On Mon, 13 Jul 2015 05:10:32 +0000 (UTC), danny burstein   
    wrote:   
      
   >Wondering if the following device is off-the-shelf   
   >at some not too absurd cost:   
   >   
   >I'm looking for an inverter/power supply that   
   >would have to incoming feeds. The first would   
   >be a connection to a battery bank; the second   
   >to a grid utility (a wall plug...)   
   >   
   >Concept: I'd have a solar charged battery   
   >array. As long as the batteries were reasonably   
   >"full", the inverter would draw power from   
   >them and feed it out the outlets.   
   >   
   >Once the batteries dropped to (for illustration)   
   >about 30 percent, the inverter would switch   
   >to the grid.   
   >   
   >This would allow us to ease into the solar   
   >option, starting off with, say, enough panels   
   >and batteries to provide ten percent of   
   >our demand. Six months from now we could   
   >pick up another couple of panels and get   
   >to 25 percent. (numbers for illustration).   
   >   
   >Any such beast exist?   
   >   
   >Thanks   
    Operating in reverse would beimple - just a dual conversion UPS - not   
   aware of an off-the-shelf "battery priority" system.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)