Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Fleetwood Owner's Forum
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 06-30-2022, 04:01 PM   #1
Junior Member
 
Join Date: Jun 2022
Posts: 8
Chassis Batteries gone bad

Our 2005 Bounder Diesel has been in storage since the 1st of the year. In storage the coach is plugged into 20 amp service to help to keep the batteries charged. Well the other day hubby went to get the RV prepped for summer travel. What he found was the panel showing the status of the batteries (chassis and house) would not display anything. In troubleshooting he discovered that both main batteries were dead, had swelled up, and would not take a charge. The mains are the AGM type and less than a year old. So, therefore, they should not have gone bad so soon. Can anyone tell me the best way to troubleshoot this issue? Also if you have experienced this, what did you find out was the problem and what was the best way fix to it?
grammymidge 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 06-30-2022, 04:24 PM   #2
Senior Member
 
Join Date: Aug 2017
Posts: 1,834
It sounds like the batteries may have overcharged while in storage. To further prevent this from happening , install battery disconnects on the house and chassis batteries. When you are storing the coach , make sure the batteries are fully charged , the disconnect them . AGM batteries will be good for over 6 months without needing to be charge. My 14 yr old AGM batteries sit for 8 months without being charged and measure 12.7 v when I connect them.
__________________
1993 Tiffin Allegro Bay 32'
Soppy is offline   Reply With Quote
Old 06-30-2022, 04:39 PM   #3
Junior Member
 
Join Date: Jun 2022
Posts: 8
Soppy thanks for the response. In fact our thoughts did center on the batteries being overcharged, but then I have to think this is the first time in over 16 years that this has happened and also why did this happen to the mains and not to the house batteries which are also of the AGM type and are fine. Just some thoughts that have me wondering.
grammymidge is offline   Reply With Quote
Old 06-30-2022, 04:56 PM   #4
Senior Member
 
Join Date: Oct 2014
Posts: 5,585
What were you using to charge/maintain the chassis and also the house battery banks? And, if a smart charger or smart inverter/charger, was it properly programmed?
__________________
Brett Wolfe
Ex: 2003 Alpine 38FDDS. Ex: 1997 Safari Sahara. Ex: 1993 Foretravel U240
wolfe10 is online now   Reply With Quote
Old 06-30-2022, 11:56 PM   #5
Junior Member
 
Join Date: Jun 2022
Posts: 8
Brett in answer to your question, each winter we store the coach in a large garage on the property and is plugged into shore power at 20 amp service the plug of which is connected to a circuit breaker box not a charger. We have set the power panel for 20 amps. All electronics, appliances, and lights in the coach are shut down. This has been the case each winter for the last 5 years with never a problem of any of the batteries over charging until this year.
grammymidge is offline   Reply With Quote
Old 07-01-2022, 05:47 AM   #6
Senior Member
 
Join Date: Aug 2017
Posts: 1,834
Your batteries may have suffered "thermal runaway" and slowly destroyed themselves. This will happen if your charger is not temperature compensated and the batteries start getting warm while being charged. As the temperature of a battery increases the fully charged voltage drops. If your charger keeps a constant charge voltage on the batteries they will produce heat while being charged and will draw more current causing the battery to get hotter. This will continue till the battery boils dry or melts.
__________________
1993 Tiffin Allegro Bay 32'
Soppy is offline   Reply With Quote
Old 07-01-2022, 02:24 PM   #7
Junior Member
 
Join Date: Jun 2022
Posts: 8
Soppy from the appearance of the batteries your description sounds like this is what happened to them. This is where my and my hubby's inexperience with the way the batteries on the coach charge while on shore power is causing me to ask further questions. Since the only batteries affected by this were the mains and the house batteries were not affected, does this mean the way they are charged while plugged into shore power is different from the way the house batteries are charged? The house batteries have a temperature gauge connected going to the inverter but the mains do not. Is there anywhere I can obtain documentation that explains the process for charging when the coach is hooked up to shore power?
grammymidge is offline   Reply With Quote
Old 07-01-2022, 02:36 PM   #8
Senior Member
 
Join Date: Oct 2014
Posts: 5,585
Quote:
Originally Posted by grammymidge View Post
Brett in answer to your question, each winter we store the coach in a large garage on the property and is plugged into shore power at 20 amp service the plug of which is connected to a circuit breaker box not a charger. We have set the power panel for 20 amps. All electronics, appliances, and lights in the coach are shut down. This has been the case each winter for the last 5 years with never a problem of any of the batteries over charging until this year.



Sorry, not sure I understand. Exactly what "device" uses the 120 VAC and converts it to 12 VDC.


And, does it charge both HOUSE and CHASSIS batteries? Only your voltmeter knows for sure.
__________________
Brett Wolfe
Ex: 2003 Alpine 38FDDS. Ex: 1997 Safari Sahara. Ex: 1993 Foretravel U240
wolfe10 is online now   Reply With Quote
Old 07-01-2022, 03:04 PM   #9
Registered User
 
Join Date: Jan 2021
Posts: 2,184
When you installed AGM’s less than a year ago, did they replace FLA’s?

For what length of time have you owned this coach? Previous posts suggest somewhere between 5-16 years and that you are unfamiliar with the battery charging system.
Kid Gloves is offline   Reply With Quote
Old 07-01-2022, 03:13 PM   #10
Senior Member
 
Join Date: Jul 2014
Posts: 30,721
It may be that the chassis batteries are no longer being charged while on shore power.

Replace of charge them and then plug it in to shore power.

If the bi-directional charging is working, the chassis batteries volts should move up to 13 volts or more.

The failure of the solenoid that handles isolating and combining the batteries is much more common then thermal runaways.
twinboat is online now   Reply With Quote
Old 07-01-2022, 04:25 PM   #11
Junior Member
 
Join Date: Jun 2022
Posts: 8
Quote:
Originally Posted by Kid Gloves View Post
When you installed AGM’s less than a year ago, did they replace FLA’s?

For what length of time have you owned this coach? Previous posts suggest somewhere between 5-16 years and that you are unfamiliar with the battery charging system.
Kid Gloves in answer to your questions
- last year the batteries replaced other AGMs
- we purchased the coach new in Feb 2005; therefore we have had it 17 years.
- and no I am not familiar with the charging system. Hubby has been the one to maintain the coach since we purchased it. He seems to think the inverter over charged the batteries yet from what I see from other posts here the inverter does not charge the mains but then again my understanding is the inverter/charger is the only charging device on the coach so what would be charging the mains while on shore power if it isn't the inverter?

I'm at a loss here and to deal with the battery manufacturer I am hoping to gain as much knowledge as I can to obtain warranty replacement if possible.
grammymidge is offline   Reply With Quote
Old 07-01-2022, 04:29 PM   #12
Member
 
BC Buck's Avatar
 
Join Date: Apr 2018
Posts: 34
Your giving good input and these guys should be able to help.
__________________
St. Louis Missouri
Longing for retirement
BC Buck is offline   Reply With Quote
Old 07-01-2022, 05:10 PM   #13
Senior Member
 
Join Date: Jul 2014
Posts: 30,721
Your inverter/charger handles charging of all of batteries, the house batteries directly and the chassis batteries thru the bridge or isolation solenoid. Same thing different name.

For the chassis battery to overcharge, the house batteries would have also overcharged, actually they should have overcharged first.

Your chassis batteries probably died a slow death due to not being charged and parasitic loads using it up.
twinboat is online now   Reply With Quote
Old 07-04-2022, 12:56 AM   #14
Junior Member
 
Join Date: Jun 2022
Posts: 8
twinboat... this is what the batteries look like today. If they had gone through a slow death of not being charged, why do they look as they do now?
Attached Thumbnails
Click image for larger version

Name:	battery 1 damage.jpg
Views:	8
Size:	193.2 KB
ID:	370071   Click image for larger version

Name:	battery 2 damage.jpg
Views:	7
Size:	199.9 KB
ID:	370072  

grammymidge is offline   Reply With Quote
Reply

Tags
batteries, chassis, chassis batteries



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
Tag axle hub is gone, gone! RLeeDav Newmar Owner's Forum 5 07-18-2019 11:43 PM
Good SAM...Bad Sam Bad Bad Bad! STLNLUV iRV2.com General Discussion 43 12-17-2018 07:49 AM
Bad Alternator or Bad Batteries? ereadingrv Monaco Owner's Forum 44 02-06-2018 04:54 AM
Bad Batteries or bad converter??? Tdye2 RV Systems & Appliances 8 07-24-2016 03:10 PM
Bad, bad, bad - bad vibrations.... Doc Vegas Ford Motorhome Chassis Forum 21 11-30-2014 05:56 PM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 07:18 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2022, vBulletin Solutions, Inc.