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05-06-2019, 07:23 AM
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#1
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Junior Member
Join Date: May 2019
Posts: 4
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Battery not charging when hooked to shore power
Good morning all,
I just purchased a 2016 forest river grey wolf 26dbh a month or so ago. I put a new battery in it and gave it a full charge. The problem I am having is that when I am hooked up to shore power it is not charging the battery and when it drains down I lose power in the travel trailer. I checked all the fuses and they all look good. Anyone know what the problem might be? Thanks in advance!
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05-06-2019, 07:26 AM
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#2
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Senior Member
Join Date: Jun 2013
Location: Between Pickles Gap and Toad Suck, AR
Posts: 6,070
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Bad converter maybe??? Try putting an external battery charger on the battery and see if that works. IF SO, either the converter is bad, or the wiring to/from it might be loose or bad. That's my first thoughts on it.
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2016 GMC Denali 3500Dually--2017 CC 36CKTS
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05-06-2019, 07:29 AM
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#3
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Junior Member
Join Date: May 2019
Posts: 4
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Thanks! I put an external charger on it and it charges the battery and keeps everything running. I’ll check the converter wiring.
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05-06-2019, 07:33 AM
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#4
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Senior Member
Join Date: Oct 2014
Location: Wilmington, De
Posts: 239
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Make sure battery disconnect switch is on. Converters also have fuses on them
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05-06-2019, 07:47 AM
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#5
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Site Team
Join Date: Oct 2014
Posts: 15,288
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There are two high current fuses 30 or 40A either in the distribution panel or the back of the converter. They will blow if the battery is connected backward. Check to see that they are good. There is also a resetable breaker on the bottom inside of the frame near the hitch. Looks like the attachment below. Try pushing the small button on the side to reset it.
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05-06-2019, 08:20 AM
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#6
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Pickin', Campin', Mason
Join Date: Aug 2015
Location: South Western PA
Posts: 19,142
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Here is where the high current/reverse polarity fuses are typically located in the converter. (inside red outline) Often times they get blown when replacing a battery and someone touches the cabling to the posts incorrectly.
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05-06-2019, 04:17 PM
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#7
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Site Team
Join Date: Jan 2007
Location: Goodyear, Arizona
Posts: 33,780
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Could've tripptripped the 12v resettable circuit breaker.
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05-06-2019, 04:42 PM
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#8
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Senior Member
Join Date: Jul 2017
Posts: 4,055
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If it works with the battery the resettable breaker is good and the battery disconnect is connected otherwise w
He would get nothing. Op needs to check converter fuses 120 v breaker to the converter and should have a meter to check it so he can determine if the converter is bad
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05-06-2019, 05:15 PM
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#9
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Site Team
Join Date: Nov 2010
Location: Northeast Louisiana
Posts: 33,917
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Yeah, I'm thinking the reverse polarity fuses are blown to the converter, since the converter is also what recharges the battery.
Very common thing.
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 2011 Flagstaff 831 RLBSS
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05-07-2019, 08:19 AM
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#10
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Junior Member
Join Date: May 2019
Posts: 4
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I’ll check those fuses. Thanks for all the help.
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05-07-2019, 12:58 PM
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#11
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Senior Member
Join Date: Apr 2015
Location: Ontario, California
Posts: 2,146
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Quote:
Originally Posted by wmtire
Yeah, I'm thinking the reverse polarity fuses are blown to the converter, since the converter is also what recharges the battery.
Very common thing.
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Evidently they can blow for reasons other than just a reversed polarity. I over loaded things one day and had to reset the manual breaker under the tongue. Since I rely on shore power very infrequently, I was several trips down the road before I realized that the converter was not charging. (ain't solar wonderful). I had blown the 40 amp converter fuse too.
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05-07-2019, 01:01 PM
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#12
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Pickin', Campin', Mason
Join Date: Aug 2015
Location: South Western PA
Posts: 19,142
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Quote:
Originally Posted by Tom48
Evidently they can blow for reasons other than just a reversed polarity. I over loaded things one day and had to reset the manual breaker under the tongue. Since I rely on shore power very infrequently, I was several trips down the road before I realized that the converter was not charging. (ain't solar wonderful). I had blown the 40 amp converter fuse too.
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Yes, if the battery(ies) is/are severely discharged, the current output to charge the battery(ies) will sometimes be higher than the fuse protection and pop the fuse.
__________________
2022 Cedar Creek 345IK 5th Wheel•Solar & Inverter•2024 Ford F-Series SCREW•7.3L•4x4•Factory Puck•B&W Companion•TST Tire Monitor w/Repeater•Sinemate 3500w Gen.
F&AM Lodge 358 Somerset, PA - JAFFA Shrine - Altoona, PA
Days Camped ☼ '19=118 ☼ '20=116 ☼ '21=123 ☼ '22=134 ☼ '23=118☼ '24=90
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