On 12 Jun 2016 at 5:28, Robert Bruninga via EV wrote: > I added an unregulated solar panel that typically produces only 30 mA to a > very remote cabin car battery deep in the woods. The charge rate will give a > 2 hour per week use of the lights. > > But what happens if no one uses the cabin for months?
Does it have to be unregulated? Couldn't you add a simple 3-terminal regulator at float voltage (~13.5v)? (I don't know much about PV, so I don't know whether that would work.) I would think that if the charge were regulated to float voltage, the battery should last as long as the battery in a computer UPS, which is floated continuously. That's usually around 3-4 years in my experience. David Roden - Akron, Ohio, USA EVDL Administrator = = = = = = = = = = = = = = = = = = = = = = = = = = = = = EVDL Information: http://www.evdl.org/help/ = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Note: mail sent to "evpost" and "etpost" addresses will not reach me. To send a private message, please obtain my email address from the webpage http://www.evdl.org/help/ . = = = = = = = = = = = = = = = = = = = = = = = = = = = = = _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
