-={ 2016-10-06 14:18:47.621938557+11:00 }=-   
      
   Hey Tony!   
      
    TL> In your example, efficiency at 7v input can't around 75%.  At 32V   
    TL> input, it's more like 15%.   
      
   12V or thereabouts.  I was using a marine battery as a power source but it   
   needed replacing so I switched it for a regular car battery which happened to   
   be handy.  So far the elcheapo car battery seems to be working better than the   
   more expensive marine battery was.   
      
   Life is good,   
   Maurice   
      
   ... Ne do ðu nauðer: ne ðe sylfne ne here, ne ðe sylfne ne leah.   
       Don't do either of these things: praise yourself or criticise yourself.   
   --- GNU bash, version 4.4.0(1)-release (x86_64-atom-linux-gnu)   
    * Origin: Little Mikey's Brain - Ladysmith BC, Canada (1:153/7001.0)