hmm I forgot to mention on my earlier post, but depending on the types of batteries in addition to the great info below, depending on your temp the battery your operating time / usage on a full charge will vary. Life expectancy will also vary
For example some of my batteries at 90F will have less than 1/2 capacity on a full charge same would be true for less then 50f ALso true is that my 10yr battery if mostly kept at above 80f would yield around 5yrs Those big batteries are kinda touchy about a lot of things Proper climate , venting, storage, emergency spill prep , fusing, a emergency kill switch , remember if the Fire Dept. kills your breakers your shack would still be 'on' all things to consider . I try to keep my batteries away from where people will be ...just in case Then again some like to just go 'best effort' On Jun 10, 2009, at 1:44 PM, John Watkins wrote: > I have been reading the comments about charging and floating various > batteries and just had to comment on the 'law of chemistry'. > > All lead acid batteries whether they are gelcel, AGM or conventional > deep cycle, all work because of that dreaded course you tried to > avoid in school called chemistry 101. Chemical reactions are > effected by temperature. Most of you see this coming already. Yes, > the float voltage for lead-acid batteries to achieve proper care > does change with the battery temperature. > > So, if your battery storage area changes temperature from summer to > winter you should make a voltage adjustment. Mine varies from 50's > in the winter to 80's in the summer. So I use the manufactures > chart to adjust my float voltage accordingly. My settings run about > 13.8 volts winter to 13.3 in the summer. Your mileage may vary. > > John - N0EVH > ______________________________________________________________ > 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 Myles Landstein myles.landst...@gmail.com please note my new email address dti will soon be eliminated , gmail is my new home update your dir ______________________________________________________________ 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
