Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 08-02-2011, 05:35   #1
Registered User

Join Date: Jan 2010
Location: Durham, NC
Boat: 40 Caliber LRC
Posts: 132
Battery Bank Monitor

Asking for opinions. I know battery banks can vary depending on demands and equipment so I am looking for generalizations.

My boat is set up with 3 banks.
Bank1- 3 house batteries
Bank2- one battery for the engine
Bank3- one battery as backup for the engine

I have had a few boaters recommend the Pro-Link monitor, however, it will only monitor 2 banks. So to go with this system I could:

A) Connect battery 3 into the existing inverter/house bank, thus making one larger house bank consisting of four batteries

B) Use the remaining bank 2 battery for an engine starting battery


Just find a unit that will monitor 3 banks.


rnjpinz is offline   Reply With Quote
Old 08-02-2011, 05:50   #2
Registered User

Join Date: Feb 2009
Posts: 1,751
I would hook the 1 and 3 banks together Then have a sw that can connect them all in case the start battery quits on you You will be suprised at all the info the B M provides to you

motion30 is offline   Reply With Quote
Old 08-02-2011, 12:19   #3

Cruisers Forum Supporter

Join Date: Apr 2006
Posts: 12,077
Bob, I can't see a reason for Bank#3 since #2 should easily be able to start your engine. Depending on the age/capacity/condition you might combine #3 into something else, or just leave it unmonitored and get rid of it when it goes. Or sooner.

Paranoia can be a good thing, but there's no reason to buy into the PO's.
hellosailor is offline   Reply With Quote
Old 08-02-2011, 12:53   #4
noelex 77's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Location: Full time cruising. Currently in the Med.
Boat: Aluminium yacht
Posts: 10,008
The house bank does need careful monitoring. AHs and Amps in and out etc as well as Volts are all helpful perhaps even essential to monitoring the bank and establishing the level of charge.

The engine batteries are a different matter, they will be discharged very little. A simple Voltage reading is all that’s required, even this is not really necessary. (especially as you have 3 banks to start the engine)

(If you do decide to monitor the engine battery check the shunt size is OK with the starting current.)
noelex 77 is offline   Reply With Quote
Old 08-02-2011, 13:22   #5
Registered User
funjohnson's Avatar

Join Date: Mar 2010
Location: Currently Indiantown FL
Boat: 37' aluminum pilothouse "Elements"
Posts: 1,401
Bluesea VSM422 will monitor voltage on three banks. I have one (monitor just two banks, holding tank and bilge pump) and love the thing.
funjohnson is offline   Reply With Quote
Old 08-02-2011, 15:12   #6
Registered User

Join Date: Dec 2008
Location: Oriental, NC
Boat: Mainship Pilot 34
Posts: 1,429
I am not sure what a Pro-Link battery monitor is. But if you want to monitor the amp charge/discharge rate and the amphours added or used, then you need a battery monitor like the Xantrex Link or similar.

You only need to monitor your house battery. As others said the starting batteries never get discharged unless the batteries are bad or the charging circuit is bad.

So, combine battery 3 with the house bank and only monitor the house.

djmarchand is offline   Reply With Quote
Old 08-02-2011, 15:43   #7
Registered User

Join Date: Jan 2010
Location: Lost in Lupron'
Boat: Pearson 422 "Island Dream"
Posts: 61
Send a message via AIM to CaptPatAg
I just, I mean just finished installing a Xantrex monitor (the smaller one) that monitors the house bank (amps in, amps out plus voltage) and the starter battery voltage. I have decided to go with 55ah AGM batteries from SAM's at about $155.00 a pop. I will have 6 for the house bank and 2 for the starter bank. I had 4, 4D AGM's and cooked them with an old engine alternator, big $$$ and pi$$ed of wife. At any rate I will am going with the smaller batteries due to their lighter weight and easier handling. All that said, you can monitor the voltage on any number of battery banks with on meter and the right number of switches (spring loaded normally off). It's pretty simple to wire up. As mentioned earlier I would and have gone with the two bank system. Good luck. Pat

CaptPatAg is offline   Reply With Quote

battery, monitor

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
Which Battery Monitor ? theonecalledtom Electrical: Batteries, Generators & Solar 189 18-06-2016 13:12
6vdc Battery Bank westsailwill Electrical: Batteries, Generators & Solar 6 10-09-2010 12:28
Battery Bank Question unbusted67 Electrical: Batteries, Generators & Solar 3 28-01-2010 09:49
Is Our Battery Bank Dead? unbusted67 Electrical: Batteries, Generators & Solar 9 26-01-2010 00:56
Battery Monitor rleslie Electrical: Batteries, Generators & Solar 3 31-08-2005 01:31

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 00:15.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.