[time-nuts] HP 5065A battery pack

Magnus Danielson magnus at rubidium.dyndns.org
Sat Nov 21 05:25:31 EST 2015


Lacking the charging controller in mine, what would be a good approach 
to go about and build one?

Need to replace the battery setup in my XSRM setup too, the packs I 
installed is now dead.

Tempted to think in terms of LiFePO.


On 11/21/2015 03:45 AM, Dan Rae wrote:
> On 11/20/2015 4:54 PM, Bob Camp wrote:
>> 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
> Bob, I was answering Corby's query; mine had an original -hp- battery
> pack which I assumed was designed by someone who knew what they were
> doing, so I just put new Chinese made 2.2 Ah Nicad cells in it, exactly
> the same number as the original, however I don't know the capacity of
> the originals, they were unmarked.  Five or six years later it still
> will hold the thing up for at least twenty minutes, which I would think
> is what matters.
> It would in any case be difficult to fit any more than 21 in the space
> available.
> Dan
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