How about using a 4S LiFePO4 battery? From fully charged to 15% charge I get from about 14 V to 12 V in RX and very little sag on transmit. Pretty much the ideal battery for this radio in my opinion. They are rated to go down to 10V or so, but since you don't get that much more and you can permanently damage the batteries if you go too low, I stop at 12V. The KX3 will run full power throughout this range, too. I use real A123 brand cells with a balancing charger. These do not have quite as much energy density as LiPo;, but you do not need anything else. I also keep Eneloops in the KX3. I have not tested it but I think it will switch over if the external battery goes below their voltage, somewhere about 10 V. If someone could confirm that, it would be great. Those NIMH Eneloops run below 11V for most of the discharge cycle, so only 5 W on those but they hold a charge a long time so they can be used in a pinch.
73 Mark ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
