Use a better AA battery (3.7V 4.9AH Li-ion): http://www.ebay.com/itm/181411959514
and battery holder: http://www.utmfg.com/category/BAT-AA.html Use 4 of them for 14.8V. Keith KB9WMJ ----- Original Message ----- From: "hb9brj" <hb9...@gmail.com> To: <elecraft@mailman.qth.net> Sent: Saturday, July 12, 2014 12:30 PM Subject: Re: [Elecraft] My KX3 Battery Approach Using 8 internal eneloop cells, I measured battery voltage versus current (as shown on the KX3 display) during RX and different TX pwr levels, created an Excel scatter chart and fitted a linear trend line. The result: 1.15 Ohms, R^2 = 0.95. A single eneloop cell has around 0.035 Ohms of internal resistance (measured with a 4-connector battery DC resistance meter forcing current pulses thru the cell under test). My conclusion: 25% of the 1.15 Ohms are due to the 8 cells, 75% originate in the battery holder and additional wiring. Markus HB9BRJ ______________________________________________________________ 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
