Go Back   Cruiser Log World Cruising & Sailing Forums > Cruising Forums > The Bosun's Locker > Repairs & Maintenance
Cruiser Wiki Click Here to Login

Join Cruiser Log Today

Thread Tools Search this Thread Display Modes
Old 08-03-2009, 11:59 PM   #15
delatbabel's Avatar
Join Date: Jul 2007
Posts: 699
Send a message via AIM to delatbabel

Originally Posted by Apolima View Post
Do not have a battery switch to connect to the house battery system.

If, in the remote case, the starting battery will not start the engine, use jumper cables in this emergency situation.

If you have a battery switch between starting and house systems it is too easy to forget that you left it on.
Of course this is where a VSR comes into play. I won't go into the full details, there are plenty of places on the internet where you can look up information. Basically the VSR connects the two batteries when the voltage at both is high (12.8V or over), meaning that a single charging circuit can charge both banks. When the voltage at either battery drops below 12.8V, e.g. as the house batteries discharge or the engine battery fires up the starter motor, the VSR disconnects the battery circuits. They are excellent set-and-forget devices.


= New South Wales, Queensland,
delatbabel is offline   Reply With Quote
Old 08-07-2009, 07:52 PM   #16
Join Date: Sep 2007
Posts: 5

Thank you all so much, now have a much better understanding of the battery workings.

Found that engine does start fine with only the main battery on. So I was worrying for nothing.

Will in time take the advise to change the system, I can see that it would be so easy to forget to switch over. Like lots of second hand boats, I have many other jobs that for the moment are a little more important. Also one must have time to sail.

Cheers Fran.

Fran is offline   Reply With Quote
Old 08-08-2009, 12:01 PM   #17
Join Date: Jun 2008
Posts: 15

Hi Fran, Batteries can be the biggest of headaches for the uneducated best get some time reading books or there are some good articles on the net,

Batteries usually end up sulfating because the are under charged and over discharged, this is the normal issue on many a sailing boat, With solar panels its not so bad as a slow charge over a long period wil not sulphate up as much but you should have a light that discharges the battery every few days to assist the battery cycling.

I have been experimenting with battery optomizer an friend of mine has been playing with for a few years.

Usually the batteries end up with a SG below 1200 and they are usually thrown out. I have a 84HP Perkins and we have rejunivated 2 200AH batteries in the last 4 months with this device and the batteries are up over 1300. This device will eventually be a must on boats that don't get used as much as they should. There are such devices on the market and should be considered if you have a decent battery bank.

Hope you have a great time on your boat


Rossmonty is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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
Battery Chargers canuckiwis Power & Electronics 6 07-04-2010 05:29 PM
Battery Cables - Making Your Own Lighthouse Repairs & Maintenance 2 03-03-2009 04:58 AM
Battery Charging Voltage TheGhost Power & Electronics 10 02-22-2009 11:26 AM
Battery Equalizer/balancer redbopeep Power & Electronics 2 08-27-2008 12:55 AM

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

RV & Travel Trailer Communities

Our RV & Travel Trailer sites encompasses virtually all types of Recreational Vehicles, from brand-specific to general RV communities.

» More about our RV 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

All times are GMT. The time now is 05:20 AM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.0