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04-04-2015, 09:57 AM
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#1
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Guru
Join Date: Apr 2009
Posts: 1,920
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Source for AGM Batteries
I need to replace one of the 4 AGM batteries that make up my house bank. The other 3 are East Penn 105 AH AGM's so I guess I should stay with the same make and size for the fourth.
I also need to change the engine start battery, I only have one. The current AGM battery won't hold a charge. I need to stay with an AGM because viewing and servicing it is impossible and would requiring removing 3 house batteries to get to.
Any suggestions on sources to purchase a East Penn AGM 105 AH and I suppose any AGM will do for the engine start?
__________________
Tim
Tampa Bay
Carver 355 ACMY Twin Cummins Diesels Sold
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04-04-2015, 10:28 AM
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#2
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Senior Member
City: MD
Vessel Name: Blue Yonder
Vessel Model: 37
Join Date: Mar 2013
Posts: 346
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Same technology (AGM) is important within a bank. I doubt it is important to stay with the same brand. Right up the road from you in Annapolis is Steven's Battery Warehouse, 1900 Forest Drive, Annapolis. I have purchased batteries from them for years. They sell DEKA AGMs (which is an East Penn brand battery).
For an AGM starting battery, I don't think you can beat the Diehard Platinum Marine group 31. The battery is made by Odyssey and provides 1150 CCA. I use three of these in my start/thruster bank. The Diehard also has a three year replacement warranty.
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04-04-2015, 10:44 AM
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#3
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Valued Technical Contributor
City: Litchfield, Ct
Join Date: Aug 2012
Posts: 6,785
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Walmart Super Stores have AGM batteries as does Sams Club which are 10-15% cheaper. You can mix brands of AGMs just fine in one bank.
And BlueYonder has 3450 CCAs of starting/thruster capacity? Wow, what are you starting, a locomotive engine?
David
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04-04-2015, 10:51 AM
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#4
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Guru
Join Date: Apr 2009
Posts: 1,920
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OK, thanks guys. I talked to Eric at Stevens Battery Warehouse and they have the cheapest prices I've found on Decca 110 AH AGM's, $219. I'll pick up 2 on the way to the boat week after next.
__________________
Tim
Tampa Bay
Carver 355 ACMY Twin Cummins Diesels Sold
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04-04-2015, 10:53 AM
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#5
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Senior Member
City: MD
Vessel Name: Blue Yonder
Vessel Model: 37
Join Date: Mar 2013
Posts: 346
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Quote:
Originally Posted by djmarchand
Walmart Super Stores have AGM batteries as does Sams Club which are 10-15% cheaper. You can mix brands of AGMs just fine in one bank.
And BlueYonder has 3450 CCAs of starting/thruster capacity? Wow, what are you starting, a locomotive engine?
David
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Not needed for starting the motor. Running two thrusters (bow and stern) at the same time does use a lot of current. Each one requires 1400 cca for full thrust according to the manual.
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04-04-2015, 02:00 PM
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#6
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Senior Member
City: Florida USA and Ontario Canada
Vessel Name: anytime
Vessel Model: 2007 Chaparral 270 Signature LOA 29'
Join Date: Jan 2014
Posts: 301
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Quote:
Originally Posted by BlueYonder
For an AGM starting battery, I don't think you can beat the Diehard Platinum Marine group 31. The battery is made by Odyssey and provides 1150 CCA. I use three of these in my start/thruster bank. The Diehard also has a three year replacement warranty.
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+1 ... I had replaced all my various starting and house batteries with one type/size, G31 Diehard Platinum Marine dual purpose battery. I did a bit of research and from the info provided on Odyssey site this battery is well engineered for its intended purpose.
__________________
Best ... Richard
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04-04-2015, 02:52 PM
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#7
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Guru
City: Concrete Washington State
Vessel Name: Willy
Vessel Model: Willard Nomad 30'
Join Date: Oct 2007
Posts: 18,743
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For a start batt I use the Optima blue top AGM
My house bank is Blue River ... something River anyway. Recomended by and purchased at Boat Electric on Westlake ave in Seattle.
I think my start batt is 1100 CCA. (100 cu in engine)
I have all AGM batts as the charger is set up for that charge rate and voltage.
Boat electric is great for info on the phone ... Call them.
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Eric
North Western Washington State USA
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04-04-2015, 03:03 PM
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#8
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Senior Member
City: MD
Vessel Name: Blue Yonder
Vessel Model: 37
Join Date: Mar 2013
Posts: 346
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I bought my Victron charger from Boat Electric. They were very helpful.
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04-04-2015, 05:34 PM
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#9
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Guru
City: Punta Gorda, FL
Vessel Name: Aweigh
Vessel Model: Nordic Tug 42
Join Date: Jun 2014
Posts: 628
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Electro Battery in St. Pete. 727-323-4848 is where I bought my last AGM. Very good prices.
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04-04-2015, 07:38 PM
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#10
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Senior Member
City: Benicia CA
Join Date: Mar 2012
Posts: 499
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Unfortunately (and surprisingly) Boat Electric in Seattle is out of business.
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