Batteries for the 3458A
Hi, I have a 3458A Agilent it has the SMD board and the batteries M4Z32-BR00SH1 it has where manufactured in 1994! So 25 years old. The voltage were 2.8 V and 2.5V respectively. They unit never lost cal data. I replaced them by two batteries from Ebay that were manufactured on 2015.
I asked Keysight for the date of the batteries they sell, they could not tell me just said they will sell "fresh ones". Even if my Agilent unit was built the first Agiletn year 1999 that meant they put 5 years old batteries, but my unit is most likely arround 2005. So that means Keysight put older batteries. Anyone has experience ordering batteries for Keysight? How long do these batteries last on the shelves?. My 2015 batteries how long can they last aprox?
Interesting, not what one would expect from a major manufacturer. That said, I have found lithium batteries last a long long time in storage, obviously fresh would be better but from my experience most likely the older date code did not substantially shorten replacement period. The good news Snap-Hat Batteries are easy to source away from Keysight and most likely later date codes.
Tom Knox
"Peace is not the absence of violence, but the presence of Justice" Both MLK and Albert Einstein
From: volt-nuts volt-nuts-bounces@lists.febo.com on behalf of Miguel Yepes theamberco@hotmail.com
Sent: Wednesday, December 11, 2019 4:29 PM
To: volt-nuts@lists.febo.com volt-nuts@lists.febo.com
Subject: [volt-nuts] Batteries for the 3458A
Hi, I have a 3458A Agilent it has the SMD board and the batteries M4Z32-BR00SH1 it has where manufactured in 1994! So 25 years old. The voltage were 2.8 V and 2.5V respectively. They unit never lost cal data. I replaced them by two batteries from Ebay that were manufactured on 2015.
I asked Keysight for the date of the batteries they sell, they could not tell me just said they will sell "fresh ones". Even if my Agilent unit was built the first Agiletn year 1999 that meant they put 5 years old batteries, but my unit is most likely arround 2005. So that means Keysight put older batteries. Anyone has experience ordering batteries for Keysight? How long do these batteries last on the shelves?. My 2015 batteries how long can they last aprox?
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On Wed, 11 Dec 2019 at 23:30, Miguel Yepes theamberco@hotmail.com wrote:
Hi, I have a 3458A Agilent it has the SMD board and the batteries
M4Z32-BR00SH1 it has where manufactured in 1994! So 25 years old. The
voltage were 2.8 V and 2.5V respectively. They unit never lost cal data. I
replaced them by two batteries from Ebay that were manufactured on 2015.
What makes you believe that the original batteries were manufactured in
1999? Just because they have the number 99 on them does convince me that
they were made in 1999. I would not assume that is true unless the battery
data sheet indicates the format of the date code.
I personally find it hard to believe that Agilent would fit 5 year old
batteries in a piece of new equipment.
I asked Keysight for the date of the batteries they sell, they could not
tell me just said they will sell "fresh ones". Even if my Agilent unit was
built the first Agiletn year 1999 that meant they put 5 years old
batteries, but my unit is most likely arround 2005. So that means Keysight
put older batteries. Anyone has experience ordering batteries for Keysight?
How long do these batteries last on the shelves?. My 2015 batteries how
long can they last aprox?
To me, fitting almost 5 year old batteries from eBay in a 3458A is not the
greatest idea. You know nothing about their history - how they have been
stored, whether they are fakes. Whether they are rejects.
Others on the list should be aware that Miguel is in Mexico, so Digikey for
example would not ship batteries to Mexico.
Dave.
--
Dr. David Kirkby,
Kirkby Microwave Ltd,
drkirkby@kirkbymicrowave.co.uk
https://www.kirkbymicrowave.co.uk/
Telephone 01621-680100./ +44 1621 680100
Registered in England & Wales, company number 08914892.
Registered office:
Stokes Hall Lodge, Burnham Rd, Althorne, Chelmsford, Essex, CM3 6DT, United
Kingdom
IT WAS 1994 NOT 1999 THE DATA IS PRNTED ON THE BOTTOM 2ND WEEK.
From: volt-nuts volt-nuts-bounces@lists.febo.com on behalf of Dr. David Kirkby drkirkby@kirkbymicrowave.co.uk
Sent: Wednesday, December 11, 2019 6:24 PM
To: Discussion of precise voltage measurement volt-nuts@lists.febo.com
Subject: Re: [volt-nuts] Batteries for the 3458A
On Wed, 11 Dec 2019 at 23:30, Miguel Yepes theamberco@hotmail.com wrote:
Hi, I have a 3458A Agilent it has the SMD board and the batteries
M4Z32-BR00SH1 it has where manufactured in 1994! So 25 years old. The
voltage were 2.8 V and 2.5V respectively. They unit never lost cal data. I
replaced them by two batteries from Ebay that were manufactured on 2015.
What makes you believe that the original batteries were manufactured in
1999? Just because they have the number 99 on them does convince me that
they were made in 1999. I would not assume that is true unless the battery
data sheet indicates the format of the date code.
I personally find it hard to believe that Agilent would fit 5 year old
batteries in a piece of new equipment.
I asked Keysight for the date of the batteries they sell, they could not
tell me just said they will sell "fresh ones". Even if my Agilent unit was
built the first Agiletn year 1999 that meant they put 5 years old
batteries, but my unit is most likely arround 2005. So that means Keysight
put older batteries. Anyone has experience ordering batteries for Keysight?
How long do these batteries last on the shelves?. My 2015 batteries how
long can they last aprox?
To me, fitting almost 5 year old batteries from eBay in a 3458A is not the
greatest idea. You know nothing about their history - how they have been
stored, whether they are fakes. Whether they are rejects.
Others on the list should be aware that Miguel is in Mexico, so Digikey for
example would not ship batteries to Mexico.
Dave.
--
Dr. David Kirkby,
Kirkby Microwave Ltd,
drkirkby@kirkbymicrowave.co.uk
https://www.kirkbymicrowave.co.uk/
Telephone 01621-680100./ +44 1621 680100
Registered in England & Wales, company number 08914892.
Registered office:
Stokes Hall Lodge, Burnham Rd, Althorne, Chelmsford, Essex, CM3 6DT, United
Kingdom
volt-nuts mailing list -- volt-nuts@lists.febo.com
To unsubscribe, go to http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com
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On Thu, 12 Dec 2019 at 01:22, Miguel Yepes theamberco@hotmail.com wrote:
IT WAS 1994 NOT 1999 THE DATA IS PRNTED ON THE BOTTOM 2ND WEEK.
I don’t recall saying 1994 - I wrote 1999. But unless you have a data sheet
confirming the format of any date code, I would not assume that you are
interpreting it correctly. Sometimes date code are written in obscure ways
- for example, on HP equipment, a part of the s/n indicates the number of
weeks since 1960 the last engineering change was made.
The super capacitor I recently got you has a date code on it, but you will
not interpret it easily.
Dave.
--
Dr. David Kirkby,
Kirkby Microwave Ltd,
drkirkby@kirkbymicrowave.co.uk
https://www.kirkbymicrowave.co.uk/
Telephone 01621-680100./ +44 1621 680100
Registered in England & Wales, company number 08914892.
Registered office:
Stokes Hall Lodge, Burnham Rd, Althorne, Chelmsford, Essex, CM3 6DT, United
Kingdom