XPost: sci.electronics.equipment, sci.electronics.repair   
   From: jamessweet1@trashmail.net   
      
   Michael Kennedy wrote:   
   > "William Sommerwerck"  wrote in message   
   > news:kvydnb8rD-ERU9rVnZ2dnUVZ_rzinZ2d@comcast.com...   
   >> Running batteries in parallel is a bad idea. Think of what will happen if   
   >> their voltages don't match. If you do such a thing, you need to put diodes   
   >> in series with each.   
   >>   
   >   
   >  Some car batteries are connected in parallel. Especially larger trucks with   
   > diesel engines.   
   >   
   > Mike   
   >   
   >   
      
      
   Those normally use a battery isolator which is really just a couple of   
   large diodes. Most RVs and larger boats have a setup like that too.   
      
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