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05-27-2015, 04:16 AM
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#1
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New Member
Join Date: May 2015
Location: Pine City
Posts: 3
M.O.C. #17440
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Battery charging
The 12 volt battery on my 2005 Montana doesn't charge up when the electric is plugged in. As a matter of fact it goes dead if I don't unhook it when parked and the electric is plugged in. Any suggestions?
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05-27-2015, 04:25 AM
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#2
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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Sounds like your converter is no longer working correctly.
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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05-27-2015, 04:31 AM
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#3
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Montana Master
Join Date: Aug 2007
Location: Waterford
Posts: 3,693
M.O.C. #7500
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Are you talking about not charging when it's plugged into the tow vehicle? If so, give us a hint on what tow vehicle you have. Some, like certain years of GM trucks have a fuse that must be plugged in to get power to the trailer.
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05-27-2015, 05:02 AM
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#4
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Montana Fan
Join Date: Aug 2012
Location: Fowler
Posts: 414
M.O.C. #12748
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Shorted battery???
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05-27-2015, 05:21 AM
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#5
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New Member
Join Date: May 2015
Location: Pine City
Posts: 3
M.O.C. #17440
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I'm pulling it with a 2015 1 ton Silverado and it's charging fine on that. It's being sucked dry while it's parked in my yard plugged into 110. The battery is brand new installed at the dealer where I bought the rig 1 month ago. I can bring it back to the dealer but we plan on taking off camping in 2 days so I'm hopping that it's something that I can fix.
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05-27-2015, 06:15 AM
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#6
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Montana Master
Join Date: Aug 2004
Location: Livermore
Posts: 5,148
M.O.C. #1920
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I'm sure you checked the fuses for the converter. Unusual that it would charge with TV but not the 110v. Let us know what you find.
__________________
Ron and Terrie Ames - MOC #1920/KF0NTA
2021Montana 3230CK Super Solar Legacy Package
2021 Ram 3500 Laramie Longhorn, BIM Charging
4x4, SRW, LB, Crew Cab, Pullrite 3900 Hitch
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05-27-2015, 08:17 AM
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#7
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New Member
Join Date: May 2015
Location: Pine City
Posts: 3
M.O.C. #17440
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Fuses for the converter? I'm not sure what you're talking about. All the fuses in the converter are good but I didn't know that one of them was for charging the battery. Please tell me more and thank you for the information.
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05-27-2015, 08:36 AM
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#8
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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The convert has two functions. First, when plugged in it converts 110 to 12v for the 12v applications. Second it serves as a battery charger to keep your battery at full charge. Based on what your describing, if all the fuzes are good, you have a failed converter. What is most likely happening is that the converter isn't doing either of it's two jobs. As a result all of your 12v functions such as controls for the refrigerator, propane and other detectors, 12v lights etc are running off the battery which in turn is not being recharged.
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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05-27-2015, 09:42 AM
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#9
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Montana Master
Join Date: Feb 2012
Location: Lake Gaston
Posts: 8,773
M.O.C. #12156
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Quote:
quote:Originally posted by DQDick
The convert has two functions. First, when plugged in it converts 110 to 12v for the 12v applications. Second it serves as a battery charger to keep your battery at full charge. Based on what your describing, if all the fuzes are good, you have a failed converter. What is most likely happening is that the converter isn't doing either of it's two jobs. As a result all of your 12v functions such as controls for the refrigerator, propane and other detectors, 12v lights etc are running off the battery which in turn is not being recharged.
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exactly right. I had the same problem described and it was the converter, although I also thought initially it was the battery.
__________________
Mike and Lorraine
2002 3655 FL, 2005 3650RK
2010 3665RE, 2015 3910FB
F350 crew cab dually 6.7
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05-27-2015, 03:27 PM
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#10
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Montana Master
Join Date: Oct 2012
Location: Chilliwack
Posts: 1,520
M.O.C. #12935
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Like most if not all converters they have reverse polarity fuses, usually 4 of them or at least 2. If somehow these have blown then you will neither charge the battery nor create 12V for the items in the RV that use 12V (most everything).
If you disconnect the battery and plug into 110V and the converter is working you will have lights and all those items that run off 12V will work, if they don't then either the reverse polarity fuses are blown or the converter is Caputt...
Pretty easy to determine if the converter is gone or not. Good luck
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05-27-2015, 05:36 PM
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#11
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Montana Master
Join Date: Feb 2008
Location: Hillsboro
Posts: 593
M.O.C. #8238
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Or, to check one other item that sometimes is overlooked, check the circuit breaker in the 120 volt side of the panel. There IS a circuit breaker for the converter in there, usually a 20 amp one. Sometimes they forget to label it though......!
__________________
Terry and Patsy
Vietnam Veteran, US Navy
2017 3810
2015 GMC Sierra 4X4 3500 SRW
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05-27-2015, 06:05 PM
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#12
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Montana Master
Join Date: Aug 2004
Location: Livermore
Posts: 5,148
M.O.C. #1920
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Joe, there are two 40 amp fuses in the converter. On the new units they are next to the other fuses. In older units, I believe you must pull the converter out, but I'm not sure about that.
__________________
Ron and Terrie Ames - MOC #1920/KF0NTA
2021Montana 3230CK Super Solar Legacy Package
2021 Ram 3500 Laramie Longhorn, BIM Charging
4x4, SRW, LB, Crew Cab, Pullrite 3900 Hitch
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05-28-2015, 06:50 AM
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#13
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Montana Fan
Join Date: Apr 2011
Location: Castle Rock
Posts: 248
M.O.C. #11369
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Check battery disconnect switch. Happened to me when I returned to dealer- disconnect was off(red face)
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05-28-2015, 05:23 PM
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#14
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Montana Master
Join Date: Aug 2004
Location: Livermore
Posts: 5,148
M.O.C. #1920
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In 2005 there wasn't a battery disconnect.
__________________
Ron and Terrie Ames - MOC #1920/KF0NTA
2021Montana 3230CK Super Solar Legacy Package
2021 Ram 3500 Laramie Longhorn, BIM Charging
4x4, SRW, LB, Crew Cab, Pullrite 3900 Hitch
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