IT WAS 1994 NOT 1999 THE DATA IS PRNTED ON THE BOTTOM 2ND WEEK. ________________________________ From: volt-nuts <[email protected]> on behalf of Dr. David Kirkby <[email protected]> Sent: Wednesday, December 11, 2019 6:24 PM To: Discussion of precise voltage measurement <[email protected]> Subject: Re: [volt-nuts] Batteries for the 3458A
On Wed, 11 Dec 2019 at 23:30, Miguel Yepes <[email protected]> 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, [email protected] 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 -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com and follow the instructions there. _______________________________________________ volt-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com and follow the instructions there.
