Is CR-2477/VCN acceptable replacement for BR-2477/VAN ?

[plantgrower]

I have an agilent 34970a which currently has a PANASONIC - BR-2477/VAN battery soldered in it that needs replacing is a  CR-2477/VCN  a suitable replacement as the BR variant is not available.

[Stonent]

I'd say yes, but....  BR are designed for more temperature tolerance than CR batteries.  If the battery is helping store calibration data, I'd make sure to some how wire up some 3V power in parallel to the battery so that you don't lose data when it is removed.

Technical Data - Table 1 - (CF)n/LI: Poly-Carbon Monofluoride (BR)
Technical Data - Table 2 - Mn02/LI:Manganese Dioxide (CR)

http://www.panasonic.com/industrial/batteries-oem/oem/primary-coin-cylindrical/br-cr.aspx

Coin type lithium batteries are high energy, high reliability batteries for a variety of applications. The 3 volts in these high energy density batteries is about twice that of conventional dry batteries.

Panasonic coin type lithium batteries are available in two types: poly-carbonmonofluoride lithium batteries (BR series) for uses that require extended reliability and safety over a broad temperature range and manganese dioxide lithium batteries (CR series) for uses that require and strong load pulse characteristics.

The CR Lithium primary coin cells contain Perchlorate over the limit specified by the state legislature of California and are therefore subject to requirements in the California Code of Regulations, title 22, division 4.5: Chapter 33 – Best Management Practices for Perchlorate Materials.

•Very safe (poly-carbonmonofluoride lithium)  <------------
•Extremely strong load pulse characteristics (manganese dioxide lithium)
•Operating temperature range:
•BR Coin Cells: -30ºC ~ +80ºC <------------
•CR Coin Cells: -30ºC ~ +60ºC

To be safe, probably should stick with the BR battery, you don't want it popping and ruining your nice gear.

[Stonent]

Ok scratch the part about CAL data

http://www.home.agilent.com/agilent/editorial.jspx?cc=US&lc=eng&ckey=1000001022:epsg:faq&nid=-11143.0.00&id=1000001022:epsg:faq

Is there a battery in the Agilent 34970A?
Yes. A 3.0-volt lithium battery, A1BT101, is used to power the real-time clock, stored state, and reading storage memory with line power removed. The battery has a nominal lifetime of 4 years and can be replaced by the user. The battery is soldered into the 34970A. This battery does not affect the calibration memory.

A low battery will typically give errors when ac line power is removed and then re-applied. Any of the following errors may indicate a low battery:

•201, "Memory lost: stored state"
•202, "Memory lost: power-on state"
•203, "Memory lost: stored readings"
•204, "Memory lost: time and date"
Replacement battery Agilent part number 1420-0860. Refer to the 34970A Service Guide for verification and replacement procedures.p.

[plantgrower]

To be safe, probably should stick with the BR battery, you don't want it popping and ruining your nice gear.

Does anybody know a stockist of a  BR-2477/VAN in the UK please ? Digikey list the Panasonic part but no stock 

[Stonent]

To be safe, probably should stick with the BR battery, you don't want it popping and ruining your nice gear.

Does anybody know a stockist of a  BR-2477/VAN in the UK please ? Digikey list the Panasonic part but no stock 

Looks like you just have to wait 2 weeks. I entered 1qty and got this:

Product Lead Time Estimates

Digi-Key Part Number P030-ND
Manufacturer Part Number BR-2477A/VAN
Description BATT LITH HITEMP 1000MAH PC PINS



Quantity

Ship Date Estimate
(mm/dd/yyyy)

1 7/5/2013

[Stonent]

Allied has them for export:

http://www.alliedelec.com/search/productdetail.aspx?SKU=70196835

Newark also

http://www.newark.com/jsp/search/productdetail.jsp?SKU=40T0046&CMP=AFC-OPF

Just to be sure, does your battery stand up or sit flat?

[nukie]

Microbattery.com

[plantgrower]

Just to be sure, does your battery stand up or sit flat?

Stands up on its edge.

Looks like you just have to wait 2 weeks.

I just noticed that too thanks. Looks like I'll just have to wait.

[matemathieu]

For the record, I have changed the battery in the same Agilent 34970A chassis.
It was a SANYO cR14250SE already, so I have just replaced it.