[time-nuts] Sulzer 5A & 5P PSU/battery question

[Scott McGrath]

I'm lucky I have a local batteries plus so no shipping.  They have a lot of stores and all of them can build packs

Sent from my iPhone

On Nov 1, 2012, at 8:21 PM, "J. L. Trantham" <jltran at att.net> wrote:

> I have a local shop that builds battery packs that turn out to be cheaper
> than Batteries Plus since shipping is not involved.  You should check your
> local yellow pages to see if you have a 'Battery Warehouse' type store.
> 
> Joe
> 
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of Scott McGrath
> Sent: Thursday, November 01, 2012 4:43 PM
> To: Discussion of precise time and frequency measurement
> Cc: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] Sulzer 5A & 5P PSU/battery question
> 
> Batteries Plus in the US builds nicad packs to order they have built packs
> for my 105 and 5065a and 5061a packs with original specification cells
> 
> Sent from my iPhone
> 
> On Nov 1, 2012, at 5:27 PM, Attila Kinali <attila at kinali.ch> wrote:
> 
>> On Thu, 01 Nov 2012 21:51:21 +0100
>> Magnus Danielson <magnus at rubidium.dyndns.org> wrote:
>> 
>>> Yesterday I picked up a Sulzer 5A + 5P without batteries. It is supposed 
>>> to have 21 D-cell NiCd batteries, but today those are not easy to come 
>>> by,
>> 
>> NiCd Batteries still exist, but have been mostly replaced by LiIon/LiPoly
>> packs these days. Though, you should be still able to find NiMH batteries,
>> which are in most cases a drop in replacement for NiCd, if you keep
>> two things in mind:
>> 
>> 1) The maximum charge current of the battery should never be exceeded.
>> NiCd were much more forgiving in that regard.
>> 
>> 2) When charging finished, then the batteries need to be disconnected
>> unless you do a trickle charge. At least this was a problem with the
>> early NiMH, it might have changed in the past 15 years. Check datasheet.
>> 
>> 3) Charge end detection for fast NiCd chargers (>1C) does not work with
>> NiMH as the negative Voltage slope of NiMH is not as pronounced as with
>> NiCd. If you have such a charger, you need to replace it with a modern
> one.
>> 
>> 
>> HTH
>> 
>>           Attila Kinali
>> 
>> PS: Yes, i cannot count :-)
>> -- 
>> There is no secret ingredient
>>        -- Po, Kung Fu Panda
>> 
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