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To run on 1 or 2 or both batteries

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Old 06-03-2003, 01:26 PM
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Default To run on 1 or 2 or both batteries

What is the correct way to run your engine off a battery? on battery 1 or battery 2 or both? I start my engine on both and run engine on both because I have heard that on running on both you are keeping both batteries charged. Is this right or wrong?
 
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Old 06-03-2003, 01:36 PM
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You probably will not find a correct answer. I run just on one battery. That way if I run battery down with either lights or radio left on all I have to do is switch battery to other & start engine. I only leave on both for short periods of time for both batteries to charge after I screwed up & had run one down. You an buy an isolator that will charge both batteries but not let both batteries discharge
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Old 06-03-2003, 02:00 PM
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??? Great question. I always run on both batteries and then if I'm stopped somewhere to raft-up or whatever I will switch it to batt.1 or 2 so that they won't both go dead. Not sure if this is correct or not. Anyone else??


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Old 06-03-2003, 02:02 PM
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Quote:
Originally posted by craig223
??? Great question. I always run on both batteries and then if I'm stopped somewhere to raft-up or whatever I will switch it to batt.1 or 2 so that they won't both go dead. Not sure if this is correct or not. Anyone else??


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Old 06-03-2003, 02:05 PM
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I do what craig223 does also....Fred
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Old 06-03-2003, 02:10 PM
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If I jumped off of the brooklyn bridge, would you guys do it too?
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Old 06-03-2003, 02:10 PM
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I do the same as Craig223 as well. If we are all doing the same thing then it can't be that wrong
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Old 06-03-2003, 02:13 PM
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I run on both... I dont run my stereo while parked all that often, as I dont have the "killer system" as others do... so no point.
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Old 06-03-2003, 02:44 PM
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The Merc manual for my 496HO says to run on one battery, not both. Something about voltage spikes and how it would affect the ECU.
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Old 06-03-2003, 03:07 PM
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i start and run on two batteries so they both get charged
but on the hook or docked i switch to one battery
nothing worst than having a boat that wont start when anchored
plus i rack store my boat so i turn off both for storage

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