Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 21-04-2016, 04:34   #1
Registered User

Join Date: Apr 2016
Posts: 1
Battery charging

My boat has a starter battery and a separate house battery which is charged by a 220 V charger.
In what case can both batteries be charged from the same source and how should they be connected?
__________________

__________________
Wernito is offline   Reply With Quote
Old 21-04-2016, 06:46   #2
Moderator
 
a64pilot's Avatar

Cruisers Forum Supporter

Join Date: Oct 2013
Location: Albany Ga.
Boat: Island Packet 38
Posts: 17,051
Re: Battery charging

Most good chargers will charge up to three banks, simultaneously.
I'd first verify that your charger is a multi stage "smart" charger that monitors battery temp and adjusts charging voltage based on temp, and has multiple charging profiles for different battery types ,and ideally a programmable profile where you determine voltages.
If it doesn't, then you may want to consider replacing it.
I said may, boats have had "dumb" chargers forever and not sunk, but there is better technology available, if you don't already have it.
__________________

__________________
a64pilot is offline   Reply With Quote
Old 21-04-2016, 07:07   #3
Senior Cruiser

Cruisers Forum Supporter

Join Date: Aug 2009
Location: between the devil and the deep blue sea
Boat: a sailing boat
Posts: 17,314
Re: Battery charging

Our shore charger charges one bank only so I swap the red cable between the banks.

Our alternator charges the motor battery and a small Bosch relay relays the charge to the house battery (again, red wire only) - only when the alt is working.

b.
__________________
barnakiel is offline   Reply With Quote
Old 21-04-2016, 07:11   #4
Registered User

Join Date: Apr 2011
Location: Edmonds, WA
Boat: Wauquiez Amphitrite - 43' Ketch
Posts: 159
Re: Battery charging

We have a Blue Sea automatic charging relay. Once the voltage hits a certain point, just over 13v, it bridges the two banks so any of our charge sources will charge both banks. The battery chemistries should be the same.


Sent from my iPhone using Cruisers Sailing Forum
__________________
ScottMeilicke is offline   Reply With Quote
Reply

Tags
battery, charging

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
charging a small battery from a larger battery danielb Electrical: Batteries, Generators & Solar 15 26-01-2015 18:22
Battery Charging, Battery Return amps and Victron inthejungle Marine Electronics 2 16-09-2013 13:36
Generator battery charging question? avazquez Electrical: Batteries, Generators & Solar 4 10-09-2007 07:47
Battery Ventilation when ‘Fast’ Charging GordMay Electrical: Batteries, Generators & Solar 20 05-04-2006 13:27
charging relay for generator battery jerry f Electrical: Batteries, Generators & Solar 2 06-07-2005 05:05



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 03:46.


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.