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Auxially battery with isolator and solar battery maintainer
"Calif Bill" wrote in message ink.net... ".JIMinMA." wrote in message ... "Calif Bill" wrote in message link.net... If starting, the voltage will be below 13.4V and the batteries will not be combined. I installed one on my boat as the electronics power cycled when starting the motor (351W inboard). They happily stay on now. The only isolators I have seen have been the diode units. The combiner is a relay. Bill Your right. I didn't think of that. Battery voltage typically goes to about 10 V when the engine is cranking so the West Combiner/Isolator would be in Isolation mode. How do you handle an emergency start situation when the starting battery is dead? Jim I have a Guest dual battery switch. The combiner is hooked up to the 1 and 2 battery connections and then off the #2 connection is a wire to a single battery switch. The electronics runs off the single switch. So to run the boat I have to turn the dual switch to #1 and also turn on the single switch. If #1 is dead, just turn the dual switch to #2. I lost a Pinpoint sonar unit when starting one time. The EMF kickback from the starter / solenoid blew a cap and the power supply in the unit. Bill Where does the combiner read the control voltage from? Jim |