Battery charging

mspauld

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Dec 3, 2007
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I have just purchased a used boat equipped with something call the Retrotec stay-in-charge system (SNC-2) for 24/36v systems. I have (1) 12v cranking battery and (2x12) or 24v trolling motor batteries. Was wondering if anyone had info regarding the correct wiring configuration for this device when used with a dual 12v on board charger. Any help appreciated, Thanks!
 

Silvertip

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Sep 22, 2003
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Re: Battery charging

If it's a dual output (e.g., 2 - 12V outputs), each output is connected to one of the two trolling motor batteries. If it has three outputs then the third output goes to the starting battery.
 

mspauld

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Dec 3, 2007
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Re: Battery charging

Thanks for taking time to reply. The link was very helpful. I have dropped an e-mail to Stay in Charge to see if a wiring diagram is available for my application. From what I can determine on their web site, my unit is installed correctly. I was however a little suspicious of connecting both outputs of the dual bank charger to the single input of the SNC unit. The previous owner of my boat had the SNC unit professionally installed by a marine dealer. I became suspicious when I first operated the unit and heard clicking comming from the SNC box while charging with the onboard charging unit. Any other info would be welcome. Thanks!:
 
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