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12-03-2015, 17:49
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#31
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Registered User
Join Date: Apr 2007
Location: Marina del Rey, California
Boat: President 43 Sportfish
Posts: 4,105
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Re: Batteries Too Big To Install?
Quote:
Originally Posted by funjohnson
Trojan recommends a charging source of 20% bank size to keep times down. I can't see having such a large bank in a light displacement sailboat and needing hours of engine run time to bring it back up.
Matt
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Matt--in aggregate his charging system sounds up to it. And you won't notice the weight if it's right over the keel. L16's also provide among the highest number of discharge cycles.
__________________
1st rule of yachting: When a collision is unavoidable, aim for something cheap.
"whatever spare parts you bring, you'll never need"--goboatingnow
"Id rather drown than have computers take over my life."--d design
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12-03-2015, 18:30
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#32
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Registered User
Join Date: Aug 2014
Location: Astoria, NY
Boat: Sabre 38
Posts: 566
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Re: Batteries Too Big To Install?
TN, one problem is the weight won't be right over the keel. Maybe half way between if and the water line.
Sent from my iPhone using Cruisers Sailing Forum
__________________
Stephen
s/v Carpe Ventum
1983 Sabre 38
My Intro
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12-03-2015, 18:45
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#33
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Registered User
Join Date: Apr 2007
Location: Marina del Rey, California
Boat: President 43 Sportfish
Posts: 4,105
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Re: Batteries Too Big To Install?
How far from centerline, enough to require adding ballast elsewhere?
__________________
1st rule of yachting: When a collision is unavoidable, aim for something cheap.
"whatever spare parts you bring, you'll never need"--goboatingnow
"Id rather drown than have computers take over my life."--d design
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12-03-2015, 18:55
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#34
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Marine Service Provider
Join Date: Jan 2007
Location: Maine
Boat: CS-36T - Cupecoy
Posts: 3,197
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Re: Batteries Too Big To Install?
L-16's are considerably easier to move than 4D or 8D's.. Consider a good mountaineering back pack for getting each battery on board.. I do it quite frequently and the handles on the Trojan's are good..
BTW Dyno Battery has some excellent L-16 boxes.....
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13-03-2015, 05:50
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#35
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Registered User
Join Date: Aug 2012
Location: Maryland, USA
Boat: 58' Sedan Bridge
Posts: 5,420
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Re: Batteries Too Big To Install?
Quote:
Originally Posted by fallingeggs
I technically have room for four Trojan L16H's under the quarter berth in my 38 footer. I’m a young guy, but dang these 125 pound batteries are going to be a pain to get onto the boat, down the companionway, up onto the berth then (finally) down into the berth’s storage locker. Even if I figured out how to get them down there, uninstalling them at the end of their life will be more of a challenge.
From a practical perspective, what do people think about down grading in size to Trojan J305H's at 25 pounds less and four inches shorter, which I feel can I can handle?
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Using Lifeline specs, there's a GC2 (4CT) at 220 Ah/66-lbs, and then another slightly taller version (6CT) at 300 Ah/90-lbs. Their L16T is 400 Ah/119-lbs.
Perhaps the 6CT is like Trojan's J305H? If so, and if Trojan's specs are similar, a bank of 4 for 600 Ah total isn't chump change.
-Chris
__________________
Chesapeake Bay, USA.
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13-03-2015, 08:25
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#36
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Registered User
Join Date: Oct 2014
Location: Panama City Beach, FL
Boat: Beneteau 343
Posts: 536
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Re: Batteries Too Big To Install?
I am in the process of converting to GC2 6 volt batts. I didn't buy Trojans and didn't get them from Sam's Club. I have had great service from Interstate Batteries in the past and the store manager gave me a good deal on 4 GC2s each with 230 AH at 6 volts. I think I am going to be happy with my solution.
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13-03-2015, 12:52
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#37
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Registered User
Join Date: Mar 2013
Posts: 12
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Re: Batteries Too Big To Install?
Quote:
Originally Posted by fallingeggs
I have been going back and forth on this issue and I can’t land on what to do. Figure I’d seek sage advice from those on this forum.
I technically have room for four Trojan L16H's under the quarter berth in my 38 footer. I’m a young guy, but dang these 125 pound batteries are going to be a pain to get onto the boat, down the companionway, up onto the berth then (finally) down into the berth’s storage locker. Even if I figured out how to get them down there, uninstalling them at the end of their life will be more of a challenge.
From a practical perspective, what do people think about down grading in size to Trojan J305H's at 25 pounds less and four inches shorter, which I feel can I can handle? That or any tips at getting the beastly L16H’s moved into place safely.
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Hi,
L16h BATTERIES are big batteries and can supply a lot of power, but every battery has to be given tender loving care and if you are going to install them where it will be a pain to get to then you'll probably revert to an out of sight, out of mind maintenance program.
Down grading to a smalller battery depends upon your need for power and the size of the charging system that you have.
Think it through carefully and totally. Good luck.
Howard R
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13-03-2015, 17:48
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#38
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Registered User
Join Date: Aug 2009
Location: Ontario, Canada
Boat: Challenger 32 1974
Posts: 523
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Re: Batteries Too Big To Install?
Archimedes used to say, in the Doric speech of Syracuse : “Give me a place to stand and with a lever I will move the whole world.”
Bill
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13-03-2015, 20:51
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#39
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Marine Service Provider
Join Date: Sep 2008
Location: Victoria B.C.
Boat: Wauquiez Centurion 32
Posts: 2,874
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Re: Batteries Too Big To Install?
Quote:
Originally Posted by funjohnson
With a 100 amp alt as your main charging source, I think you are also looking at too large of a battery bank to sufficiently charge. What are you using on your boat that you need 870 ah? If it is just the normal stuff, get a smaller bank and use the money for solar.
Matt
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It's not the size of the bank vs the charging source that really counts.
It is the size of the bank vs the daily usage.
For a given daily usage the larger the bank the lower the percentage used. If you have the space and the money the extra amp hours will keep the batteries in the top 25 - 30% rather than the top 50%.
The easiest way to improve a battery bank's life is to make it larger.
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