Battery Type - 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 > On Board > Gear & Maintenance
 Not a Member? 
  #1  
Old 05-01-2010
Senior Member
 
Join Date: Oct 2008
Location: Ottawa Canada
Posts: 210
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
weephee is on a distinguished road
Battery Type

Can someone help me understand what type of battery I am supposed to have in my boat. I have room for two batteries and at present I have two deep cell batteries hooked up in parallel. The inboard atomic has an alternator. Should deep cell batteries be totally discharged before being recharged. If so then do I need a car battery for the boat engine which is constantly being charged while the engine is running or will the deep cell batteries work for both the engine starter as well as the boat lights etc. Confusing for me. Any help appreciated
Reply With Quote Quick reply to this message Share with Facebook
  #2  
Old 05-01-2010
SVPrairieRose's Avatar
Senior Member
 
Join Date: Oct 2009
Location: Vancouver BC
Posts: 227
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 6
SVPrairieRose is on a distinguished road
Well the only thing more confusing than the question is all all the different answers. I would suggest that two banks are a good idea depending on how you are using the boat. If you are starting the boat and leaving the dock and sailing right away and rarely using lights, or running electronics then one bank should be sufficient. If there are electronics on board and you stay aboard and drain your batteries you could find yourself without a way of starting up. As for your other question, deep cycle batteries should never be brought down below half charge. I would suggest two things. One is to have two banks, deep cycle for electronics and a start battery for starting. Two is having a charge combiner. This creates two seperit circuits and charges both together but only allows discharge of your house bank for house loads and uses only your start battery for starting. Both are always fresh and you never forget to flip the swtch and find yourself with a dead house bank after a day of motoring. Hope this helps.
Reply With Quote Quick reply to this message Share with Facebook
  #3  
Old 05-01-2010
JimsCAL's Avatar
Senior Member
 
Join Date: May 2007
Location: Glen Cove, NY
Posts: 2,496
Thanks: 2
Thanked 46 Times in 42 Posts
Rep Power: 8
JimsCAL is on a distinguished road
The deep cycles are fine for both starting and house use. You say they are in parallel. No Off-1-2-Both switch? If not, consider putting one in so you can run house loads off one and keep the other fully charged when not running the engine. Adding a combiner as SV suggests even better as it will avoid you having to remember to switch from both the 1 or 2 when you shut down the engine.
Reply With Quote Quick reply to this message Share with Facebook
  #4  
Old 05-02-2010
Senior Member
 
Join Date: Dec 2008
Posts: 114
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
donlofland is on a distinguished road
Can't hardly own a sailboat without also owning Nigel Calder's:
Boatowner's Mechanical And Electrical Manual: How To Maintain, Repair, And Improve Your Boat's Essential Systems

He details all the ins and outs of options for setting up your boats electrical system, and before I make any changes to mine, I'll read the chapter a couple more times.
Reply With Quote Quick reply to this message Share with Facebook
  #5  
Old 05-02-2010
tap tap is offline
Senior Member
 
Join Date: Apr 2009
Posts: 176
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 6
tap is on a distinguished road
Quote:
Originally Posted by weephee View Post
Should deep cell batteries be totally discharged before being recharged.
No! Deeply discharging your batteries is not good for them. It's pretty standard to connect deep cycle batteries like your to an alternator.
Reply With Quote Quick reply to this message 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:

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

 
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
Battery Bank Design Kevin Jeffrey Gear and Maintenance Articles 0 05-12-2003 09:00 PM
Battery Bank Design Kevin Jeffrey Cruising Articles 0 05-12-2003 09:00 PM
Installing a New Battery Bank Sue & Larry Gear and Maintenance Articles 0 09-26-2002 09:00 PM
Boat Battery Power East Penn Manufr. Gear and Maintenance Articles 0 01-18-1999 08:00 PM


All times are GMT -4. The time now is 05:26 PM.

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

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.