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Old    John Bauer (jonyb)      Join Date: Nov 2008       02-22-2009, 10:17 PM Reply   
I've gone through a lot of the threads on batteries and there's just too much there.

The boat is a 2007 Supra 24SSV Gravity Games, with the 340hp Indmar.

I gutted the stereo in my boat. Last year I just used to Stinger batteries for stereo and starting with the OEM battery switch. It's not a Perko switch, but similar.

I'm gonna continue to use the 2 Stinger batteries that I have, but add one of the OEM marine batteries that I removed from it last year.

How should I do this?

1. Use the OEM switch with the boat battery on position 1, then both Stinger batteries on position 2, nothing in between.

2. Forget the switch, wire the engine to the OEM Marine battery, then go from them with a single 4 gauge to this: http://www.stingerelectronics.com/productDetails.aspx?delineate=735&CategoryID=-1&ParentID=-1, then out to the 2 batteries. Should I just go to one battery, or 2 4 gauge wires to each battery? Instead of wiring the isolator to the ignition, I'll wire it to a toggle switch to keep the stereo batteries isolated until after the engine is started and running. The turning the switch on will connect the stereo batteries to allow them to charge. I realize that my alternator won't charge all 3, but it would be a little.

I'll also be adding 2 on-board battery maintainers for the Stinger batteries.
Old    John Bauer (jonyb)      Join Date: Nov 2008       02-22-2009, 11:02 PM Reply   
This is the battery switch that I currently have:

http://www.bigedgesports.com/product.asp?pid=2179399&lvl=1&cl=NA&cl2=NA
Old    Mikeski (mikeski)      Join Date: Aug 2003       02-22-2009, 11:09 PM Reply   
couple of Qs:

What loads do you have on your electrical system, what load is on what battery?

What size alternator?

Do you charge off the water?

I use the Yandina C150 to charge my stereo batteries, it works well, fully automatic function.
Old    John Bauer (jonyb)      Join Date: Nov 2008       02-22-2009, 11:26 PM Reply   
The stereo battery will have 4 Wet Sounds amps (2 Syn1's, Syn4, and Syn6).

OEM alternator, which is around 90-100A I believe

Off the water charging will be with 2 of these: http://www.stingerelectronics.com/productDetails.aspx?delineate=737&CategoryID=12&Pa rentID=1. Those will be hard-wired to each Stinger battery.
Old    Adam Curtis (acurtis_ttu)      Join Date: May 2004       02-23-2009, 5:48 AM Reply   
Keep using the stock "switch". Leave the perko style switch on "both" the VSR ( voltage sensing relay) will take care of the rest.

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