[time-nuts] Li Ion Battery for HP 5065A

[J. L. Trantham]

Bert,

I'm interested in your quest.

I'm interested in batteries for not only the 5065A but also the 5061A and B.  I was thinking of an SLA for the 5061's.  I like the idea of being able to move the units without having to also move a separate battery backup system simultaneously.

What have you come up with and how have you addressed the potential for catastrophic failure of a Lithium Ion battery?

Hope all is well.

Joe

-----Original Message-----
From: time-nuts [mailto:time-nuts-bounces at lists.febo.com] On Behalf Of ew via time-nuts
Sent: Thursday, March 07, 2019 3:37 PM
To: time-nuts at lists.febo.com
Cc: ew
Subject: [time-nuts] Li Ion Battery for HP 5065A



Having recently acquired a HP 5065A with clock I decided to put a battery in it. My choice is 5000 mA Lithium Ion. Having in the past very good experience with a Florida vendor, was first choice. Sadly he is going out of business. 90+% out there is junk, have 26650s with 1800 mA. Last week finally located a reliable vendor, purchased seven 21700 Samsung B50s, reasonable price. 21700 is a better fit in the 50 X 65 X175 mm battery frame. After extensive dialog with vapah.inc and bench tests of all seven 4800 to 5200 mA, I am convinced that I found in the US a very viable source. No commercial or any other interest, now my only problem is how to get rid of the other junk.

 
Bert Kehren 
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