Have I runied my batteries - 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 12-09-2010
Junior Member
 
Join Date: Aug 2008
Location: Hawaii
Posts: 12
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
watom is on a distinguished road
Cool Have I runied my batteries

I am a full time live aboard, went on two week vacation forgot to turn off battery switch did turn off charger. Got home batteries had no voltage on the volt meter turned on charger three days later volt meter reading less than 9 volts. The are 220 amp AGM do not know the actual age but guess 3 years old. Think they are shot?
Reply With Quote Share with Facebook
  #2  
Old 12-09-2010
Irrationally Exuberant
 
Join Date: Jul 2007
Location: Northern Virginia
Posts: 1,299
Thanks: 6
Thanked 6 Times in 6 Posts
Rep Power: 7
arf145 is on a distinguished road
So, you left them charging for 3 days and they still read 9 volts?
__________________
Tom K

2000 Beneteau 331
Northern Chesapeake Bay

Ambition is a poor excuse for not having enough sense to be lazy ~ Steven Wright
Reply With Quote Share with Facebook
  #3  
Old 12-09-2010
bljones's Avatar
Senior Member
 
Join Date: Oct 2008
Location: South Coast Ontario
Posts: 8,125
Thanks: 32
Thanked 68 Times in 61 Posts
Rep Power: 7
bljones has a spectacular aura about bljones has a spectacular aura about
I think you already know the answer.
However... as a failsafe, try a different charger. The problem may be the charger, not the batteries.
Having said that, assuming your demand power draw is give/take 0 (nobody on the boat, so no systems running other than stereo memory and maybe a bilge pump?) I am surprised your batteries are flat.
Reply With Quote Share with Facebook
  #4  
Old 12-09-2010
SVPrairieRose's Avatar
Senior Member
 
Join Date: Oct 2009
Location: Vancouver BC
Posts: 227
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 5
SVPrairieRose is on a distinguished road
What type of charger are you using? Some "smart" chargers only charge if they detect a battery and if you are dead flat they won't see them. And yeah, what loads are on your batteries while you are gone?
Reply With Quote Share with Facebook
  #5  
Old 12-10-2010
Zanshin's Avatar
Senior Member
 
Join Date: Aug 2006
Location: Germany
Posts: 2,158
Thanks: 0
Thanked 14 Times in 14 Posts
Rep Power: 8
Zanshin is on a distinguished road
My Victron charger/inverter shuts off after 10 hours on "float" and needs to be reset in ordre to charge again. Also, how many batteries do you have? Perhaps one or more of them is fried and and pulling down the overall current; can you disconnect all the batteries and measure their voltage separately?
__________________

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

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Share with Facebook
  #6  
Old 12-10-2010
Omatako's Avatar
Senior Member
 
Join Date: Sep 2003
Location: Auckland New Zealand
Posts: 2,369
Thanks: 0
Thanked 25 Times in 22 Posts
Rep Power: 11
Omatako will become famous soon enough
I'm with BLJones, what draw do you have that will kill batteries after two weeks when there's no-one on board? That needs to be fixed first.

Or the batteries were toast anyway?
__________________

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

__________________

"Two possibilities exist: Either we are alone in the Universe or we are not. Both are equally terrifying."

Arthur C. Clarke
Reply With Quote Share with Facebook
  #7  
Old 12-10-2010
sailingdog's Avatar
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,291
Thanks: 0
Thanked 9 Times in 9 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
There is a good reason to have some sort of non-AC, passive battery charging capacity on the boat.
__________________
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 Share with Facebook
  #8  
Old 12-10-2010
mitiempo's Avatar
Senior Member
 
Join Date: Sep 2008
Location: Victoria B.C. Canada
Posts: 6,978
Thanks: 0
Thanked 61 Times in 52 Posts
Rep Power: 6
mitiempo will become famous soon enough
If the AC charger is a reliable 3 stage model, as it should be, there is no reason to turn it off.
__________________
Brian
Living aboard in Victoria Harbour
Reply With Quote Share with Facebook
Reply


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
Li - Ion Batteries Raven38 Electrical Systems 1 05-29-2010 02:50 AM
AGM Batteries Yofy Gear & Maintenance 10 08-16-2007 02:33 PM
Batteries lgsailor19 Gear & Maintenance 2 05-20-2005 12:40 PM
batteries tm3 Gear & Maintenance 15 03-22-2004 08:23 PM


All times are GMT -4. The time now is 03:48 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