[time-nuts] HP-105B Battery Replacement?
David G. McGaw
david.g.mcgaw at dartmouth.edu
Fri Sep 16 17:01:09 EDT 2016
It has been my experience that both chemistries have thermal cutouts for
overcharge limiting and both can use chargers that detect the negative
voltage slope when the cells heat up once they are fully charged, hence
the ability to use the same chargers for NiCd and NiMH. I have many
radios that started out with NiCd batteries and the newer replacements
On 9/16/16 2:37 PM, Brooke Clarke wrote:
> Hi David:
> The chemistries are very different. Ni-Cad is endothermic whereas
> Ni-MH is Exothermic. This is why chargers for Ni-MH have a mandatory
> temperature sensor. This is one of the reasons I say Ni-Cad cells
> batteries are easy to charge.
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