[volt-nuts] Fluke 735C - Information Needed

[J. L. Trantham]

Nigel,

All help appreciated.  I never knew about SLA batteries in a 1/2 D size
looking like NiCd's.  I have seen 'packaged' cylindrical SLA's as used in
the battery option HP 5315A but they are much bigger than a 'D' cell.

The cells certainly look like NiCd based on the 'corrosion' and 'exudate'
they produced.  I have never seen an SLA do that.

In addition, they clearly say 'RECHARGEABLE NICKEL-CADMIUM BATTERY' in all
caps, bold letters next to the 'GE' trademark.

Thanks again.

Joe



-----Original Message-----
From: volt-nuts-bounces at febo.com [mailto:volt-nuts-bounces at febo.com] On
Behalf Of GandalfG8 at aol.com
Sent: Tuesday, September 10, 2013 8:54 AM
To: volt-nuts at febo.com
Subject: Re: [volt-nuts] Fluke 735C - Information Needed

Not wanting to labour the point, but just to be sure as I don't recognise
that part number, in the 80s GE did make cylindrical sealed lead  acid cells
under the brand name "Cyclon" and these looked very similar  to Ni-Cads.
 
If the cells themselves aren't clearly marked one obvious check is the
charging circuit, basically constant voltage for lead acid and constant
currrent  for Ni-Cad.
 
Regards
 
Nigel
GM8PZR
 
 
In a message dated 10/09/2013 13:42:27 GMT Daylight Time, jltran at att.net
writes:

Charles,

The NiCd pack (of five 'units', side by side, with  each 'unit' being two
1/2
D cells stacked on top of each other) is 12 V 2.2  AH,  GE Cat. No. JF
479147
8249.  I suspect the '8249' is a date  code and they look original.  The Cal
date was also Feb 82.

I  found 1.2 V 2.5 AH 1/2 D cells for $5.50 ea. On the internet.  I  would
like to find a cheaper source since I need 20 of them, enough for two packs,
one pack on each side of the Battery PCB.  I'll also need some  'thin' heat
shrink tubing to go around the 2 cell 'units'.

I could  also use some 'spare' 1/2 D cells for the battery packs in my
5061A's and  B's.

I wonder what would be better, SLA or NiCd's?  The NiCd's had  'spewed' and
corroded the PCB a bit but I have that cleaned up.  I  have seen SLA's (in
UPS's) 'shrivel' and get very hot as they  die.

I'll have to take a look at the 732A manual to see what it's  battery
construction looks like.

Joe

-----Original  Message-----
From: volt-nuts-bounces at febo.com  [mailto:volt-nuts-bounces at febo.com] On
Behalf Of Charles Steinmetz
Sent:  Monday, September 09, 2013 11:10 PM
To: Discussion of precise voltage  measurement
Subject: Re: [volt-nuts] Fluke 735C - Information  Needed

Joe wrote:

>I need to fabricate a couple of 12 V NiCd  battery packs using 1/2 D 
>cells

Does it have NiCds now?   If so, do they look original?  The 732A uses SLA
batteries (originally  4x 6v, but most folks replace them with 2x 12v).  If
it has SLAs or  gel cells (or originally did), you should replace them with
the same so the  charger works properly.

Best  regards,

Charles



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