I have a 12V 20 Ah (240 Wh) LiFePO4 and it will run my heated CPAP machine (likely a different model) for two nights in a tent (about 50 Degrees F). The FAA will allow two spare batteries up to 160 Wh each most of the time.
I think, unless you can charge the battery before using it for the radio, you should have a different battery for the CPAP and the radio, maybe two or three and rotate them, rather than trying to use it for both, running it down with the radio and not having enough for the night to run the CPAP machine. I'd also suggest you get a 12V Watt Hour meter and see how much the two devices actually use with your specific conditions. I bought ones like these and added my own Powerpole connectors: https://www.amazon.com/dp/B01LVTST80 You usage will not be the same as someone else's and the CPAP usage depended on the ambient temperature. I did not use an amp with my KX3, so even a 3.8 Ah battery lasted hours. 73, Mark W7MLG On Sun, Feb 9, 2020 at 10:09 PM Tox <scott.sm...@gmail.com> wrote: > +1 > > Sizing would depend strongly on number of nights and transmitting > time, but the bioenno lfp, a cigarette lighter adapter for your model > bipap, a powerpole to 12v socket adapter,would cover things pretty > well. > > If you want to fly with it, consider getting two separate 96Wh > batteries to avoid FAA hassles. > > > Scott > ad6yt > > On Sun, Feb 9, 2020 at 7:53 PM Clay Autery <k...@montac.com> wrote: > > > > https://www.bioennopower.com/ > > > > LiFePO4, the best balance of power per unit volume/weight and safety. > > They probably have one to meet your requirements off the shelf, but they > > are capable of producing pretty much any custom battery you require. > > > > ______________________ > > Clay Autery, KY5G > > (318) 518-1389 > > > > On 02/09/20 19:17, Al wrote: > > > Greetings > > > > > > I am looking for a battery pack for for my KX3 station with a KXPA100 > > > amp and accessories. I also have a BiPAP (CPAP) machine. It has a > > > 12V/6.67 amp power supply. When boon docking, the battery pack has to > > > support needs to support a day of haming and the BiPAP for about 8 hrs > > > each night. > > > > > > IIRC: I had found a couple of companies that manufactured power pacs > > > in different chemistries, voltages and sizes. They also had good > > > descriptions of the advantages and disadvantages of the various Li > > > chemistries. I have lost track of them through various computers. > > > > > > I looking for a reputable company that can build me a battery pac that > > > has good safety features and of suitable size. I am not necessarily > > > looking for the cheapest battery pac--safety, reliability and > > > appropriate storage capacity are primary concern. Cost is factor as > > > well, but I am wary of bargain basement specials. > > > > > > Thank you, Al ve7ear > > > > > > ______________________________________________________________ > > > 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 k...@montac.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 scott.sm...@gmail.com > > > > -- > Scott Small > ______________________________________________________________ > 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 marklgoldb...@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 arch...@mail-archive.com
