Went to the mechanic/boat store today to look at hooking up a new gadget to the boat. The small positive bolted terminal was cut off my cranking battery never noticed it til today...so I bought a new battery...he said with the ETEC I run it was important to have engine and accessories on different terminals meaning not all one at one terminal...did not know if this really made a difference or not...didn't matter needed a new battery anyway for a duck machine...but is their any truth in what he was saying?