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  Add Batteries and 115-V Charger

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Author Topic:   Add Batteries and 115-V Charger
William Draper posted 08-07-2006 01:14 PM ET (US)   Profile for William Draper  
I have recently purchased a 2004 270 Outrage with two 225 Mercury four-stroke engines (with Yamaha power heads). The boat has two batteries. I would like to add one or two additional batteries and a charger with shore power. What is the best way to safely do this? What components would be the best?

Has anyone out there found that two batteries were not enough power for reliably starting engines and running assessories on this boat-motor combination? How did you solve the problem?

glen e posted 08-07-2006 03:34 PM ET (US)     Profile for glen e  Send Email to glen e     
As a Mercury owner I went through the same thing. I now run four AGM batteres for two engines and also to power everything everything esle I have, which is substantial. Here's my thoughts on maintaining a good battery system. It's definitely a whole system that matters. Here's my receipe for a robust , rugged, dependable electrical storage system:
--AGM battereies in a quantitiy that none are drained more than 25% in any situation.
--A three-stage smart charger that is powered on and connected to the batteries 24/7 - anytime the boat is not being used, the charger is maintaining float level
--A dash mounted battery monitor gauge that tells me when I should switch batteries to fresh ones, again to not deplete any one battery too much. I use a Newmar DCE Energy Monitor.
--Battery switches in OFF postion anytime the boat is in storage.
--Maintenance of all terminals every 60 days. All terminals loosened, cleaned, and dielectric grease reapplied

Everyone needs to read "The 12V bible."

The battery I recommend [is the AGM battery by Cabela's].

gorji posted 08-08-2006 01:14 PM ET (US)     Profile for gorji  Send Email to gorji     
When your 4 batteries are being charged, what position is your switch on? (1,2, or ALL or OFF).

Do all of your AGMs deepcycle batteries?

Is there harm to have say 1 starting battery and 3 deep cycle?

gorji posted 08-08-2006 01:16 PM ET (US)     Profile for gorji  Send Email to gorji     
Let me revise the post:

When your 4 batteries are being charged, what position is your switch on? (1,2, or ALL or OFF). Is the charger mobile (is it integrated in the circuit) or do you alligator clip it to one of the batteries?

Are all of your AGMs deep cycle batteries?

Is there harm to have say 1 starting battery and 3 deep cycle?

glen e posted 08-08-2006 02:14 PM ET (US)     Profile for glen e  Send Email to glen e     
the beauty of the cabellas agm.. is it is a dual puropose battery - it has the reserve AND the amps needed to do both....
glen e posted 08-08-2006 02:17 PM ET (US)     Profile for glen e  Send Email to glen e     
my charger is hard wired into the boat - it is a Promariner 300 smartcharger with 4 leads - one set per battery - batt switch position is immaterial as the combiner "connects" all 4 batteries when charging. When discarging, they disconnect and starting power of left bank is protected against drain.
fyremanscott posted 08-08-2006 06:40 PM ET (US)     Profile for fyremanscott  Send Email to fyremanscott     
As far as batteries...

I use two DF-180's Gel Praviler batteries in my Montauk...
They are German and yes they are expensive... They last for 10 years and I just ordered my 3rd set for my 89 Montauk... Never had a problem... I run a full E120 RayMarine system including radar and charge off a Mercury 100 HP outboard... These batteries list for about $283.00 a
piece and are 66 lbs each. I know where you can get them cheaper!

Hope this helps~

gorji posted 08-08-2006 07:22 PM ET (US)     Profile for gorji  Send Email to gorji     
Nice!!!!!!!

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