[Elecraft] KXBC3 charger question

[Walter Underwood]

From the instructions:

"Only a few microamperes of current are required to keep the clock running when the KX3 is off. This is supplied by either the external power supply or the internal batteries.”

https://ftp.elecraft.com/KX3/Manuals%20Downloads/E740167%20Elecraft%20KXBC3%20Installation%20and%20Operation%20Rev%20B1.pdf <https://ftp.elecraft.com/KX3/Manuals%20Downloads/E740167%20Elecraft%20KXBC3%20Installation%20and%20Operation%20Rev%20B1.pdf>

The self-discharge of NiMH batteries will probably be higher than the clock current.

What kind of batteries? Eneloop Pro batteries are low self-discharge, with 85% of charge after one year of storage. High-capacity NiMH batteries (often 2700 mAh or higher) can have higher self-discharge rates. 

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Oct 4, 2021, at 9:25 PM, Gwen Patton <ardrhi at gmail.com> wrote:
> 
> Docs call for Nickel Metal Hydride batteries, not Nickel Cadmium. I don't
> think the internal charger is designed for NICAD batteries. Unless you're
> using a separate charger?
> 
> 73,
> Gwen, NG3P
> 
> On Mon, Oct 4, 2021, 11:16 PM Eddy - k6sdw <k6sdw.usa at gmail.com> wrote:
> 
>> I have a KX3 with the KXBC3 Nimh charger and Nimh batteries installed. My
>> question is: What's the current drain on the NICADS when I store the KX3
>> for long periods of time? The KX3 is primarily used for portable operation
>> and when I put the KX3 on the bench the batteries are dead needing
>> recharging. I wonder if I should pull on AA battery out during storage?
>> 
>> Many thanks
>> 
>> GL/73
>> 
>> Ed/k6sdw
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