[time-nuts] What to do with a 5061A/5061B with dead NiCds

Scott McGrath scmcgrath at gmail.com
Mon Feb 6 08:55:14 EST 2017

I would second the UPS idea in addition to rebuilding the internal pack which I see as more of a carryover supply while physically moving the standArd or performing maintenance on the line / 24VDC inputs

Content by Scott
Typos by Siri

> On Feb 6, 2017, at 8:50 AM, Scott McGrath <scmcgrath at gmail.com> wrote:
> I went with option #2 and opted for batteries plus to rebuild the packs as I recall it was about 80 dollars to rebuild the pack which included a 1 year warranty
> The problem with moving to lithium batteries is building the battery management system and safety systems needed for the SAFE operation of lithium cells.
> Content by Scott
> Typos by Siri
>> On Feb 5, 2017, at 6:27 PM, Skip Withrow <skip.withrow at gmail.com> wrote:
>> Hello time-nuts,
>> I have 5061A and 5061B units with the battery option and dead battery
>> packs.  My question is what makes the most sense when refurbing these units?
>> 1.  Yank the old battery out and just leave it that way.  Running the unit
>> on a UPS would preserve the functionality.
>> 2. Replace the pack with a rebuilt NiCd pack.  I'm sure Batteries Plus
>> would be happy to do it, but sounds expensive.
>> 3. Replace the pack with a NiMH pack, and really crank down the float
>> current of the 5061.
>> 4. Replace the pack with Li-ion battery.  Would be a much smaller battery,
>> but the charging circuit would have to be pitched.  Building in a Li-ion
>> charge controller sounds like it could be a project (which I don't
>> necessarily want).
>> 5. Yank the old battery pack and run the 5061 on two 12V batteries with an
>> appropriate power supply/charger (basically a version of #1).
>> Any thoughts on these or other options would be appreciated.  Thanks in
>> advance.
>> Regards,
>> Skip Withrow
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