Beef Up Battery Plate - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > General Interest Forums > Gear & Maintenance
 Not a Member? 
  #1  
Old 04-29-2013
Member
 
Join Date: Apr 2008
Location: Wisconsin
Posts: 51
Thanks: 1
Thanked 0 Times in 0 Posts
Rep Power: 7
cas8100 is on a distinguished road
Beef Up Battery Plate

I have a Catalina 22 and am planning to move the battery location from the starboard aft factory location to directly under the cockpit (behind where the cooler would fit in the companionway.

The reason for doing this is that I want to put a bigger 120 AH battery in there that is wider than a "standard" 12 volt battery. My concern is that a 120 AH battery weighs just shy of 75 lbs and I'm concerned about the forces being placed on the bottom of the boat.

The location is aft of the keel, but still in an area that should be fairly beefy. I was considering glassing a fiberglass mat down first, followed by a wood frame that would ensure the battery doesn't slide around. However, there is a slight curve to the bottom and I'm wondering if I need something else to help spread out the load.

Any thoughts?

Thanks.
Attached Thumbnails
Beef Up Battery Plate-img_20130429_095449_173%5B1%5D.jpg   Beef Up Battery Plate-img_20130429_095504_781%5B1%5D.jpg  
Reply With Quote Share with Facebook
  #2  
Old 04-29-2013
sailvayu's Avatar
Senior Member
 
Join Date: Feb 2013
Location: Wilmington, NC, for now
Posts: 124
Thanks: 0
Thanked 5 Times in 5 Posts
Rep Power: 2
sailvayu is on a distinguished road
Re: Beef Up Battery Plate

The battery needs to be in a box or tray to hold spilled electrolyte. It also needs to be secured so that is does not move more than 1" in any direction. You also want to make sure you have some ventilation for the gases given off during charging. Other than that it should be ok, the hull should be able to take that weight no problem. The other thing I see is it would be hard to check and add water when needed.
__________________
Capt. Wayne Canning, AMS

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Share with Facebook
  #3  
Old 04-29-2013
Senior Member
 
Join Date: Feb 2010
Location: Narragansett Bay
Posts: 8,241
Thanks: 6
Thanked 87 Times in 84 Posts
Rep Power: 6
Minnewaska will become famous soon enough Minnewaska will become famous soon enough
Re: Beef Up Battery Plate

Ditto on containing spills. You also need to have it strapped down, so it can't come out during a knock down or get any momentum to break the container.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Jeanneau 54DS

In the harsh marine environment, something is always in need of repair. Margaritas fix everything.
Reply With Quote Share with Facebook
  #4  
Old 04-29-2013
Member
 
Join Date: Apr 2008
Location: Wisconsin
Posts: 51
Thanks: 1
Thanked 0 Times in 0 Posts
Rep Power: 7
cas8100 is on a distinguished road
Re: Beef Up Battery Plate

I was going to make a frame out of 1" x 1" (like picture frame) and glass it in place. I'd mount straps there to keep it from shifting. It's a sealed, non-spillable AGM so I shouldn't have to worry about liquid or even venting requirements. It is a a fairly open space anyhow.

I was most worried about the pressure points created at the four corners of the battery. Thought maybe a fiberglass mat glassed in right below would help protect the hull.
Reply With Quote Share with Facebook
  #5  
Old 04-29-2013
Senior Member
 
Join Date: May 2007
Location: Toronto, Canada
Posts: 213
Thanks: 0
Thanked 7 Times in 7 Posts
Rep Power: 7
SVTatia is on a distinguished road
Re: Beef Up Battery Plate

Off topic but an important factor is the battery orientation, (port-starboard or fore and aft. See this excellent Maine Sail post:
Installation & Orientation of Flooded Batteries - SailboatOwners.com
Reply With Quote Share with Facebook
  #6  
Old 04-29-2013
mad_machine's Avatar
Sea Sprite 23 #110 (20)
 
Join Date: Dec 2012
Location: Atlantic City, NJ
Posts: 2,910
Thanks: 5
Thanked 57 Times in 48 Posts
Rep Power: 2
mad_machine is on a distinguished road
Re: Beef Up Battery Plate

AGM, he should not have to worry about orientation as they are not a flooded battery.

If you are going to build a box to put it in, why not build up the "floor" of the box so that the battery sits flat on it. This would equalize the weight over the entire area of the box you are glassing into the hull rather than worrying about stress risers from the corners of the battery
__________________
Art Haberland
__________________

In the end all that matters is how fully you loved, how gently you lived, and how gracefully you let go of things that did not belong to you -buddha
Reply With Quote Share with Facebook
  #7  
Old 04-29-2013
Senior Member
 
Join Date: May 2007
Location: Toronto, Canada
Posts: 213
Thanks: 0
Thanked 7 Times in 7 Posts
Rep Power: 7
SVTatia is on a distinguished road
Re: Beef Up Battery Plate

Quote:
Originally Posted by mad_machine View Post
AGM, he should not have to worry about orientation as they are not a flooded battery...
Absolutely right - but where does the OP mention AGM? Our posts crossed over the cybersphere...
Reply With Quote Share with Facebook
  #8  
Old 04-30-2013
Senior Member
 
Join Date: Feb 2010
Location: Narragansett Bay
Posts: 8,241
Thanks: 6
Thanked 87 Times in 84 Posts
Rep Power: 6
Minnewaska will become famous soon enough Minnewaska will become famous soon enough
Re: Beef Up Battery Plate

Quote:
Originally Posted by cas8100 View Post
.....It's a sealed, non-spillable AGM so I shouldn't have to worry about liquid or even venting requirements......
Quote:
Originally Posted by SVTatia View Post
Absolutely right - but where does the OP mention AGM?.........
Although orientation is not an issue, the battery box should be flat and completely secure. While a cracked AGM will not spill, it's still a bad thing.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Jeanneau 54DS

In the harsh marine environment, something is always in need of repair. Margaritas fix everything.
Reply With Quote Share with Facebook
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
mast deck hinge plate and halyard organizer plate on spirit 23 Southron Spirit North American Yachts 4 03-31-2012 05:59 PM
Battery Chargers for Multiple Battery Banks btrayfors Electrical Systems 5 11-15-2009 11:57 AM
New Battery charger (unplugged) causes spark on battery post!! Northeaster Gear & Maintenance 15 11-17-2008 08:30 PM
Sizing a Battery Charger for Windlass Battery btrayfors Gear & Maintenance 9 04-11-2007 12:43 AM
Spicy Beef Dip Sue & Larry Cruising Articles 0 12-31-1998 07:00 PM


All times are GMT -4. The time now is 11:46 AM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012