Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 01-10-2012, 12:35   #1
Mike
 
msrcal36's Avatar

Cruisers Forum Supporter

Join Date: May 2008
Location: Richmond YC, SF Bay
Boat: 1974 Cal Cruising 35
Posts: 101
12v and 24v battery banks

On our "new" old boat a '77 Moody 42 PH Ketch we have two battery banks: 24v for main engine and many systems and lights and 12v for starter on gen set and various instruments and radios. My question: can I charge my 12v bank (2 group 29 105 ah) by linking (with battery isolater) to one of the 12v batteries that make up the 24v bank??
Many thanks,
Mike
__________________

__________________
msrcal36 is offline   Reply With Quote
Old 01-10-2012, 17:37   #2
Commercial Member
 
CharlieJ's Avatar

Cruisers Forum Supporter

Join Date: Dec 2008
Location: St. Petersburg, FL
Boat: Gulfstar Long Range Trawler; 53'; BearBoat
Posts: 835
Re: 12v and 24v battery banks

This unit from Sterling will do the trick: 24v to 12v charging, battery to battery charger, marine grade
__________________

__________________
Charlie Johnson
JTB Marine Corporation
"The Devil is in the details and so is salvation."
CharlieJ is offline   Reply With Quote
Old 02-10-2012, 07:54   #3
Mike
 
msrcal36's Avatar

Cruisers Forum Supporter

Join Date: May 2008
Location: Richmond YC, SF Bay
Boat: 1974 Cal Cruising 35
Posts: 101
Re: 12v and 24v battery banks

Thanks for the response.
__________________
msrcal36 is offline   Reply With Quote
Old 02-10-2012, 11:00   #4
Registered User

Join Date: May 2011
Posts: 132
Re: 12v and 24v battery banks

Put a 12 V alternator on the main engine. Most probably the same cost or cheaper and no chance of running the 24 V bank down. Just MY $.02, Mike.
__________________
Florida Mike is offline   Reply With Quote
Old 02-10-2012, 11:18   #5
Registered User

Join Date: Dec 2008
Boat: Journeyman
Posts: 705
Re: 12v and 24v battery banks

The Sterling charger will only charge the 12V bank if the 24V is full. Works very well, and easier to install than an alternator. I have one myself, one of the few pieces of equipment that has "just worked".

If you just hook your 12V to half of the 24V you will have inbalanced charging currents between the two halves of the 24V bank. Not recommended.
__________________
JesperWe is offline   Reply With Quote
Reply

Tags
battery

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 23:08.


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.