[time-nuts] HP 5065A battery pack

[J. L. Trantham]

Corby,

I have two 5065A's with the battery back-up feature (that I have removed the fuse from to, hopefully, preserve longevity of the battery pack), one 'white face' without the clock and one 'black face' with the LED clock.  I'll be happy to open one (or both) and inspect the battery pack if needed.

I have rebuilt the battery packs for both and, IIRC, there are 20 cells.  I can't say that there aren't 21 but it's been a long time.

Let me know if you would like me to open the pack and take some pictures.  Happy to do so if you would like.

Thanks.

Joe

-----Original Message-----
From: time-nuts [mailto:time-nuts-bounces at febo.com] On Behalf Of Bob Camp
Sent: Friday, November 20, 2015 6:54 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] HP 5065A battery pack

Hi

I don’t in any way doubt your count. If indeed they are putting 21 cells into that circuit, the NiCads likely don’t last as long as they might with a different charging circuit ….

Bob

> On Nov 20, 2015, at 3:56 PM, Dan Rae <danrae at verizon.net> wrote:
> 
> On 11/20/2015 10:52 AM, cdelect at juno.com wrote:
>> Any one know how many cells went into the HP 5065A battery packs?
>> 
> 21 Corby, in three rows of seven, from my notes when I re-celled mine.
> 
> Dan
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