Go Back   iRV2 Forums > MOTORHOME FORUMS > MH-General Discussions & Problems
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 09-20-2007, 09:22 AM   #1
Senior Member
 
hamguy's Avatar
 
Workhorse Chassis Owner
Join Date: Nov 2003
Location: Mesa, AZ USA
Posts: 1,806
I have 2-6VDC house batteries and one 12VDC engine battery. The 2-6V seem to suck up the water. I have to add an ounce or so to each cell every few weeks (4 to 5). The engine battery has never needed water.

The alternator puts out about 14.6 to 14.7 max. The 3-stage, 60A Smart charger puts out as it is supposed to.

Why would these batts need water (Always Distilled) so often?

Dean
__________________

__________________
Wretched excess is just barely enough.

2002 Itasca Suncruiser - WH Chassis - 35U - 2006 Jeep Liberty
hamguy is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 09-20-2007, 09:22 AM   #2
Senior Member
 
hamguy's Avatar
 
Workhorse Chassis Owner
Join Date: Nov 2003
Location: Mesa, AZ USA
Posts: 1,806
I have 2-6VDC house batteries and one 12VDC engine battery. The 2-6V seem to suck up the water. I have to add an ounce or so to each cell every few weeks (4 to 5). The engine battery has never needed water.

The alternator puts out about 14.6 to 14.7 max. The 3-stage, 60A Smart charger puts out as it is supposed to.

Why would these batts need water (Always Distilled) so often?

Dean
__________________

__________________
Wretched excess is just barely enough.

2002 Itasca Suncruiser - WH Chassis - 35U - 2006 Jeep Liberty
hamguy is offline   Reply With Quote
Old 09-20-2007, 09:49 AM   #3
Senior Member
 
RedT's Avatar
 
Freightliner Owners Club
Join Date: Sep 2000
Posts: 353
Had the same problem with two 12VDC coach batteries (National Interstate) Asked the Interstate rep at a rally and got the "Duh" response. Batteries got to the point where they wouldn't hold a charge, and I replaced them. (With Exides)
__________________
RedT, US Air Force Retired
2004 Itasca Meridian VMSpc, Pressure Pro TPMS
2003 Jeep Liberty M&G Brakes System
RedT is offline   Reply With Quote
Old 09-20-2007, 09:54 AM   #4
Senior Member
 
Workhorse Chassis Owner
Join Date: May 2006
Location: Belen, NM
Posts: 338
hamguy, same happened to me. Rig was in shop for other repair and house batteries were dry. Was told they would have to be replaced, couldn't be refilled. Dumb me I went for it but kept old (2 yr) batteries. Called coach mfg and asked about it. Told I hadn't been told truth. Since find Auto Zone sells battery acid, so will keep for future.
The why they go down is a mystery to me too. Do know that house elec draw is thru batteries even when parked and pluged into outside current. Just guessing that extreme heat in Summer where we both live could add to water loss. Will check back on this to see what smarter people offer. Will add that as long as there is ample plates left in batt it should recharge w/ fresh acid.
__________________
Rexhall T-Rex Aerbus 36' May/2004 build

8.1 Vortec 5 spd Allison
eandy is offline   Reply With Quote
Old 09-21-2007, 01:17 AM   #5
Community Moderator
 
RV Wizard's Avatar


 
Country Coach Owners Club
Appalachian Campers
Gulf Streamers Club
Join Date: Mar 2000
Location: Chattanooga, Tn.
Posts: 12,062
Most likely you have a weak or dead cell in at least one of the batteries. THe charger does not know this and only sees that the bank needs charging and so it ends up boiling the water out of the other cells trying to get the voltage up to full charge. The use of a hydrometer will reveal this. If you install new batteries with coog cells you should not have this problem if the charger is working properly. Here is some links for more battery info:
www.ccis.com/home/mnemeth/12volt/12volt.htm http://www.dcbattery.com/faq.html#1
http://www.usbattery.com/care.htm
http://www.windsun.com/Batteries/Bat...ery%20Charging
http://www.lifelinebatteries.com/rvgraphs.php
__________________
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7
RV Wizard is offline   Reply With Quote
Old 09-21-2007, 03:19 AM   #6
Member
 
Join Date: Aug 2007
Location: New Hampshire
Posts: 81
Batteries with fill caps will loose water due to the natural heating of the battery acid when charging or discharging. What is lost from the battery is the H2O, just the water. The sulfur in the compound that make sulfuric acid when mixed with the water temds to stay in the battery. The ermaintenance free batteries as used in cars today will not lose liquid because the top of the sealed battery is formed like grandpa's still. When vapor collects in the still it condenses and drops back into the battery. So batteries with fill caps need to be checked and will need to be topped off. Adding acid is not recommended as the proper amount of acid is already in the battery and in this case more can be bad.

Brad
1990 Foretravel Diesel Pusher
DW Lucy
Kat Earl
Car Trailer with Whitey Ford the Explorer on board
ASE Master Tech
Certified Vocational Instructor
__________________
Brad Sears
nhgeezer is offline   Reply With Quote
Old 09-21-2007, 04:57 AM   #7
Senior Member
 
hamguy's Avatar
 
Workhorse Chassis Owner
Join Date: Nov 2003
Location: Mesa, AZ USA
Posts: 1,806
eandy-

I said they were losing water not acid. A battery should never lose acid.
__________________
Wretched excess is just barely enough.

2002 Itasca Suncruiser - WH Chassis - 35U - 2006 Jeep Liberty
hamguy is offline   Reply With Quote
Old 09-21-2007, 05:08 AM   #8
adj
Senior Member
 
adj's Avatar
 
Monaco Owners Club
Workhorse Chassis Owner
Join Date: Sep 2005
Location: middleburg,fl
Posts: 572
I had this problem in my 97 suncruiser with the original batteries which was 2 12V parallel connected setup. I swapped them out with 2 6V golf cart batteries hooked in series. Still had to continuously top off the batteries.
__________________
Dale & Betty

04 Lapalma 33'
adj is offline   Reply With Quote
Old 09-21-2007, 05:39 AM   #9
Junior Member
 
Join Date: Aug 2007
Location: New Iberia, LA
Posts: 28
Maybe I'm missing something, but why does Class A's use the 2 - 6V batteries that need to be maintained (meaning need to check water) when there is the maintenance free batteries that should do the same thing. Our TT we use to have had the 12V maintenance free battery as the house battery???

Ted
2007 Bounder 36Z
__________________
rajuncajun is offline   Reply With Quote
Old 09-21-2007, 06:19 AM   #10
Senior Member
 
hamguy's Avatar
 
Workhorse Chassis Owner
Join Date: Nov 2003
Location: Mesa, AZ USA
Posts: 1,806
Hi Ted,

One reason is that I (and most class "A" owners) need lots of power when dry camping. I run a furnace, TV/DVD system, refrigerator, lights and other power hogs. Maint. free batteries do not come in deep discharge (cycle)configuration AFAIK.
__________________
Wretched excess is just barely enough.

2002 Itasca Suncruiser - WH Chassis - 35U - 2006 Jeep Liberty
hamguy is offline   Reply With Quote
Old 09-21-2007, 10:54 AM   #11
Junior Member
 
Join Date: Aug 2007
Location: New Iberia, LA
Posts: 28
Hamguy,

When dry camping you're running of your generator correct? What does that have to do with house batteries??? I know there's a logical answer, I just ain't gettin it!
__________________
rajuncajun is offline   Reply With Quote
Old 09-21-2007, 11:19 AM   #12
Member
 
Join Date: Jan 2007
Location: W. Washington
Posts: 44
The two 6-volt batteries provide for a deeper cycle than the 12-volt batteries do. Several manufactures install the 6-volt batteries, either 2 or 4 depending on battery storage space.

I have ran both variations, sticking with the 6-volt set-up. They still get a chunk of change for the 6-volt batteries, so savings is not an issue.

We dry camp as well, drawing off our batteries for the furnace and lighting. Dry camping does not mean that you run the generator 24 hours a day by any means. Doesn't make for a good neighbor, running a generator all night long. We charge during the day, batteries at night. With winter approaching, beginning to look forward to hitting the snow-parks here in Washington. Snowmobile season is soon upon us and there is nothing worse than dead batteries in the middle of the night with an outside temperature in single digits (and that probably isn't cold to some of you).

I experienced the dead cell last winter, replaced both of my 6-volters. Haven't had a problem with either running low of water since replacement.
__________________
Dwain is offline   Reply With Quote
Old 09-21-2007, 11:40 AM   #13
Member
 
Join Date: Aug 2007
Location: New Hampshire
Posts: 81
You can get more amperage out of a 6 volt battery that most 12 volts. Then running them in series to boost the voltage to 12 volts, and bam, power. The whole thing is amps and capacity of the battery. In the old Foretravel I had pleanty of room in the battery box and installed a heavy duty truck battery for the house power. We can live about 30 hours running both the front furnace and rear furnace, lights, inverter, and 19 inch 12 volt TV before we need to fire up the generator and that is here in New England cold.
Brad & Lucy aka the Geezer and the Hedgehog
1990 Foretravel Detroit Deisel pusher
Kat: Earl
Laptop CoPilot 9
Car trailer with Whitey Ford the Explorer
__________________
Brad Sears
nhgeezer is offline   Reply With Quote
Old 09-21-2007, 12:32 PM   #14
Senior Member
 
hamguy's Avatar
 
Workhorse Chassis Owner
Join Date: Nov 2003
Location: Mesa, AZ USA
Posts: 1,806
Dry camping is dry camping. No generator. I can but try not to. Am I getting through to you yet or are you just being contrary? Besides my camping habits have nothing to do with my original question.

__________________

__________________
Wretched excess is just barely enough.

2002 Itasca Suncruiser - WH Chassis - 35U - 2006 Jeep Liberty
hamguy is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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
Checking battery water Chuck Linn Workhorse and Chevrolet Chassis Motorhome Forum 26 09-29-2008 03:18 AM
low water in battery cell YosemiteBobR MH-General Discussions & Problems 12 03-07-2008 03:42 PM
Battery water consumption RVersOnline Alpine Coach Owner's Forum 6 02-01-2007 11:40 AM
Pro-fill battery water system Jim&MaryJo Alpine Coach Owner's Forum 1 08-18-2006 02:38 PM
Battery water level Pete B Winnebago Industries Owner's Forum 3 08-07-2005 09:54 AM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 08:22 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.