Using the DISP voltage, using internal battery, receive is 11.7V and 10W
in TUNE is 10.8V. a drop of 0.9V. The receive drop is a tenth or two, or
round down to a 1V total voltage drop during 10W transmit. The minimum
battery voltage would then be 11V or 3.67V per cell. Looking at
representative discharge curves, 3.67V, is consistent with a 50% discharge.
On 10/16/2016 08:01 AM, Chip Stratton wrote:
> The unloaded voltage of your pack, and the number of amp-hours used are
> consistent with each other, you are about half-way through the usable
> amp-hours of the battery, which has a 2.3 amp-hour rated capacity. Not sure
> exactly what to expect about the voltage drop under load, but I am not
> surprised by it, it would suggest the battery supply has about a 350
> milliohm resistance which again is not surprising.
> I think all is normal with your battery and rig. I'm sure someone else on
> the list with confirm or deny me!
> They could have used Panasonic 3.2 amp-hour 18650 cells in the battery pack
> with no increase in size for longer operating time, but maybe it was a
> weight isssue?
> On Sun, Oct 16, 2016 at 8:31 AM, Howard Sherer <h...@lehigh.edu> wrote:
>> I have been running my KX2 with the Elecraft supplied batt pack for the
>> past two weeks and have a question for others using the same. I can run the
>> KX2 at 10W only till I have used 1.12 AH of the batt capacity and its key
>> up V=11.0 and key down is 10.3. At this time I can only run the KX2 at 5W.
>> I was expecting that I would be able to run the KX2 at 10W for a longer
>> period. I have repeated this through 4 recharge cycles and the results ar
>> the same. Is my batt pack showing reduced performance?
>> Overall I am very pleased with the performance of the KX2
>> Howard AE3T
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