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Old 12-04-2021, 07:08 PM   #1
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Dead house batteries

Both my chassis and house batteries were dead. I replaced the chassis and started the coach. I was also able to start the generator.

What can I do to obtain house power? On my way to FL and need lights, heat, etc. I have tried to jump my house batteries to see if I can get my electric info center on? Steps are out as well and I would like to get them in.

Is there anything I can try before purchasing 8 new batteries? Need to get the inverter on.

2019 Mountainair
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Old 12-04-2021, 07:12 PM   #2
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Will your boost switch do the job?

If not you could just buy a Walmart battery to get you by.

If all your batteries are in the same bay you could even use one of your chassis batteries in a pinch

If just two of your 8 house batteries are good that would work also
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Old 12-04-2021, 07:35 PM   #3
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If your house batteries are not charging while driving, the isolation /charging /boost solenoid isn't working.
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Old 12-04-2021, 07:39 PM   #4
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Some inverters will not charge the batteries if they have discharged too much. Use a car charger to put some life back in your batteries. I like the 15amp Everstart Charger that walmart sells. It may take 10-14 hours. If your batteries are still good, then your inverter/charger should be able to maintain the charge.
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Old 12-05-2021, 07:11 AM   #5
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Some inverters will not charge the batteries if they have discharged too much. Use a car charger to put some life back in your batteries. I like the 15amp Everstart Charger that walmart sells. It may take 10-14 hours. If your batteries are still good, then your inverter/charger should be able to maintain the charge.
Thanks. I did this one time however, the factory rep had me disconnect a plug behind my electric reel. I can’t seem to remember which one. I did place a charger on all night last night. My panel will not light up yet.

Thanks!
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Old 12-05-2021, 09:16 AM   #6
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Unfortunately I’ve had this happen a few times in my ‘18 MA. My understanding is there’s a solonoid that will shut off power between the batteries and house once the battery charge drops below a certain level. Don’t remember what that point is. They have to be charged above this point before the solenoid will open. I’ve used a large HD charger (1’x1’x2’ don’t remember the amp rating) and can take up to 10 hrs from completely flat. My suggestion is keep charging them. Once they’re charged sufficiently the solenoid opens, the house power will operate normally and the batteries can be charged thoroughly through the inverter with shore power or genny.
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Old 12-05-2021, 01:00 PM   #7
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Quote:
Originally Posted by dpotts View Post
Both my chassis and house batteries were dead. I replaced the chassis and started the coach. I was also able to start the generator.

What can I do to obtain house power? On my way to FL and need lights, heat, etc. I have tried to jump my house batteries to see if I can get my electric info center on? Steps are out as well and I would like to get them in.

Is there anything I can try before purchasing 8 new batteries? Need to get the inverter on.

2019 Mountainair
You might want to double check the 12v circuit breakers. I had a similar issue on our rig awhile back, it drove me flippin nuts... Engine running, nothing, Jenny running, nothing, no charge... Everything on the 12v side of the panel worked great as long as we were plugged in to shore power, or the jenny was running, but pull shore power or shut down the jenny? and nothing functioned on 12v.. So after pondering the problem a few days, suddenly it slapped me up side the head...... Gee, I had forgot to check the CB's in the EE bay. Bingo, one had popped, so I reset it, and suddenly I had 14v on the interior monitor panel. I did a systems check by pulling shore power, and YES I still had 12v's to the coach... YEA, problem solved...
So even though you might have done what most people do, and checked the fuses... DON'T forget those pesky inline 12v circuit breakers...
Hope you get things figured out..
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