Best cranking battery for 225 pro xs Best cranking battery for 225 pro xs
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    Best cranking battery for 225 pro xs
from mandj518vx  
3/17/2010 3:58:21 PM


 Looking for opinions for the best cranking battery for a 2009 Mercury Optimax 225 Pro XS. Will also be used to power all electronics. Does battery need to have 1000 CCA ?

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   cranking amps from Smittyquick5 #16345  3/17/2010 4:32:22 PM
  1000 Marine Cranking Amps (MCA) or 750 Cold Cranking AMPS (CCA) I have a Deka for my cranking battery

Edited 3/17/2010 4:33:03 PM

   yep you need the amperage from jbz7 #13144  3/17/2010 4:46:24 PM
  I run a cabales advanced angler agm for mine. They make a group 24 and a group 27 that both meet the spec.

Here is a thread over on the other site that has a list of batteries that will work.

   Stay away from group 24 batteries...... from Mike Whitten  3/17/2010 6:05:23 PM
 ....They have the initial amperage to crank your engine, but run waaay short on staying power to run all the other 12 volt accessories.

Get the biggest 30/31 series you can afford. I've used Trojan SCS 225 as my cranking and trolling batteries for years, and have had not one problem.

Mike Whitten/Germantown, TN

   Mercury from MikeF  3/17/2010 6:46:14 PM
 Mercury recommends an 1000 MCA AGM for their Verado and Opti O/B. Right now Cabela's seems to have the best price. I would go with at least a size 27.

   that ain't no joke.. from HouBroDini  3/17/2010 6:56:06 PM

you can't buy too big as long as it fits.. I wouldn't consider any cranking battery under 1000 or smaller than group 27..

recently purchased a Duralast from Autozone for around $85.. comes with one year full replacement three year prorated and serves my purposes..

   Dual batteries from Spookchucker #10778  3/17/2010 7:42:19 PM
 I run a 4 battery 36 volt system, with two batteries in parallel. This doubles the cranking amps and reserve,and no danger of a low battery by running the accessories all day.

   parallel batteries from dre1965 #12981  3/17/2010 10:08:28 PM
 Do they have to be the same CCA/MCA? I also bought the duralast from autozone, but afraid I will kill my battery if I run my HD Humminbird too long.

   No, they don't from Spookchucker #10778  3/18/2010 5:49:13 AM
 Just add the 2 numbers up for the total CCA/MCA.

   SpookChucker, how do you??? from Mike Whitten  3/18/2010 8:13:24 AM
 ???Wire a four battery system to have two parallel in 12 volts, and still get 36v to trolling motor.

I THINK I understand this one, but am not sure, so I'm "axking".


   diagram from MikeF  3/18/2010 9:48:00 AM
 I can draw a wiring diagram on how to do it with one Perko style switch if that will help. I can scan and post it as a PDF.

   Batteries from mofishin #10690  3/18/2010 10:43:17 AM
 I use 2 Interstate batteries 1000 CCA each for my cranking. Before I added the second battery on a long day I would be getting a low voltage alarm on my electronics. Never had a problem since.

   Mike Whitten - It's pretty simple from Spookchucker #10778  3/18/2010 5:11:25 PM
 The easiest way is to set up your 36 V troller system, isolated from the rest of the boat. Then just run battery cables from the end troller to the main battery (+ to + and - to -), just like you would if you were using jumper cables to start a dead battery.

Not only do you add cranking power and more reserve, but you charge one of the trollers every time you crank up & run.

   spook from MikeF  3/19/2010 9:11:11 AM
 Your way will work but I would highly recommend a switch.



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