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01-27-2019, 01:57 PM
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#1
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New Member
Join Date: Feb 2015
Location: Federal Way
Posts: 5
M.O.C. #16081
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Converter is going bad
Recently upgraded the batteries from 2 12 volt to 4 6volt batteries for a future project to add 2000 watt inverter. A few days later I’m hearing a whistling sound from the converter and with a volt meter, there’s no dc power going to the batteries for charging. Batteries are connected correctly with dc output at 12.50 volts. So, my question is, 6 volt batteries have a higher amperage, did that possibly cause the problem or was it just a coincidence?
Thanks
Tom
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01-27-2019, 02:00 PM
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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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We had six golf cart batteries in our old rig with no problems. That said some of the older montana's may not have converters compatable with some types of AGM batteries.
__________________
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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01-27-2019, 02:23 PM
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#3
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Site Team
Join Date: Oct 2005
Location: Carmichael - CA
Posts: 7,324
M.O.C. #4831
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As you just changed batteries, I suggest you test the Reverse Polarity fuses in the converter. It could be they have blown. The Montana supplied converter is fine for 6V and 12V batteries.
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Carl (n Susan)
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB
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01-27-2019, 05:00 PM
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#4
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Montana Master
Join Date: Oct 2012
Location: Box Elder
Posts: 4,677
M.O.C. #12947
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Not sure what model or year rig you have or what converter or power center you have, but if by chance your converter is one of the ones described in this trouble shooting guide, I would follow all the procedures before replacing what may be a good converter. Also, I believe these converters are designed for all wet cell batteries, including AGM batteries without any modification and if gel cell batteries are used, a jumper installed in the circuit board is all that is needed for them.
https://www.progressivedyn.com/wp-co...LESHOOTING.pdf
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Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
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04-05-2019, 06:36 PM
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#5
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Montana Fan
Join Date: Oct 2015
Location: Round Rock
Posts: 475
M.O.C. #17905
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Quote:
Originally Posted by carl n susan
As you just changed batteries, I suggest you test the Reverse Polarity fuses in the converter. It could be they have blown. The Montana supplied converter is fine for 6V and 12V batteries.
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just purchased 2-Trojan 6-v T-105 AGM and Dealer techs have 4-5 different opinions on whether my original converter is the proper unit for theses batts. Am I good to go as is or do I need another converter.....just want to make sure.
Thanks for advice.
PS. you just can't get good help anymore (dealer techs).
__________________
Pete & Joan & "Honey" fur-baby.
2015 Montana 3611RL 2012 F350 6.7 DRW Lariat
Disc Brakes & Sailun 14 ply S637
6-pt Hydraulic leveling
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04-06-2019, 05:39 AM
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#6
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Montana Master
Join Date: Oct 2017
Location: Bastrop
Posts: 2,892
M.O.C. #20753
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AGM is basically the same chemistry as flooded cells. So if wired properly the standard Converter will work. The only wild card may be the age of your converter. You can verify it by looking it up in your manual. My manual for my converter clearly states it supports AGM batteries
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Mocha, one-eyed toothless, hurricane survivor, Pirate dog
2019 20th Anniversary Edition 3701LK
B&W 20K for Ford OEM Puck
2018 Ford F-350 Lariat CCLB PSD DRW KJ5CQH
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04-06-2019, 10:37 AM
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#7
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Montana Fan
Join Date: Oct 2015
Location: Round Rock
Posts: 475
M.O.C. #17905
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Mine is a 2015, seems like it should be new enough. Will check manual. Was very confused when talking to techs and they all had different opinions AND one said he had been there 17 yrs. and he said "no, would not work....I think". Kinda scary dropping off rig there with all these opinions floating around. But they have done other repairs for me with no issues. So just wanted reassurance from some of you guys who have been there done that. Thanks. I'll check manual or get model # and look it up. I know I have read where many of us have done this 2-12v swap to 2-6v AGM with no issues.
__________________
Pete & Joan & "Honey" fur-baby.
2015 Montana 3611RL 2012 F350 6.7 DRW Lariat
Disc Brakes & Sailun 14 ply S637
6-pt Hydraulic leveling
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