Given the MP automobile charger's voltage threshold (won't charge when the car DC voltage drops below some threshold), I've ordered this DC-DC converter which will output a constant 13.8V.  Rated to 15A which is far over what I need.  Sole issue is whether the quality is any good.  I've bought "cheap" from China before and gotten what I paid for...
I'll report back when I receive it and try it out.
I'll simply be soldering male and female 12V automobile connectors to it.
Possibly add a fuse and switch. Maybe add a computer and display. And a modem. And keyboard. Perhaps a radar system. And heliograph. And ...
	
		
			
		
		
	
				
			I'll report back when I receive it and try it out.
I'll simply be soldering male and female 12V automobile connectors to it.
Possibly add a fuse and switch. Maybe add a computer and display. And a modem. And keyboard. Perhaps a radar system. And heliograph. And ...
 
				
		 
			 
										 
  
 
		 
 
		 
 
		 
 
		 
 
		 
  
  
  
  
  
  
  
 
		 
 
		