Battery choice - Page 2 - SailNet Community
LinkBack Thread Tools
post #11 of 13 Old 03-17-2013
Senior Member
chucklesR's Avatar
Join Date: Sep 2007
Location: Pasadena Md - Magothy side
Posts: 5,979
Thanks: 10
Thanked 31 Times in 31 Posts
Rep Power: 11
Re: Battery choice

The advantage of an AGM is less (no) maintenance, the disadvantage is the specific charging requirements.
For a weekender with a trickle charge or low amp outboard alternator and low amp needs, stay simple and stay sailing.

Lessons learned are opportunities earned.
chucklesR is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
post #12 of 13 Old 03-17-2013
Reward for lost Kraken!
hellosailor's Avatar
Join Date: Apr 2006
Posts: 11,675
Thanks: 6
Thanked 142 Times in 139 Posts
Rep Power: 11
Re: Battery choice

jeff, AGM is no better or cheaper than wet acid UNLESS you can benefit from the diffferences in the design. AGM can sit over the winter witout being charged, without permanent damage. Wet lead takes permanent damage (irreversible sulfation) if it sits for 30 days without recharging, regardess of charge state. AGM will never eat a hole in your clothing. Wet lead will at any opportunity including the carpet in your car. AGM will cost more than wet lead, but it will cost less than the clothing wet lead ate. Wet lead can be topped up if you overcharge it, AGM can't.

And gel batteries require totally different charging, for most users that's not an option.

Whether you chose wet lead or AGM, if the boat sits a a dock most of the time, a good shore charger will pay for itself by keeping the battery properly topped up but not overcharged. If you can't or don't have that option, hook up a small (20-30W) solar panel with controller and that probably will keep the battery topped up just as well. Keeping any battery properly and fully charged may double the life you get from it, and with battery prices skyrocketing that's good economy.
jeffzee likes this.
hellosailor is offline  
Quote Quick Reply Share with Facebook
post #13 of 13 Old 03-17-2013
Senior Member
Join Date: Feb 2010
Location: Narragansett Bay
Posts: 11,772
Thanks: 46
Thanked 261 Times in 245 Posts
Rep Power: 7
Re: Battery choice

If you want to pay the admission price, you can typically pack more amp hours into the same space with AGMs too. Sounds unnecessary for the OP.

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

Jeanneau 54DS

In the harsh marine environment, something is always in need of repair. Margaritas fix everything.
Minnewaska is offline  
Quote Quick Reply Share with Facebook

Quick Reply

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:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


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
Battery Chargers for Multiple Battery Banks btrayfors Electrical Systems 5 11-15-2009 12:57 PM
New Battery charger (unplugged) causes spark on battery post!! Northeaster Gear & Maintenance 15 11-17-2008 09:30 PM
Battery choice ruiz488 Gear & Maintenance 24 05-01-2007 01:31 PM
Sizing a Battery Charger for Windlass Battery btrayfors Gear & Maintenance 9 04-11-2007 01:43 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