Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 12-03-2015, 07:46   #1
Senior Cruiser

Cruisers Forum Supporter

Join Date: Aug 2014
Location: Astoria, NY
Boat: Sabre 38
Posts: 496
Batteries Too Big To Install?

I have been going back and forth on this issue and I canít land on what to do. Figure Iíd 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. Iím 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 berthís 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 L16Hís moved into place safely.
__________________

__________________
Stephen

s/v Carpe Ventum
1983 Sabre 38
My Intro
fallingeggs is offline   Reply With Quote
Old 12-03-2015, 08:00   #2
Senior Cruiser
 
Blue Stocking's Avatar

Cruisers Forum Supporter

Join Date: Dec 2008
Location: St. Georges, Bda
Boat: Rhodes Reliant 41ft
Posts: 4,114
Re: Batteries Too Big To Install?

All comes down to how many amps do you need,-- and boat trim.
__________________

__________________
so many projects--so little time !!
Blue Stocking is offline   Reply With Quote
Old 12-03-2015, 08:08   #3
Registered User
 
funjohnson's Avatar

Join Date: Mar 2010
Location: Currently Indiantown FL
Boat: 37' aluminum pilothouse "Elements"
Posts: 1,846
Re: Batteries Too Big To Install?

500 pounds in the quarter berth of a Sabre seems like way too much for good trim. How is the boats waterline?

Matt
__________________
MJSailing.com - Written Blog
Youtube MJ sailing - Vlog
funjohnson is offline   Reply With Quote
Old 12-03-2015, 09:33   #4
Registered User

Join Date: Jan 2006
Location: North Carolina
Boat: 44 footer
Posts: 923
Re: Batteries Too Big To Install?

Personally, I'd be going with GC2's because they are manageable to deal with...

125 lbs is a bit much to deal with.

I just pulled an 8D house battery out of my boat last week, and won't be going with anything near that weight again. Getting it back up the companionway ladder and across to a dock took more than I like to give. That was to a fixed dock, at the tide just right so I could slide across the toe rail to the dock no less.
__________________
Zach is offline   Reply With Quote
Old 12-03-2015, 09:41   #5
Senior Cruiser

Cruisers Forum Supporter

Join Date: Nov 2012
Location: Long Beach, CA
Boat: Tayana Vancouver 42
Posts: 1,853
Re: Batteries Too Big To Install?

That is why I and many others have gone from 8Ds to 6 volt golf cart batteries.


S/V B'Shert
__________________
Tayana42 is offline   Reply With Quote
Old 12-03-2015, 09:57   #6
Senior Cruiser
 
Cheechako's Avatar

Cruisers Forum Supporter

Join Date: Aug 2006
Location: Skagit City, WA
Posts: 19,342
Re: Batteries Too Big To Install?

I would avoid 8D's for sure. No need for them. Also if one fails prematurely, you lose a big part of your battery bank. Coincidentally, I have had 2 8D's fail in the first year of use, shorted.
__________________
"I spent most of my money on Booze, Broads and Boats. The rest I wasted" - Elmore Leonard











Cheechako is offline   Reply With Quote
Old 12-03-2015, 10:06   #7
Senior Cruiser
 
senormechanico's Avatar

Cruisers Forum Supporter

Join Date: Aug 2003
Boat: Dragonfly 1000 trimaran
Posts: 5,825
Re: Batteries Too Big To Install?

Lithiums weigh only 50% or less and have much greater usable aH capacity.
There are lots of threads here about them.
I love mine !!
__________________
Memento,homo, quia pulvis es, et in pulverem reverteris.
senormechanico is offline   Reply With Quote
Old 12-03-2015, 10:17   #8
Registered User
 
Island Time O25's Avatar

Join Date: Sep 2014
Posts: 2,019
Re: Batteries Too Big To Install?

Apparently 6v golf cart batteries are all the rage now. And for good reasons. I am planning to change over to them either this spring or next, depending on finding a deal on 8 of them.

Last year a friend had an 8D fail. He still b*tches about his hurt back and fingers taking it out.
__________________
Island Time O25 is offline   Reply With Quote
Old 12-03-2015, 10:17   #9
Registered User
 
TacomaSailor's Avatar

Join Date: Nov 2012
Location: Burnt Store Marina, SW Florida
Boat: Caliber 40
Posts: 1,148
Re: Batteries Too Big To Install?

We used lead acid 8-Ds (158 pounds each) for the first seven years of cruising on our Caliber 40. When it came to change them out I had to hire three very strong, and young local guys who needed four hot sweaty hours to remove them.

Since then I have installed and replaced and reinstalled six T-105 lead acid batteries all by my lonesome and weak 60-something self.

The 8-Ds worked very well and if you can hire someone to do the work - they are great ... BUT a big heavy battery is a lot of work.
__________________
TacomaSailor is offline   Reply With Quote
Old 12-03-2015, 10:24   #10
Registered User
 
Stu Jackson's Avatar

Join Date: Jan 2011
Location: Cowichan Bay, BC (Maple Bay Marina)
Posts: 6,385
Re: Batteries Too Big To Install?

Maine Sail has written extensively about the fact that 8D and 4D batteries are NOT true deep cycle batteries, regardless of the stickers some vendors slap on them.
__________________
Stu Jackson
Catalina 34 #224 (1986) C34IA Secretary
Cowichan Bay, BC, (Maple Bay Marina) SR/FK, M25, Rocna 10 (22#) (NZ model)
Stu Jackson is offline   Reply With Quote
Old 12-03-2015, 10:24   #11
Senior Cruiser
 
Randyonr3's Avatar

Cruisers Forum Supporter

Join Date: Nov 2007
Boat: Beneteau FIRST 42
Posts: 1,836
Re: Batteries Too Big To Install?

I just re-installed the 4Ds on our boat... yep they are heavy but in our case, it's been 10+ years on this set so once every few years to be a "pita" is well worth it..
Put them in and forget about it..........
Attached Thumbnails
Click image for larger version

Name:	20150306_141750.jpg
Views:	164
Size:	402.5 KB
ID:	98768  
__________________
Randyonr3 is offline   Reply With Quote
Old 12-03-2015, 10:25   #12
Registered User
 
Cowboy Sailer's Avatar

Join Date: Aug 2007
Location: on the boat. Gulf Coast
Boat: C&C 38'
Posts: 351
Images: 2
Re: Batteries Too Big To Install?

At 70 years of age I removed all three 8D's by myself. Up the companionway, out the cockpit, onto the dock cart and to the trunk of my car. I replaced them with smaller!
__________________
Jerry and Denver
Happy Old cruisers!
Cowboy Sailer is offline   Reply With Quote
Old 12-03-2015, 10:32   #13
Registered User

Join Date: Oct 2010
Location: Abaco, Bahamas/ Western NC
Boat: Nothing large at the moment
Posts: 819
Re: Batteries Too Big To Install?

I had the strap break on an 8D, my friend held on to his end but the corner landed on my big toe. No more 8d's for me!
__________________
Tingum is offline   Reply With Quote
Old 12-03-2015, 10:41   #14
Registered User
 
TacomaSailor's Avatar

Join Date: Nov 2012
Location: Burnt Store Marina, SW Florida
Boat: Caliber 40
Posts: 1,148
Re: Batteries Too Big To Install?

Quote:
Originally Posted by Stu Jackson View Post
Maine Sail has written extensively about the fact that 8D and 4D batteries are NOT true deep cycle batteries, regardless of the stickers some vendors slap on them.
Maine Sail has a lot of great info and does some interesting tests.

Our 8-Ds were installed in March 1995 and were still working OK in December 2002 when we replaced them after two years of live aboard cruising. It is hard to ask for more than 7.5 years out of a battery bank.
__________________
TacomaSailor is offline   Reply With Quote
Old 12-03-2015, 11:24   #15
Registered User

Join Date: Jul 2013
Location: San Diego, CA
Posts: 3,157
Re: Batteries Too Big To Install?

Quote:
Originally Posted by Randyonr3 View Post
I just re-installed the 4Ds on our boat... yep they are heavy but in our case, it's been 10+ years on this set so once every few years to be a "pita" is well worth it..
Put them in and forget about it..........
The lifespan that you got out of those batteries was based on their capacity vs your daily usage. By only using 25% or 30% or somewhat less than 50%, you were lightly using those batteries, so they lasted 10 yrs.

If you had bought the same capacity in GC batteries, you would have gotten the same lifespan at the same charge/discharge rates that you used for the last 10 yrs. About 15 yrs ago I was talking to a battery distributor down near Sports Arena (a lot of small boat yards in the area) and a yacht owner brought in 2 out of his 8 GC batteries for load testing, he said they were 8 yrs old. The shop owner load tested them and said they were fine, they were in great shape especially for 8 yrs old. He recommended re-installing them and checking them again in a few more years.

About that same time, I looked over the entire line of 12v and 6v batteries from Trojan, and compared AH vs weight and found that the GC batteries were rated at higher AH per LB. When you get into larger batteries, more of the weight is in the case to provide more strength. Less lead + more case material = less AH of capacity.

Example: T105 is rated at 225AH @ 20H rate, weighs 62 lbs = 3.629 AH/lb.

The L16H is rated at 435AH @ 20H rate, weighs 125 lbs = 3.48 AH/lb.

The heavier battery is more difficult to move and install due to it's bulk, yet you'd get more energy density in a 62 lb package.
__________________

__________________
socaldmax is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Has Cruising Become Too Artificial, Too Expensive, Too Regulated ? Piney Our Community 66 26-07-2017 20:01
Going Solo - How Big Is Too Big? hoppy Monohull Sailboats 42 23-08-2016 17:16
How Big Is Too Big to Singlehand ? kcmarcet General Sailing Forum 29 01-06-2014 18:24
Wind Speed And Wave Size. How Big Is Too Big? SonjaD Health, Safety & Related Gear 16 30-08-2012 20:50
How big is too big? Capnlindy General Sailing Forum 98 04-06-2007 08:14



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 04:07.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.