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.
John KN5L 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? > > Chip > AE5KA > > 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 >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to lightdazz...@gmail.com >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to j...@kn5l.net > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com