Battery charging with an outboard - 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 > Electrical Systems
 Not a Member? 
  #1  
Old 12-05-2008
pedcab's Avatar
Senior Member
 
Join Date: Dec 2008
Posts: 192
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
pedcab is on a distinguished road
Battery charging with an outboard

Hi everyone.

Thought of sharing the schematics of a voltage regulator/charge controller I have fitted to my trimaran.

The point is to regulate the voltage output from my Tohatsu OB going to the battery as well as to dissipate any excess current and/or voltage spikes that might try to overcharge the battery after it is fully charged.

The dissipation is done by means of a 12V/55W lamp that is fed throught a transistor which "opens" when the voltage reaches about 14V DC.

It has been working very well for me for quite a while now and so I thought of sharing it. Hope it is of any use to someone.

Here is the schematic




Before use there´s a calibration procedure THAT MUST BE ACOMPLISHED and which goes as follows:

1- Remove all the loads (dissipation lamps and/or lead acid battery)
2- Apply 14Vdc at the input
3- Measure voltage between TP1 and ground
4- Adjust R3 untill there´s a sudden voltage rise

And that´s it. You can now connect the dissipation loads and connect the circuit.

Notes:
-It is supposed that the output of your generator is allready rectified to DC. Most outboard manufacturers provide simple plug-and-play rectifier kits;
-Q2 must be installed in a dissipator with adequate dimensions;
-The lamp wil light and, consequently,WILL HEAT UP. Please make sure it is well away from anything sensitive to heat and in a suitably ventilated place. In my installation the lamp is on the outside of the assembly box;
-This circuit is designed for a generator with a maximum of 55W output (small outboard motors, solar panels etc). For higher power operation simply add as many Q2/L1 pairs as necessary until the desired capacity is achieved.
__________________
Pedro

Portugal


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Quick reply to this message Share with Facebook
  #2  
Old 12-05-2008
WouldaShoulda's Avatar
AEOLUS II
 
Join Date: Oct 2008
Location: From The Land of Pleasant Living
Posts: 2,824
Thanks: 3
Thanked 12 Times in 12 Posts
Rep Power: 7
WouldaShoulda is on a distinguished road
Hey, what is this??

I just want the damn thing to go when I turn it on!!
Reply With Quote Quick reply to this message Share with Facebook
  #3  
Old 12-05-2008
pedcab's Avatar
Senior Member
 
Join Date: Dec 2008
Posts: 192
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
pedcab is on a distinguished road
Quote:
Originally Posted by WouldaShoulda View Post
Hey, what is this??

I just want the damn thing to go when I turn it on!!
And what exactly do you mean...
__________________
Pedro

Portugal


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Quick reply to this message Share with Facebook
  #4  
Old 12-05-2008
sailingdog's Avatar
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 11 Times in 11 Posts
Rep Power: 13
sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
Just curious, what trimaran do you have???
__________________
Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
Reply With Quote Quick reply to this message Share with Facebook
  #5  
Old 12-05-2008
WouldaShoulda's Avatar
AEOLUS II
 
Join Date: Oct 2008
Location: From The Land of Pleasant Living
Posts: 2,824
Thanks: 3
Thanked 12 Times in 12 Posts
Rep Power: 7
WouldaShoulda is on a distinguished road
Oh jeez...

Trimaran love.

Get a room!!
Reply With Quote Quick reply to this message Share with Facebook
  #6  
Old 12-05-2008
pedcab's Avatar
Senior Member
 
Join Date: Dec 2008
Posts: 192
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
pedcab is on a distinguished road
Quote:
Originally Posted by sailingdog View Post
Just curious, what trimaran do you have???
It´s a Piver Nugget 24 called Fulô





__________________
Pedro

Portugal


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Quick reply to this message Share with Facebook
  #7  
Old 12-05-2008
sailingdog's Avatar
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 11 Times in 11 Posts
Rep Power: 13
sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
BITE ME leadmine boy...
Quote:
Originally Posted by WouldaShoulda View Post
Oh jeez...

Trimaran love.

Get a room!!
__________________
Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
Reply With Quote Quick reply to this message Share with Facebook
  #8  
Old 12-05-2008
pedcab's Avatar
Senior Member
 
Join Date: Dec 2008
Posts: 192
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
pedcab is on a distinguished road
In every forum, community, etc... there a black sheep

Who the hell is this "WouldaShoulda" bloke?
__________________
Pedro

Portugal


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Quick reply to this message Share with Facebook
  #9  
Old 12-05-2008
sailingdog's Avatar
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 11 Times in 11 Posts
Rep Power: 13
sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
A guy with a slow boat...
Quote:
Originally Posted by pedcab View Post
In every forum, community, etc... there a black sheep

Who the hell is this "WouldaShoulda" bloke?
__________________
Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
Reply With Quote Quick reply to this message Share with Facebook
  #10  
Old 12-05-2008
Cruisingdad's Avatar
Best Looking MALE Mod
 
Join Date: Jul 2006
Location: Washington State
Posts: 9,904
Thanks: 3
Thanked 110 Times in 53 Posts
Rep Power: 10
Cruisingdad is a jewel in the rough Cruisingdad is a jewel in the rough Cruisingdad is a jewel in the rough
Quote:
Originally Posted by WouldaShoulda View Post
Oh jeez...

Trimaran love.

Get a room!!
I am certain that Wouldashoulda is only joking with you guys. We must assume it is his attempt at being funny. I am sure that is all it is because he knows my tolerance level for intentionally trying to start arguments (ESPECIALLY OUT OF OFF TOPIC) is zero... especially right now.

We do joke around with SD and other membres. I do it. But I make sure they are people I know first. And they all take it in stride. I do not want to turn the forum outside of Off TOpic into something dry. However, we must all be conscientious of what we say on the internet because you cannot inflect tone. I have already mentioned that I am over worked right now as it is and we are short handed. I cannot imagine anyone not trying to make the extra effort here while we are going through this period (which may be a long period).

Enough said.

- CD
__________________
Sailnet Moderator



1987 Tayana Vancouver 42, Credendo Vides, (Mom and Pops boat, F/T Mobile Live Aboards in Puget Sound)

My Website:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


Follow My Blog at:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


Follow me on Facebook:

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
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
Choosing Batteries Kevin Jeffrey Gear and Maintenance Articles 0 04-07-2003 09:00 PM
Choosing Batteries Kevin Jeffrey Cruising Articles 0 04-07-2003 09:00 PM
Installing a New Battery Bank Sue & Larry Gear and Maintenance Articles 0 09-26-2002 09:00 PM
Charging Batteries Sue & Larry Gear and Maintenance Articles 0 09-25-2002 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 10:01 AM.

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.