Ah well, I think that probably settles it then:-)

In a message dated 10/09/2013 15:17:16 GMT Daylight Time, jltran@att.net
writes:

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@febo.com  [mailto:volt-nuts-bounces@febo.com] On
Behalf Of GandalfG8@aol.com
Sent:  Tuesday, September 10, 2013 8:54 AM
To: volt-nuts@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@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@febo.com  [mailto:volt-nuts-bounces@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:

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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As I recall, GE was first to commercialize the cylindrical sealed
Nicad cells.  They spun off their battery division to Gould, then
to GATES... or some such memory muddled permutation like that...

-Chuck Harris

GandalfG8@aol.com wrote:

Chuck,

Do you mean 'commercialize the cylindrical sealed LEAD cells'?  The
cylindrical cells in the 6 V battery that powers the HP 5315A is a Gates
IIRC.

Joe

-----Original Message-----
From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On
Behalf Of Chuck Harris
Sent: Tuesday, September 10, 2013 9:53 AM
To: Discussion of precise voltage measurement
Subject: Re: [volt-nuts] Fluke 735C - Information Needed

As I recall, GE was first to commercialize the cylindrical sealed Nicad
cells.  They spun off their battery division to Gould, then to GATES... or
some such memory muddled permutation like that...

-Chuck Harris

GandalfG8@aol.com wrote:

'D' cell.

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Nope, I was talking about GE and their early Nicads..

And, the cylindrical sealed LEAD acid cells were also
originally commercialized by GE.  They later spun off
that division to became GATES.

I had an old SOLA UPS that was made in the mid 1960's
that was full of GE SLA's... The color scheme of the
cells was exactly the same as the later GATES cells.
(Black bottom, white top with red trim...)

and I had an old Sulzer 2.5A double oven oscillator
that was full of the GE Nicads from about 1960.

GE was big in battery research in the late 50's, early
60's.

I don't recall the exact order, but there is a big
connection between GE, Gould, and GATES batteries.

... both Nicads and SLA's.

-Chuck Harris

J. L. Trantham wrote:

Same color scheme on the batteries in the 5315A.

Joe

-----Original Message-----
From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On
Behalf Of Chuck Harris
Sent: Tuesday, September 10, 2013 10:30 PM
To: Discussion of precise voltage measurement
Subject: Re: [volt-nuts] Fluke 735C - Information Needed

Nope, I was talking about GE and their early Nicads..

And, the cylindrical sealed LEAD acid cells were also originally
commercialized by GE.  They later spun off that division to became GATES.

I had an old SOLA UPS that was made in the mid 1960's that was full of GE
SLA's... The color scheme of the cells was exactly the same as the later
GATES cells.
(Black bottom, white top with red trim...)

and I had an old Sulzer 2.5A double oven oscillator that was full of the GE
Nicads from about 1960.

GE was big in battery research in the late 50's, early 60's.

I don't recall the exact order, but there is a big connection between GE,
Gould, and GATES batteries.

... both Nicads and SLA's.

-Chuck Harris

J. L. Trantham wrote:

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