Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 07-11-2013, 08:07   #1
Registered User

Join Date: Apr 2012
Location: RI
Boat: Tartan 3800
Posts: 122
12volt 6 volt(12)

Is there a advantage or disadvantage and what is the difference between say a 100 amp 12 volt battery and say a 100 amp 2- 6 volt batteries?
__________________

__________________
bmm32005 is offline   Reply With Quote
Old 07-11-2013, 08:47   #2
Moderator
 
noelex 77's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Location: Living on dirt waiting for our new yacht to be built.
Boat: Half built Bestevaer.
Posts: 10,619
Re: 12volt 6 volt(12)

Usually 6v batteries are better deep cycle batteries than the equivalent 12v batteries (2v cells are often better again) from the same manufacturer.

You need 2x 100AHr 6v batteries to make a 12v 100Ahr battery bank.
__________________

__________________
noelex 77 is offline   Reply With Quote
Old 07-11-2013, 08:51   #3
Senior Cruiser
 
Vasco's Avatar

Cruisers Forum Supporter

Join Date: Apr 2004
Location: Toronto
Boat: CS36Merlin, "La Belle Aurore" Ben393 "Breathless"
Posts: 7,138
Re: 12volt 6 volt(12)

From a non electrical viewpoint, the 6 volts are lighter and easier to lug around, especially if the bank is in some god forsaken hole in the boat.
__________________
Rick I
Toronto in summer, Bahamas in winter.
http://groups.yahoo.com/group/beneteau393/
Vasco is offline   Reply With Quote
Old 07-11-2013, 09:25   #4
Registered User
 
denverd0n's Avatar

Join Date: Jun 2008
Location: Tampa, FL
Posts: 3,950
Images: 6
Re: 12volt 6 volt(12)

To elaborate on Vasco's answer... Roughly speaking, a 6 volt, 200 a/h battery will weigh neighborhood of half what a 12 volt, 200 a/h battery will weigh. Hence, for large banks, it is easier to move around a number of 6 volt batteries than it is to move around the equivalent a/h in 12 volt batteries.

The other issue is that in the U.S., 6 volt deep cycle batteries are used for golf carts. As such, it is easy to find relatively inexpensive, high capacity, 6 volt batteries that are truly made for serious deep cycle use.
__________________
denverd0n is offline   Reply With Quote
Old 11-11-2013, 05:31   #5
Registered User

Join Date: Apr 2012
Location: Marathon, FL
Boat: CSY 37 Plan B
Posts: 125
Re: 12volt 6 volt(12)

If you look at the rating for almost every 12v battery on the shelf you'll see an average of 300 cycles, 6v batteries are normally more than twice that number. The 215ah 6v Deka are rated at 700 cycles to 50% and the tall 370ah 6v 8L16 are rated to 1000 cycles! Heavier plates, more lead and a lot longer life are the reason I have 6v. My old boat I installed the big 370ah batteries, not a single complaint here!

The new boat has a bank consisting of 8 6v's for a total of 860ah
__________________
Thin Line 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




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 02:05.


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.