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Old 04-23-2017, 04:35 PM   #1
Skrewball's Avatar
Join Date: Mar 2017
Posts: 54
Starting System keeps dying 34' H.R. Monitor MH

Hey all,

I've got a brand new starting battery in our MH. We are plugged into external 30a power but for some dang reason every week or so we have to change our new starting battery just to start our MH.
We have a "Guest Master Switch" that is currently in the on position....does it need to be switched off?

Within the engine compartment we have a "Multi-Battery isolator"but it's not connected to anything and there's even a second battery(Starting system) but it isn't connected either.

We also have a button(store or use) next to the battery voltage check button however it does not appear to really do anything. Are the overhead lights draining the battery even though we're plugged in?

Any thoughts on this will be very helpful hopefully.... I'm stumped. Thanks!!
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Old 04-23-2017, 05:00 PM   #2
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Posts: 373
If I understand correctly you are working with only one battery, and your house battery is not even connected. Someone modified your system and it's obvious it's not doing its job. Sounds DS like your shore power maybe doing good it's job on 110v., and your only battery is doing the 12v stuff. You didn't mention a converter other inverter....

This is best left to a professional, in MY opinion.
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Old 04-24-2017, 10:23 AM   #3
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Posts: 54
My coach batteries are operating normally. But every weekend I have to chart my battery in order to start my Rv. I'm clueless as to why....
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Old 04-24-2017, 02:28 PM   #4
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Join Date: May 2014
Location: Montréal, QC
Posts: 178
It's normal your engine battery is not charging when on shore power, you need something like a Trick'l'start for this.
As for why it discharges in 1 week, it's because something is draining it faster that it should, maybe your radio is using the engine battery?
You describes having a second battery unplugged, which is strange too...
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Old 04-24-2017, 11:38 PM   #5
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Yeah, the second battery is not connected and nothing is connected to the MULTI-BATTERYA Isolator either. Were not running any of the items that would normally run off of the starting battery like the accessories(Driver/Pass Fans), Overhead A/C Units or even the radio. Our CB isn't connected so that isn't draining.

I'm stumped!
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