Tom, I use my KX3 for portable SOTA activation extensively. I do not worry with internal batteries and instead, use a LiFePO4 battery exclusively. When I did my research a couple years ago, I came to the conclusion that for my style of operating, LiFePO4 technology is superior to regular Li-PO batteries when factors such as battery safety and KX3 safety (terminal voltage output) are taken into consideration. That said, there are a number of vendors that supply such a battery that would be suitable for use with the KX3, and you've already received one recommendation from the list using LiFePO4 technology cells. Here is my recommendation.
http://www.batteryspace.com/lifepo4-26650-battery-12-8v-6-6ah-84wh-20a-rate-in-aluminum-box-with-pcb-7-92.aspx I decided on this model because the cells and charge controller are housed in a extruded aluminum enclosure for extra safety and the bare wire ends allowed me to configure it with powerpole connectors. Additionally, the black plastic top to the enclosure is removable should you ever have to go inside and replace the cells or the charge controller. I added powerpole connectors as to be able to plug the battery into something like a rigrunner for a DC power distribution hub for powering more than just the KX3 when in the field. I have two years so far on this pack with no problems to date. I usually get two to three days of SOTA type operation out of this battery when in field use. If I am powering other power hungry devices (charging my cell phone for example) simultaneously while using the KX3, I can easily get a full day plus. Just depends on how you operate and what you intend to power besides the KX3. Good luck 73 Dave N5XL ______________________________________________________________ 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
