when questioned, and have the last words (also vulgar).

Not sure if they have Twinkies in Australia (or if it can afford them), but Drongo clearly lives on the functional equivalent.

Peter Wieck
Melrose Park, PA

https://www.hostesscakes.com/products/twinkies/classic/

Peter,

Thanks for the taste bud tingle. I will now go to the closet
in the basement and get a couple Twinkies for some desert!!

I doubt that they would be as good or very fresh if shipped all
the way to Australia as they are in Pennsylvania.

The rest is understood!!

Thanks,

Les