Gary: I built one of those M+ controllers many years ago. For Field Day this year, I had two 5 Watt solar panels hooked up in parallel going to it and then to a 5 AH gel cell. After about 6 hours of operating (search and pounce) with my K2 at 5 Watts, the micro M+ was cycling, indicating the battery was still fully charged. That was in full sunlight, only a few days from the summer solstice. Depending on how portable you want to be and how much operating you intend to do, I would suggest a panel in the 5-10 Watt category might work well for you. The controller itself can handle larger panels (higher current), but you don't want more than about an Amp going into a 7 AH gel cell, to keep from damaging it. Also, naturally, larger panels (current-wise) tend to be less portable.
73's, John AA0VE Gary W. Marklund wrote: > I've just ordered a M+. I'm using a 7AH 12v gel cell. I would appreciate > some suggestions for appropriate solar panels for this application. > > TNX and 73, > > Gary > KJ7RT > > ______________________________________________________________ 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
