Cruisers Forum
 


Join CruisersForum Today

Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 03-11-2016, 12:21   #1
Registered User
 
Delancey's Avatar

Join Date: Oct 2011
Location: Spain
Boat: Sunk by Irma
Posts: 3,565
Battery Bank Where?

Just curious to know where people have found the best location for a house battery bank to be? Maybe 400 amp hrs worth on a 40 foot monohull. What works and what doesn't and why.

Cheers
__________________

Delancey is offline   Reply With Quote
Old 03-11-2016, 12:41   #2
Senior Cruiser

Cruisers Forum Supporter

Join Date: Jun 2016
Boat: Jeanneau Sun Odyssey 409
Posts: 201
Re: Battery Bank Where?

In the aft cabins under the mattress would be my guess.
__________________

Cool Hand Luke is offline   Reply With Quote
Old 03-11-2016, 13:03   #3
Registered User
 
Delancey's Avatar

Join Date: Oct 2011
Location: Spain
Boat: Sunk by Irma
Posts: 3,565
Re: Battery Bank Where?

Maybe for some. In my case that space is taken up by my water tanks.
Delancey is offline   Reply With Quote
Old 03-11-2016, 13:23   #4
Registered User
 
TeddyDiver's Avatar

Join Date: Aug 2010
Location: Arctic Ocean
Boat: Under construction 35' ketch (and +3 smaller)
Posts: 2,044
Images: 2
Re: Battery Bank Where?

Down in the bilge. 35' semi long keel so got plenty of room 1100*300*800mm (l*w*h). Battery box is molded as a part of an integrated watertank. That's the plan anyway..
TeddyDiver is offline   Reply With Quote
Old 03-11-2016, 13:26   #5
Registered User
 
AnglaisInHull's Avatar

Join Date: May 2015
Location: Sailing Lake Ontario
Boat: Mirage 35
Posts: 671
Re: Battery Bank Where?

Keep balance in mind if the bank gets big enough. Was on a 33' boat this summer with an oversized house bank all on one side - had a visible heel while at the dock.
__________________
My boat is like me. People look, and say "... pretty good shape ... for its age ..."
AnglaisInHull is offline   Reply With Quote
Old 03-11-2016, 14:27   #6
֍֎֍֎֍֎֍֎֍֎

Cruisers Forum Supporter

Join Date: Apr 2006
Posts: 14,886
Re: Battery Bank Where?

Depends on what corners you want to cut. Ideally, at the base of the mast, to keep the mass near the boat's center of mass. Of course that's under foot. Or in the bilge to keep the weight low, except wet lead acid batteries give off chlorine gas and eat out your lungs and such if they get submerged with sea water, so they are best kept above the water line. Even the "we;re taking on water" waterline. And they emit explosive hydrogen gas during charging, so you might want a proper sealed battery box that is vented overboard, something else to trip over. Which leaves you to find a convenient spot, that won't require long cable runs, won't get tripped over, and compromises on everything else. Including access to check and water them.
hellosailor is offline   Reply With Quote
Old 03-11-2016, 15:06   #7
Registered User

Join Date: Nov 2012
Location: Long Beach, CA
Boat: Tayana Vancouver 42
Posts: 2,110
Re: Battery Bank Where?

Delancy, you already know about balance and weight and you know more about how your boat is currently configured than any of us do. Where were the batteries originally located and what options are you considering for battery placement?
Tayana42 is online now   Reply With Quote
Old 03-11-2016, 22:32   #8
Registered User

Join Date: Jun 2013
Location: canada
Posts: 2,306
Re: Battery Bank Where?

don't put batteries in the bilge. if the boat floods up to the floor boards you don't want them underwater. you want them powering the bilge pumps.

under salon seats is a common place. under beds. aft laz. totally depends on boat.
smac999 is offline   Reply With Quote
Old 03-11-2016, 23:40   #9
Registered User
 
UNCIVILIZED's Avatar

Join Date: Jun 2014
Location: Up the mast, looking for clean wind.
Boat: Currently Shopping, & Heavily in LUST!
Posts: 5,629
Re: Battery Bank Where?

Think short cable runs. Battery cable is pricey, & the longer the run, the less efficient the charging.
__________________

The Uncommon Thing, The Hard Thing, The Important Thing (in Life): Making Promises to Yourself, And Keeping Them.
UNCIVILIZED is offline   Reply With Quote
Old 04-11-2016, 01:31   #10
cruiser

Join Date: May 2014
Location: USA
Boat: 41' yawl
Posts: 897
Re: Battery Bank Where?

Quote:
Originally Posted by UNCIVILIZED View Post
Think short cable runs. Battery cable is pricey, & the longer the run, the less efficient the charging.
Good point.

But its such an overconstrained problem. Spending some dough and some time putting in giant copper cable to get your battery someplace thats above the waterline and well situated from a weight perspective could be time and money well spent...

(My 400ah of house bank in a 40ft mono is in the vberth. Two batteries each as far aft as possible under each bunk. Previous owner must have spent some bucks on the cable, its massive.)
chris95040 is offline   Reply With Quote
Old 04-11-2016, 01:42   #11
Registered User
 
TeddyDiver's Avatar

Join Date: Aug 2010
Location: Arctic Ocean
Boat: Under construction 35' ketch (and +3 smaller)
Posts: 2,044
Images: 2
Re: Battery Bank Where?

Quote:
Originally Posted by smac999 View Post
don't put batteries in the bilge. if the boat floods up to the floor boards you don't want them underwater. you want them powering the bilge pumps.

under salon seats is a common place. under beds. aft laz. totally depends on boat.
Agree, they are a hazard if unprotected in the bilge. But placed in a proper separately ventilated battery box (as they should) not so...

BR Teddy
TeddyDiver is offline   Reply With Quote
Old 04-11-2016, 01:52   #12
cruiser

Join Date: May 2014
Location: USA
Boat: 41' yawl
Posts: 897
Re: Battery Bank Where?

Quote:
Originally Posted by TeddyDiver View Post
Agree, they are a hazard if unprotected in the bilge. But placed in a proper separately ventilated battery box (as they should) not so...

BR Teddy
With the wiring running into it, how are you sealing it such that it won't just slowly fill with water in an oh-s@&t scenario?

And it must have some sort of lid to access the batteries, so its hard for me to see how this winds up any better than just having them out on their own in the bilge..
chris95040 is offline   Reply With Quote
Old 04-11-2016, 03:43   #13
Registered User
 
TeddyDiver's Avatar

Join Date: Aug 2010
Location: Arctic Ocean
Boat: Under construction 35' ketch (and +3 smaller)
Posts: 2,044
Images: 2
Re: Battery Bank Where?

Quote:
Originally Posted by chris95040 View Post
With the wiring running into it, how are you sealing it such that it won't just slowly fill with water in an oh-s@&t scenario?

And it must have some sort of lid to access the batteries, so its hard for me to see how this winds up any better than just having them out on their own in the bilge..
Same as other wiring and piping, run higher above the cabin sole when not sealed through bulkheads. Battery box lid is a part of flooring. Water tight bulkheds in the bilge between sterntube / engine compartment / battery box / anchor rode locker / composting compartment plus two water tanks. Two of these, engine compartment and battery box, have easy access from above (not totally water tight) below the waterline but cabin bulkheads have sils well above the waterline to separate them.
Just few details quite easy to accomplish with one-off design but mostly omitted in standard production boats.

BR Teddy
TeddyDiver is offline   Reply With Quote
Old 04-11-2016, 04:14   #14
Registered User

Join Date: Jul 2015
Location: Orential N.C.
Boat: 1981 Morgan OI 41
Posts: 162
Re: Battery Bank Where?

Charley Morgan put mine in the engine room just inside the door for easy access, he's a smart feller he is.
Salty Mike is offline   Reply With Quote
Old 04-11-2016, 05:27   #15
Registered User
 
Delancey's Avatar

Join Date: Oct 2011
Location: Spain
Boat: Sunk by Irma
Posts: 3,565
Re: Battery Bank Where?

I currently have two group 27s in my engine compartment. Working with a limited budget right now and might not go all out for the 400 amp hr bank up front but whatever I do I would like to have the option to expand down the road.

Combining the two group 27s as a house bank and adding another starter battery somewhere would meet my immediate needs and allow me to put off dealing with this until another day.

I do have some real estate beneath the cockpit aft of the engine where a water heater used to be that I have been saving to a special occasion.

Putting the house bank there would give me the shortest run and I think the boat would accept the weight there just fine. Down side is that it is a little tight to access.

Alternately, beneath the settees could be an option. Would be a lot of cable but easy access. Anyone split their house bank like this between two locations port and starboard?
__________________

Delancey is offline   Reply With Quote
Reply

Tags
battery

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
Single bank Battery Monitor with Automatic Charging Relay to starting bank as a load? Zach Marine Electronics 5 23-04-2016 16:26
36vdc Motor Bank and 12vdc House Bank bobola Electrical: Batteries, Generators & Solar 24 22-12-2009 21:30



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 13:01.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.