Cruisers Forum
 


Join CruisersForum Today

Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 12-09-2018, 14:35   #1
Registered User
 
hd002e's Avatar

Join Date: Dec 2011
Location: New Haven, Connecticut, USA
Boat: Beneteau First 305
Posts: 114
I messed up, batteries dry

When I purchased these sportsman 90A deep cycle batteries, I failed to check if they needed any servicing and figured that they were sealed. I use 2 x 90A on my boat for the house and have a 400W solar system hookedup to them.

Fast forward 2 years in the Mediterranean sun and absolutely no maintenance later, two days ago I realized how badly I messed up. My solar charge controller turned off and I decidedto take the batteries out to check them. They are pretty light! All the liquid inside is gone!

Before I take it to a battery shop, wanted to get opinions here. Are they doorstops or salvageable? What should be my decision criteria?
__________________

hd002e is offline   Reply With Quote
Old 12-09-2018, 14:52   #2
֍֎֍֎֍֎֍֎֍֎

Cruisers Forum Supporter

Join Date: Apr 2006
Posts: 14,583
Re: I messed up, batteries dry

Usually worth $5 each as a "core charge" or return credit where you buy the new ones.
__________________

hellosailor is offline   Reply With Quote
Old 12-09-2018, 14:58   #3
Registered User
 
MikeFergie's Avatar

Join Date: Mar 2015
Location: Mozambique
Boat: Leopard 40 (2009) & Crownline 250CR
Posts: 219
Re: I messed up, batteries dry

Fill them up with sulphuric acid charge them and then do a load test ! Miracles sometimes exist
MikeFergie is offline   Reply With Quote
Old 12-09-2018, 15:08   #4
Registered User

Join Date: Jan 2017
Posts: 7,863
Re: I messed up, batteries dry

A miracle would only delay the inevitable, replace.
john61ct is online now   Reply With Quote
Old 12-09-2018, 15:11   #5
Senior Cruiser
 
Sailmonkey's Avatar

Cruisers Forum Supporter

Join Date: Sep 2009
Location: Houston
Boat: '76 Allied Seawind II, 32'
Posts: 6,533
Re: I messed up, batteries dry

Quote:
Originally Posted by MikeFergie View Post
Fill them up with sulphuric acid charge them and then do a load test ! Miracles sometimes exist


The acid is still in the batteries. And adding more won’t help. Batteries are toast.
Sailmonkey is online now   Reply With Quote
Old 12-09-2018, 15:15   #6
Writing Full-Time Since 2014
 
thinwater's Avatar

Join Date: Nov 2008
Location: Deale, MD
Boat: PDQ Altair, 32/34
Posts: 5,471
Re: I messed up, batteries dry

I wouldn't have pondered that for 1 minute. Replace.


A little low is one thing. Didn't check for two years, bone dry, and you're cruising? Replace at first marina.


And put a watering kit on the next set.
__________________
Gear Testing--Engineering--Sailing
http://sail-delmarva.blogspot.com/
thinwater is offline   Reply With Quote
Old 13-09-2018, 09:21   #7
Registered User
 
OS2Dude's Avatar

Join Date: Nov 2014
Location: Atlanta, GA
Boat: Catalina 30
Posts: 189
Images: 5
Re: I messed up, batteries dry

Caveat: We are on a lake, not cruising the blue.

When we bought our current boat the two batteries were VERY low on water. (Didn't turn them upside down to see, but could not detect water in most cells thru the ports.) They still could start the engine (Not sure how), so we filled them up with distilled water and let them charge for a while. Used them for another year before replacing them with sealed AGM batteries.
OS2Dude is offline   Reply With Quote
Old 13-09-2018, 09:30   #8
Registered User

Join Date: Apr 2005
Location: Southern Calif.
Posts: 457
Re: I messed up, batteries dry

I've added water or battery acid in the past and while you may be able to get them to accept a charge they won't hold it long and complete failure is eminent.
Calif.Ted is offline   Reply With Quote
Old 13-09-2018, 09:52   #9
Registered User
 
Scout 30's Avatar

Join Date: Oct 2014
Location: Florida
Boat: Scout 30
Posts: 2,798
Re: I messed up, batteries dry

This thread should really be about what's the best thing to replace them with.
Scout 30 is online now   Reply With Quote
Old 13-09-2018, 10:43   #10
Registered User

Join Date: Jul 2018
Location: South Portland, Maine
Boat: Brewer 12.8
Posts: 7
Re: I messed up, batteries dry

Replace them with firefly batteries
There costly but worth it
BSMS is online now   Reply With Quote
Old 13-09-2018, 10:56   #11
Registered User

Join Date: Aug 2017
Location: Wisconsin, USA
Posts: 132
Re: I messed up, batteries dry

Just replace them, once dry, they're doomed to fail and most likely when you need them the most.
P3sailor is online now   Reply With Quote
Old 13-09-2018, 11:14   #12
Registered User

Join Date: Feb 2009
Posts: 1,981
Re: I messed up, batteries dry

Dump some water in them and charge them you have nothing to lose
motion30 is offline   Reply With Quote
Old 13-09-2018, 11:16   #13
Registered User
 
S/V Illusion's Avatar

Join Date: Oct 2007
Location: Lakewood Ranch, FLORIDA
Boat: Alden 50, Sarasota, Florida
Posts: 1,842
Re: I messed up, batteries dry

Quote:
Originally Posted by hd002e View Post
When I purchased these sportsman 90A deep cycle batteries, I failed to check if they needed any servicing and figured that they were sealed. I use 2 x 90A on my boat for the house and have a 400W solar system hookedup to them.

Fast forward 2 years in the Mediterranean sun and absolutely no maintenance later, two days ago I realized how badly I messed up. My solar charge controller turned off and I decidedto take the batteries out to check them. They are pretty light! All the liquid inside is gone!

Before I take it to a battery shop, wanted to get opinions here. Are they doorstops or salvageable? What should be my decision criteria?
At best, their capacity would be reduced to the point of unreliability. A load test will show how badly. People guessing here won't...
S/V Illusion is online now   Reply With Quote
Old 13-09-2018, 11:27   #14
Zil
Registered User

Join Date: Mar 2013
Location: South Jersey
Posts: 348
Re: I messed up, batteries dry

Don't mess with them. Adding acid is way wrong! Adding water and trying to charge could cause a very bad reaction. An eye or two is something to lose.
I'm sure you can find some batteries with more amp hour capacity and be very happy.
If you want maintenance-free chose AGM, or more money, Gel.
Zil is offline   Reply With Quote
Old 13-09-2018, 11:58   #15
Registered User
 
Cadence's Avatar

Join Date: Dec 2008
Location: SC
Boat: None,build the one shown of glass, had many from 6' to 48'.
Posts: 7,504
Re: I messed up, batteries dry

I believe you should hunt down the cause prior to spending new money after bad.
__________________

Cadence is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not 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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
400: Reef line routing 400S2 (mine's messed up) Whomda Lagoon Catamarans 0 15-08-2016 16:24
Messed up painting my cockpit carlspackler Construction, Maintenance & Refit 25 18-10-2013 11:20
Messed up, need slip info for Great Loopers/Rivers Wavewacker Marinas 4 02-01-2012 12:51
A Formosa in 'Paradise' Is Being Messed with Strait Shooter Liveaboard's Forum 29 13-12-2011 16:46
Messed-Up Rode SVMorningStar Anchoring & Mooring 12 22-08-2010 18:33



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 09:01.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.