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05-15-2021, 03:19 PM
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#1
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Junior Member
Join Date: Oct 2019
Posts: 6
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Disable Battery Charger
How can I disable the battery charger in my a122bh?
I have a solar system and a 1500W inverter, I would like to plug the trailer into the inverter and use the inverter as needed, but I don't want the trailer to attempt to charge the battery while the solar is doing the same thing
Because if i am inverting the 12V into the trailer, I don't want the battery to be charging itself off it's own power (if that makes sense)
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05-15-2021, 06:00 PM
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#2
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Senior Member
Join Date: Jan 2016
Location: SW Ohio
Posts: 1,023
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I'm no expert here, but I don't think the power converter charges the battery unless it's plugged into 110.
How are you wiring your inverter? I would think you need a switch between the inverter and controller.
This forum is full of info on RV electronics: https://www.forestriverforums.com/forums/f218/
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05-15-2021, 06:21 PM
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#3
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2012 Solera
Join Date: May 2012
Posts: 1,824
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Flip the converter circuit breaker off (assuming your unit has a separate converter).
__________________
JLeising
2012 Solera "S"
Calif SF Bay Area
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05-15-2021, 06:28 PM
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#4
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Senior Member
Join Date: Jan 2016
Location: SW Ohio
Posts: 1,023
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This is an A-Frame subforum. The OP is adding an inverter (not OEM). There's no such breaker i know of.
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05-15-2021, 08:02 PM
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#5
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Junior Member
Join Date: Oct 2019
Posts: 6
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yes. what i'm saying is, I have an inverter that I want to plug the entire trailer into... it's the battery that comes with the trailer, so it's wired to the camper AND the solar kit AND the inverter
Since my trailer charges it's battery when plugged into 110, I need to not allow that to charge the battery as the battery would be, essentially, charging itself off it's own inverted power
i wouldn't be running anything too heavy off it, but would be nice to have
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05-15-2021, 08:41 PM
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#6
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Senior Member
Join Date: Jan 2021
Posts: 160
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Quote:
Originally Posted by z0mbieSt0mp
yes. what i'm saying is, I have an inverter that I want to plug the entire trailer into... it's the battery that comes with the trailer, so it's wired to the camper AND the solar kit AND the inverter
Since my trailer charges it's battery when plugged into 110, I need to not allow that to charge the battery as the battery would be, essentially, charging itself off it's own inverted power
i wouldn't be running anything too heavy off it, but would be nice to have
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Is it just an inverter or an inverter charger? If the later, you'd want to disconnect and uninstall the current converter.
__________________
Larry
2021 Riverstone Legacy 42FSKG
2016 RAM 3500 DRW
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05-15-2021, 08:50 PM
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#7
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Junior Member
Join Date: Oct 2019
Posts: 6
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just a 1500W inverter.
I don't want it to charge at all
is there a fuse or circuit breaker, maybe?
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05-15-2021, 09:07 PM
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#8
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Senior Member
Join Date: Mar 2016
Posts: 734
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Yes, there's a breaker but it's possible that it also feeds another device, possibly the 120-volt side of the fridge. You'll need to determine which breaker powers the converter by checking the battery voltage with a dc voltmeter and turning each breaker off to see which one causes the voltage to drop slightly, signifying the battery is no longer being charged by the converter.
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05-15-2021, 09:27 PM
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#9
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Senior Member
Join Date: Jan 2020
Posts: 4,866
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+1 what 18LT posted! That's exactly what you need to do. Might be hard to tell the voltage difference, though, if solar is also charging the battery at the time. Do it at night, with the trailer plugged into shore power.
Combination inverter/converters in one unit are very rare and expensive. There is likely a completely separate converter with it's own AC circuit breaker on the input side.
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05-16-2021, 12:28 PM
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#10
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Senior Member
Join Date: Mar 2014
Posts: 3,098
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The newer A-frames have the converter wired into another AC circuit, often the fridge, because that's the way WFCO supplies their combined panel/converter. When I replacing the WFCO, I discovered this stupid way of wiring the AC circuits. I separated the 2 black wires, and ended up buying 2 half-width circuit breakers to power the converter and fridge separately. I used 10 amp breakers (could get away with 5 amp for fridge) on each, because neither device draws more than 500 watts. But smaller breakers than 10 amp are harder to find at my Home Depot, and the wiring is good for 15 amps.
Fred W
2019 Flagstaff T21TBHW A-frame
2008 Hyundai Entourage minivan
camping Colorado and adjacent states one weekend at a time
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05-16-2021, 12:47 PM
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#11
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Senior Member
Join Date: Mar 2016
Posts: 734
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That is exactly the way I would rectify the problem.
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