Beef Up Battery Plate - SailNet Community
 
LinkBack Thread Tools
post #1 of 8 Old 04-29-2013 Thread Starter
Member
 
Join Date: Apr 2008
Location: Wisconsin
Posts: 53
Thanks: 1
Thanked 0 Times in 0 Posts
Rep Power: 8
 
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
IMG_20130429_095449_173[1].jpg   IMG_20130429_095504_781[1].jpg  
cas8100 is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 8 Old 04-29-2013
Senior Member
 
sailvayu's Avatar
 
Join Date: Feb 2013
Location: Ft Myers, FL, for now
Posts: 197
Thanks: 1
Thanked 15 Times in 13 Posts
Rep Power: 3
 
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.
sailvayu is offline  
Quote Quick Reply Share with Facebook
post #3 of 8 Old 04-29-2013
Senior Member
 
Join Date: Feb 2010
Location: Narragansett Bay
Posts: 11,259
Thanks: 46
Thanked 241 Times in 225 Posts
Rep Power: 7
   
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.
Minnewaska is offline  
Quote Quick Reply Share with Facebook
post #4 of 8 Old 04-29-2013 Thread Starter
Member
 
Join Date: Apr 2008
Location: Wisconsin
Posts: 53
Thanks: 1
Thanked 0 Times in 0 Posts
Rep Power: 8
 
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.
cas8100 is offline  
Quote Quick Reply Share with Facebook
post #5 of 8 Old 04-29-2013
Senior Member
 
Join Date: May 2007
Location: Toronto, Canada
Posts: 385
Thanks: 0
Thanked 25 Times in 25 Posts
Rep Power: 9
 
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
SVTatia is offline  
Quote Quick Reply Share with Facebook
post #6 of 8 Old 04-29-2013
Sea Sprite 23 #110 (20)
 
mad_machine's Avatar
 
Join Date: Dec 2012
Location: Atlantic City, NJ
Posts: 3,217
Thanks: 5
Thanked 69 Times in 60 Posts
Rep Power: 3
 
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

__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
mad_machine is offline  
Quote Quick Reply Share with Facebook
post #7 of 8 Old 04-29-2013
Senior Member
 
Join Date: May 2007
Location: Toronto, Canada
Posts: 385
Thanks: 0
Thanked 25 Times in 25 Posts
Rep Power: 9
 
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...
SVTatia is offline  
Quote Quick Reply Share with Facebook
post #8 of 8 Old 04-30-2013
Senior Member
 
Join Date: Feb 2010
Location: Narragansett Bay
Posts: 11,259
Thanks: 46
Thanked 241 Times in 225 Posts
Rep Power: 7
   
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.
Minnewaska is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



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

Posting Rules  
You may post new threads
You may 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome