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boat parasitic electric drainage? #9113342 07/10/13 01:57 AM
Joined: Feb 2010
Posts: 5,103
Rob Lay Offline OP
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so I'm having to keep my boat in storage for a couple months. I fully charged the cranking and the 3 trolling batteries before I put in storage a week ago. I got it out tonight, the trolling batteries were still 100%, the cranking battery was 60%.

when I charged and then in storage I had the main and trolling motor switch off.

is this normal to have that much of a parasitic drain on the cranking battery?

boat is a 2011 520. thanks!

Re: boat parasitic electric drainage? [Re: Rob Lay] #9113773 07/10/13 03:57 AM
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nolte_martin Offline
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if by main switch you mean battery cut off switch then your battery might be getting weak but if you have a radio or an auto bilge pump they might be draining it


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Re: boat parasitic electric drainage? [Re: nolte_martin] #9114239 07/10/13 12:58 PM
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TLW Online Content
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Anything 'lectronic with "memory" will do it............

Re: boat parasitic electric drainage? [Re: Rob Lay] #9114263 07/10/13 01:08 PM
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gary purdy Offline
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Rangers have a seperate main breaker switch but it does not cut off power to the ECU on the outboard. You need a battery disconnect, disconnect one post on the battery or leave a trickle charger on the main battery.


The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD
Re: boat parasitic electric drainage? [Re: Rob Lay] #9114360 07/10/13 01:38 PM
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Gary Pender Offline
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Do you have a power pole? They will drain the batts. if not wired to a cut off switch.



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