Thanks Jim, I took a look and they appear to be cheaper than the A123 packs (the brief scan I did) — I may buy one or two. But, with my two 4S1P A123 battery packs have performed very well with the KX3 so far. Although, this is a KX3 running QRP to 10 watts.
73, phil > On May 26, 2015, at 10:55 AM, Jim Brown <[email protected]> wrote: > > On Tue,5/26/2015 10:13 AM, Phil Hystad wrote: >> Thanks for any help you can provide — actual field experience preferred. > > You might want to reconsider your battery choices. Of what's available, > LiFePO4 batteries seem to be in the "sweet spot" for operation of our gear. > Their advantages include terminal voltage that matches our gear designed to > work on 12-14V, a nice flat discharge curve, a much better safety profile > than Li Ion, and less demanding charging requirements. > > I bought a BLF-1220W 20Ah pack from these folks, and loaned it and my KX3, > KXPA100, and PX3 to a couple of guys who were activating a rare 6M grid. It's > a demanding hike up a mountain to the site, so weight was a major factor. The > low current drain of this rig on RX allowed them to work all day on that > battery, and the terminal voltage was 13V when they went QRT. They also > carried a second 20Ah pack loaned by W6GJB, but didn't need it. As luck would > have it, the band never opened while they were there, so they made only 17 > QSOs. They easily might have used up both batteries if the band had opened. > > http://www.bioennopower.com/pages/comm-equipment-ham-radio > > Note the weight of the battery I chose, and compare it to the other 20Ah > batteries listed. > > Here's another excellent battery vendor. W6GJB bought his from them. Both > companies provide intelligent applications advice by email and land line. > > http://www.batteryspace.com/ > > 73, Jim K9YC > > > ______________________________________________________________ > 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 > Message delivered to [email protected] ______________________________________________________________ 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 Message delivered to [email protected]
