Reply
 
Thread Tools Search this Thread Display Modes
 
Old 02-04-2008, 02:37 PM   #1
1 Rivet Member
 
Join Date: Feb 2008
Posts: 8
boiling batteries

Hello,
Iím new to participating in this forum but have tuned in for some time. Iíve had a problem with my 12 volt system since I got into this trailer last summer. No option of boon docking for now as I donít have enough 12 volt for much more than the trailer jack and lights for a short time when off shore power. The symptom shows up as battery problems-an older one cooks off pretty fast while hooked to shore power and Iíve just abandoned it (as I remember, a few weeks ago I swapped a brand new one in there and it immediately started overheating also). I have been able to pretty well inspect the wiring for that battery compartment back to the inverter/charger and donít see evidence for an obvious leak. Iím a little afraid Iíve got a dead short somewhere unless itís related to the inverter/charger malfunctioning. On our last trip, under wet conditions, when connecting the satellite cable I felt a tingling like putting your tongue on a lantern battery when the back of my wet hand contacted some bare metal inside that compartment. I donít know if this is an indication that something down right dangerous is going on or just typical for the conditions. Anybody out there with experience and wisdom to suggest a diagnosis/quick fix or where I should start (everything in the trailer seems to work just fine off the shore power)? I built and wired/plumbed my own house so have some aptitude, just lack direction being new to the alternate universe of travel trailers. Incidentally, Iím writing this from my work computer so am not able to confirm it, but I believe it has a parallax inverter/charger, though I might just have that stuck in my head from seeing it somewhere else.
__________________

__________________
not2tacky is offline   Reply With Quote
Old 02-04-2008, 03:58 PM   #2
More than one rivet loose
 
thecatsandi's Avatar

 
Currently Looking...
Keymar , Maryland
Join Date: Feb 2006
Posts: 3,754
Quote:
Originally Posted by not2tacky
Hello,
Iím new to participating in this forum but have tuned in for some time. Iíve had a problem with my 12 volt system since I got into this trailer last summer. No option of boon docking for now as I donít have enough 12 volt for much more than the trailer jack and lights for a short time when off shore power.

Well thats a bummer.
Quote:
Originally Posted by not2tacky
The symptom shows up as battery problems-an older one cooks off pretty fast while hooked to shore power and Iíve just abandoned it (as I remember, a few weeks ago I swapped a brand new one in there and it immediately started overheating also). I have been able to pretty well inspect the wiring for that battery compartment back to the inverter/charger and donít see evidence for an obvious leak. Iím a little afraid Iíve got a dead short somewhere unless itís related to the inverter/charger malfunctioning.

A short to the frame is hapeneing somwhere. Not enough to trip a breaker. With everything off put an amp meter in line with each circuit. It should read a very low draw.

Quote:
Originally Posted by not2tacky
On our last trip, under wet conditions, when connecting the satellite cable I felt a tingling like putting your tongue on a lantern battery when the back of my wet hand contacted some bare metal inside that compartment. I donít know if this is an indication that something down right dangerous is going on or just typical for the conditions.

This is an indication of something dangerous. Some others have had this problem and it tured out to be the 110 line ot the AC unit was pierced.
__________________

__________________
Michelle TAC MT-0
Sarah, Snowball

Looking for a 1962 Flying Cloud

thecatsandi is offline   Reply With Quote
Old 02-04-2008, 05:56 PM   #3
1 Rivet Member
 
Join Date: Feb 2008
Posts: 8
Thanks Michelle

Makes sense and sounds like a good place to start. Wonder what
I'll do if I find it?
__________________
not2tacky is offline   Reply With Quote
Old 02-04-2008, 06:31 PM   #4
4 Rivet Member
 
1972 25' Tradewind
Madison , Wisconsin
Join Date: Apr 2005
Posts: 396
I have to endorse that advice. Start with your amp/voltmeter and check your AC input first. If it doesn't show up there (though I think it will show)check your output on the charger.

You may want to pull the panel off of your breaker box & be sure your AC is wired in correctly. My hunting partner is an electrical contractor and also knows the RV wiring rules. He has seen some "interesting" wiring in RV's (he is also an arson investigator). The PO may have wired something out of phase which would not do the charger any good.
__________________
Smokin Camel is offline   Reply With Quote
Old 02-04-2008, 06:54 PM   #5
More than one rivet loose
 
thecatsandi's Avatar

 
Currently Looking...
Keymar , Maryland
Join Date: Feb 2006
Posts: 3,754
I thought of something else.
Try this.
Get a 30 to 15 adapter (RV to House). Plug that into a known good GFI outlet.
If it trips then you definately have a 110 VAC leak.
__________________
Michelle TAC MT-0
Sarah, Snowball

Looking for a 1962 Flying Cloud

thecatsandi is offline   Reply With Quote
Old 02-08-2008, 06:58 PM   #6
1 Rivet Member
 
Join Date: Feb 2008
Posts: 8
tried that

Plugged into a good GFI receptical, powered up the a/c & fridge, no problem- didn't trip the GFI breaker. I had the (+) post disconected from the old battery and checked voltage on on it before removing the ground, it showed 2-4 volts - not much of a reading but the needle moved. Then completely removed it,checked the voltage and it looked like about 12V coming from the inverter/charger with no battery. Then swapped in a deep cycle out of one of my boats that had a good charge and it read 12 V after connecting. It's been on about 45 min and don't see any sign of overheating yet. I'll give it a couple of hours and if that holds, will let it go overnight, I sure thought I swapped that other battery in there before but may have been delusional. before I go any further, I don't have any AC load on it at all right now and can't hear the inverter fan running. The batteries may not be demanding any charge because they're not down enough-don't know because my little voltmeter cratered on me for unknown reasons (will pick a better one up in AM). Should I put a little load on it (fantastic fans?) so it will kick on and I can see if it's overcharging? Could it be the old battery just had a bad plate or something and all I need is to go get a good new battery? Of course this doesn't say anything about the little shock while hooking up wet.
__________________
not2tacky is offline   Reply With Quote
Old 02-08-2008, 07:18 PM   #7
4 Rivet Member
 
1971 29' Ambassador
Leonardtown , Maryland
Join Date: Oct 2004
Posts: 262
Images: 3
Battery

Your inverter should be giving an output 13 to 14 volts. I believe the 12 volts you are reading is the actual battery voltage. If it were mine I would suspect the inverter having a problem. The inverter has an over charge/battery protection circuits, if this circuit is broke the battery will over heat and cause the battery to short out. Check the inverter output with out anything connected to the output.

dale
__________________
_________________

Rebee - WBCCI #1325
2002 Classic Ltd 30'
2007 Dodge 2500, 6.7 Cummins
Rebee is offline   Reply With Quote
Old 02-09-2008, 01:06 AM   #8
Rivet Master
 
ROBERTSUNRUS's Avatar

 
2005 25' Safari
Salem , Oregon
Join Date: Mar 2006
Posts: 7,266
Images: 18
Blog Entries: 51
Hi, if I understand what you are saying, then the first thing you need to do is buy two brand new batteries and install them. If you are connecting a good battery to a marginal or bad battery, you will have bad results. Sounds, to me, like you have one bad battery and one fair one; And taking one battery out of your boat and connecting it to the fair one just don't work. You shouldn't get a tingle from the 12 volt system. This is usually caused by a poor connection in the 110 volt system and most likely a bad ground or no ground connection. A little three light polarity tester plugged into an interior receptical inside your trailer is a good test.
__________________
Bob

2005 Safari 25-B
"Le Petit Chateau Argent"
[ Small Silver Castle ]
2000 Navigator / 2014 F-150 Eco-Boost / Equal-i-zer / P-3
YAMAHA 2400 / AIR #12144
ROBERTSUNRUS is offline   Reply With Quote
Old 02-09-2008, 01:24 AM   #9
uwe
418
 
uwe's Avatar
 
2007 25' Safari FB SE
1958 22' Flying Cloud
1974 29' Ambassador
Yucca Valley , California
Join Date: Jun 2002
Location: 1963 26' Overlander
Posts: 4,767
Images: 41
Send a message via Skype™ to uwe
If you are not sure what is going on, and if your skills don't produce reasonable results in a short amount of time, then you need professional help. A large percentage of RV fires are of electrical origin.
Please get professional help, so we can enjoy your posts for a long time to come...
__________________
Uwe
www.area63productions.com
uwe is offline   Reply With Quote
Old 02-09-2008, 06:32 AM   #10
3 Rivet Member
 
72 tradewind's Avatar
 
1972 25' Tradewind
Willis , Texas
Join Date: Jul 2004
Posts: 104
Images: 8
boiling batterys

What I have found with boiling batterys is that the batterys have failed. First battery in my Airstream started boiling after about a year of light use. Replaced it with the warranty battery, (same type battery) no more boiling. Bought a boat with a battery in it. Seemed like it needed a charge. We were camping in the Airstream so I swapped batterys, boat battery in the Airstream, AS battery in the boat. Later in the day I went to check on the boat battery and it was boiling away so I promptly recycled it.
__________________
72 tradewind is offline   Reply With Quote
Old 02-09-2008, 09:05 AM   #11
3 Rivet Member
 
1971 25' Caravanner
scappoose , Oregon
Join Date: Oct 2007
Posts: 197
The feeling of a "tingling" in your hand, when you touched the metal case idicates that there is the potential of dangerous voltage present in the metal of the trailer. Somewhere in the AS there is a fault, chafed wire inside the shell perhaps, or internal fault in the chargers wiring. Because of the flexing of the trailer, sometimes internal wiring problems can be intermittent in nature. Whatever, get this problem tracked down ASAP, someones life could be in danger.
__________________
rangebowdrie is offline   Reply With Quote
Old 02-17-2008, 06:11 PM   #12
1 Rivet Member
 
Join Date: Feb 2008
Posts: 8
OK, I bought 2 new batteries. installed them and no problems after considerable time connected to shore power. So, inverter/charger must not be over charging, right? Have not checked to see what kind of charge is going to them as the inverter hasn't kicked on (batteries fully charge at purchase I guess). I'll go out and turn the fans on for a while tomorrow to discharge the batteries some and see what I get.

Plugged into a good GFI source for shore power and it didn't trip with the AC and fridge running. Also looked for leaks with my little voltmeter and saw none. Maybe it's a ghost leak that comes and goes after some flexing of the trailer on the road. Maybe it was my imagination to begin with. I'll check it on my next trip in March.

Just thought I'd update those who have been nice enough to reply. Thanks to all.
__________________

__________________
not2tacky 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
Boiling Battery Killo1 Batteries, Univolts, Converters & Inverters 9 07-10-2006 12:00 AM
Batteries???? FOB Batteries, Univolts, Converters & Inverters 6 07-09-2006 11:33 AM
batteries dsmith Electrical - Systems, Generators, Batteries & Solar 7 03-15-2006 08:36 AM
Univolt boiling battery! On for 12 hours!!! Bryanhu Electrical - Systems, Generators, Batteries & Solar 8 04-10-2004 06:03 AM
Batteries..All about batteries FrankR Batteries, Univolts, Converters & Inverters 0 07-17-2002 10:05 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 11:41 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.