(Saved by CO detector overvoltage beeping) -- Gel cell charge voltage settings? - SailNet Community
 
LinkBack Thread Tools
post #1 of 3 Old 02-17-2013 Thread Starter
Glad I found Sailnet
 
Bene505's Avatar
 
Join Date: Jul 2008
Posts: 3,816
Thanks: 14
Thanked 51 Times in 50 Posts
Rep Power: 8
   
(Saved by CO detector overvoltage beeping) -- Gel cell charge voltage settings?

Any opinions on this?

Background: We have a Solar Boost 3024i solar charge controller that I installed on our 170 watts of solar panels.

Yesterday while working on the boat, the CO detector went off. I was a little apprehensive until I read the top of the detector where it said that the slow blinking light means over/under voltage. Quickly looking at the Victron battery monitor, I saw the voltage at 15v and current at 3.86 amps. Not sure if that current was hurting our 330 amp-hour Gel cell bank, but seeing 15 volts was scary.

It turns out that I had the internal microswitch set for monthly equalize. I must have gotten the on-off direction confused. So I took the opportuniy to review the other settings. Here's what I have it set for:
charge voltage 14.4v
charge time: 2 hours
float voltage 13.2
This means that the solar panels will charge the batteries until they hit 14.4 volts for 2 hours. Then it will lower the voltage to 13.2 hours. (Of course, when the sun goes down, the charging stops.)

Any opinions on whether those are the right settings?

I can change the settings up or down in 0.2 volt increments. (If I get a separate device that programs the controller, I can be more precise. But for now, it's 0.2 volt increments.)

Regards,
Brad

.
.
Great minds discuss ideas;
Average minds discuss events;
Small minds discuss people.
.
The best minds discuss sailing (and a little bit of politics). I don't know why. It's a mystery!
.
Bene505 is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 3 Old 02-17-2013
Senior Member
 
Maine Sail's Avatar
 
Join Date: Jan 2003
Location: Maine Coast
Posts: 5,827
Thanks: 19
Thanked 213 Times in 162 Posts
Rep Power: 16
       
Re: (Saved by CO detector overvoltage beeping) -- Gel cell charge voltage settings?

Brad,

Here's some advice for those with solar controllers that have auto equalize...

TURN IT OFF!!!!

As for GEL batteries (most are Sonnenschein or Deka/East Penn) absorption should be about 14.1V. Deka has recently upped this "allowable" voltage on their GEL batteries but when I see properly charged GEL batteries going 8 to 12 years I have to assume that they really like 14.1V and the people who invented the technology, Sonnenschein, knew what they were talking about when they advised 14.1V...

My concern with this new Deka charging voltage allowance is that is to "accommodate" potential buyers with "dumb" chargers and not in the best interest of longevity, which is where GEL's really win..

On your float voltage gels actually float (Sonnenschein & Deka) at higher than one would assume. They like to be floated at 13.6V to 13.8V with 13.8V being preferred...

I would highly recommend the IPN ProRemote especially with GEL or AGM batteries...

______
-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.



Last edited by Maine Sail; 02-17-2013 at 06:57 PM.
Maine Sail is offline  
Quote Quick Reply Share with Facebook
post #3 of 3 Old 02-18-2013 Thread Starter
Glad I found Sailnet
 
Bene505's Avatar
 
Join Date: Jul 2008
Posts: 3,816
Thanks: 14
Thanked 51 Times in 50 Posts
Rep Power: 8
   
Re: (Saved by CO detector overvoltage beeping) -- Gel cell charge voltage settings?

Thanks Maine! Now I have another reason to buy you a beer sometime.

I'll immediately increase the float voltage to 13.8 and decrease the charge voltage to 14.2. And I'm putting the IPN ProRemote is on my list of things to get.

Regards,
Brad

.
.
Great minds discuss ideas;
Average minds discuss events;
Small minds discuss people.
.
The best minds discuss sailing (and a little bit of politics). I don't know why. It's a mystery!
.
Bene505 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
Saved by CO detector -- Gel cell charge voltage settings? Bene505 Gear & Maintenance 0 02-17-2013 02:59 PM
Where do you go for a solar, motion detector? kb3pwc Gear & Maintenance 0 05-20-2012 09:40 PM
Not getting enough charge voltage. simple72 Electrical Systems 9 09-16-2009 01:26 AM
Open cell vs closed cell foam jarcher Gear & Maintenance 2 11-07-2008 07:54 PM
Radar Detector wind_magic Gear & Maintenance 4 07-02-2007 07:15 AM

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