Solar charge controller question - Page 3 - SailNet Community
 3Likes
Reply
 
LinkBack Thread Tools
post #21 of 27 Old 09-01-2013 Thread Starter
Senior Member
 
Join Date: Oct 2007
Location: Brazil
Posts: 983
Thanks: 3
Thanked 24 Times in 23 Posts
Rep Power: 8
 
Re: Solar charge controller question

Another detail I should mention: according to the panel literature, each panel should put out a maximum of 3.5a/18v per hour under optimum sun conditions. Should I expect something like 2a/hour during the sunny hours from each panel? It seems that I should be putting more into the battery than I consume if that's the case.

And yet another detail ... I measured 16v coming into the controller from the panels in the late afternoon sun. Can I assume the panels are working fine?

Vindö 50

Last edited by copacabana; 09-01-2013 at 08:47 AM.
copacabana is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #22 of 27 Old 09-08-2013 Thread Starter
Senior Member
 
Join Date: Oct 2007
Location: Brazil
Posts: 983
Thanks: 3
Thanked 24 Times in 23 Posts
Rep Power: 8
 
Re: Solar charge controller question

Another update:

I went to the boat yesterday to install the new controller. Following the advice Mainesail gave me, I checked the amp and volt output of the panels with the old controller before I removed it. it wasn't a very sunny day and the angle was getting low, but the old controller was putting out 1.3 amps and only 12.8 volts. We put in the new controller and saw a jump to 2 amps and 13.1 volts. It looks like the old controller might have been the problem after all. I left the panels charging my 160a house battery and will return in 2 weeks to see the charge state. If all is well, I hope the see the little blinking light that indicates a full battery on float charge.

Vindö 50
copacabana is offline  
Quote Quick Reply Share with Facebook
post #23 of 27 Old 09-09-2013
Senior Member
 
Maine Sail's Avatar
 
Join Date: Jan 2003
Location: Maine Coast
Posts: 5,877
Thanks: 20
Thanked 218 Times in 166 Posts
Rep Power: 16
       
Re: Solar charge controller question

Quote:
Originally Posted by copacabana View Post
Another update:

I went to the boat yesterday to install the new controller. Following the advice Mainesail gave me, I checked the amp and volt output of the panels with the old controller before I removed it. it wasn't a very sunny day and the angle was getting low, but the old controller was putting out 1.3 amps and only 12.8 volts. We put in the new controller and saw a jump to 2 amps and 13.1 volts. It looks like the old controller might have been the problem after all. I left the panels charging my 160a house battery and will return in 2 weeks to see the charge state. If all is well, I hope the see the little blinking light that indicates a full battery on float charge.

Glad you found the issue. There are a LOT of suspect solar controllers out there and the market is akin to Snake Oil sales from the early days of pharmaceuticals........
copacabana likes this.

______
-Maine Sail / CS-36T


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




© Images In Posts Property of Compass Marine Inc.


Maine Sail is offline  
Quote Quick Reply Share with Facebook
post #24 of 27 Old 09-09-2013 Thread Starter
Senior Member
 
Join Date: Oct 2007
Location: Brazil
Posts: 983
Thanks: 3
Thanked 24 Times in 23 Posts
Rep Power: 8
 
Re: Solar charge controller question

Thanks Mainesail. I hope I've nailed it. As I mentioned, I'll know for sure when I get back to the boat after two weeks of charging in the sun. If I find the battery on float charge, I'll be happy. Funny that the old controller didn't fail altogether though. I thought they either worked or didn't work.

I'll report back with the final results!

Vindö 50
copacabana is offline  
Quote Quick Reply Share with Facebook
post #25 of 27 Old 09-23-2013 Thread Starter
Senior Member
 
Join Date: Oct 2007
Location: Brazil
Posts: 983
Thanks: 3
Thanked 24 Times in 23 Posts
Rep Power: 8
 
Re: Solar charge controller question

Final results: I found the battery bursting with 12.9v and sitting on float charge. I believe the problem was solved by replacing the controller. Thanks for all the advice.

Vindö 50
copacabana is offline  
Quote Quick Reply Share with Facebook
post #26 of 27 Old 09-23-2013
Reward for lost Kraken!
 
hellosailor's Avatar
 
Join Date: Apr 2006
Posts: 11,486
Thanks: 5
Thanked 132 Times in 129 Posts
Rep Power: 11
   
Re: Solar charge controller question

Copa-
If the battery was bursting at 12.9v, it might have been "cooked" by a bad controller and then burst. Or, it might have been dried out resulting in a burst from "normal" and proper charging. At least in my understanding, what you saw doesn't give you a definite cause and effect, it could have gone either way.
hellosailor is offline  
Quote Quick Reply Share with Facebook
post #27 of 27 Old 09-23-2013 Thread Starter
Senior Member
 
Join Date: Oct 2007
Location: Brazil
Posts: 983
Thanks: 3
Thanked 24 Times in 23 Posts
Rep Power: 8
 
Re: Solar charge controller question

Sorry, I didn't mean literally "bursting", I meant fully charged. The battery seems to be fine. Anyhow, my next step is to add a cheap amp meter to monitor how many amps are flowing into the battery from the panels. For the time being I'm using battery voltage to determine the charge state.

Vindö 50
copacabana is offline  
Quote Quick Reply 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:
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
Do I Need A Solar Charge Controller? Maine Sail Electrical Systems 11 4 Weeks Ago 09:14 AM
Charge Controller for wind and solar cvsheppard Electrical Systems 1 01-04-2011 04:45 AM
need help choosing a charge controller for solar and wind newcruiserP10M Electrical Systems 1 09-23-2010 01:36 PM
Solar charge controller Jotun Gear & Maintenance 10 04-13-2007 02:22 PM
Best Solar Charge Controller? mmccoy Gear & Maintenance 1 07-28-2004 11:46 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