LiFePO3 can be as heavy as KX3 and defeats the purpose of KX3 if weight is concerned.
I use 4S2P Lithium Ion. Like: https://www.batteryspace.com/li-ion-18650-battery-14-8v-5-2ah-77wh-2x4s-s-rechargeable-battery-pack-6-24.aspx Since it has 16.8V peak, I charge it via a diode for 16V. A diode internal to KX3 makes it 15.4 V max and thsi is what the internal meter in KX3 shows. This is 12% over 13.8 V. Lasts a long time. Full power up to 15W. No problem in > 5 years. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.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 arch...@mail-archive.com