Listees:
   Regarding the posts yesterday about aux. battery charging via a relay, I
was wondering what the benefits were of a battery isolator versus a simple
relay?  Is it that the isolator can alter charging current to one battery over
another (or something like that) while a relay can only charge both batteries
equally, or what?  Don't both setups charge both batteries while the engine is
running and disconnect (and prevent discharge from) the main battery when the
engine is off?

Cary   

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