Battery charging with an outboard - SailNet Community
Reply
 
LinkBack Thread Tools
post #1 of 25 Old 12-05-2008 Thread Starter
Senior Member
 
pedcab's Avatar
 
Join Date: Dec 2008
Posts: 192
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
 
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.
pedcab is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 25 Old 12-05-2008
AEOLUS II
 
WouldaShoulda's Avatar
 
Join Date: Oct 2008
Location: From The Land of Pleasant Living
Posts: 2,894
Thanks: 3
Thanked 12 Times in 12 Posts
Rep Power: 7
 
Hey, what is this??

I just want the damn thing to go when I turn it on!!
WouldaShoulda is offline  
Quote Quick Reply Share with Facebook
post #3 of 25 Old 12-05-2008 Thread Starter
Senior Member
 
pedcab's Avatar
 
Join Date: Dec 2008
Posts: 192
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
 
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.
pedcab is offline  
Quote Quick Reply Share with Facebook
post #4 of 25 Old 12-05-2008
Telstar 28
 
sailingdog's Avatar
 
Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 14 Times in 12 Posts
Rep Power: 14
         
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.
sailingdog is offline  
Quote Quick Reply Share with Facebook
post #5 of 25 Old 12-05-2008
AEOLUS II
 
WouldaShoulda's Avatar
 
Join Date: Oct 2008
Location: From The Land of Pleasant Living
Posts: 2,894
Thanks: 3
Thanked 12 Times in 12 Posts
Rep Power: 7
 
Oh jeez...

Trimaran love.

Get a room!!
WouldaShoulda is offline  
Quote Quick Reply Share with Facebook
post #6 of 25 Old 12-05-2008 Thread Starter
Senior Member
 
pedcab's Avatar
 
Join Date: Dec 2008
Posts: 192
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
 
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.
pedcab is offline  
Quote Quick Reply Share with Facebook
post #7 of 25 Old 12-05-2008
Telstar 28
 
sailingdog's Avatar
 
Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 14 Times in 12 Posts
Rep Power: 14
         
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.
sailingdog is offline  
Quote Quick Reply Share with Facebook
post #8 of 25 Old 12-05-2008 Thread Starter
Senior Member
 
pedcab's Avatar
 
Join Date: Dec 2008
Posts: 192
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 7
 
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.
pedcab is offline  
Quote Quick Reply Share with Facebook
post #9 of 25 Old 12-05-2008
Telstar 28
 
sailingdog's Avatar
 
Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 14 Times in 12 Posts
Rep Power: 14
         
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.
sailingdog is offline  
Quote Quick Reply Share with Facebook
post #10 of 25 Old 12-05-2008
Best Looking MALE Mod
 
Cruisingdad's Avatar
 
Join Date: Jul 2006
Location: Washington State
Posts: 9,917
Thanks: 3
Thanked 123 Times in 57 Posts
Rep Power: 10
     
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.
Cruisingdad is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

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:
OR

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
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Choosing Batteries Kevin Jeffrey Gear and Maintenance Articles 0 04-07-2003 08:00 PM
Choosing Batteries Kevin Jeffrey Cruising Articles 0 04-07-2003 08:00 PM
Installing a New Battery Bank Sue & Larry Gear and Maintenance Articles 0 09-26-2002 08:00 PM
Charging Batteries Sue & Larry Gear and Maintenance Articles 0 09-25-2002 08:00 PM
Boat Battery Power East Penn Manufr. Gear and Maintenance Articles 0 01-18-1999 07:00 PM

Posting Rules  
You may post new threads
You may 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome