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

Scott McGrath scmcgrath at gmail.com
Mon Feb 6 08:50:37 EST 2017

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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