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Old 09-18-2021, 11:02 AM   #1
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Battery Tender

I am replacing my engine and house batteries. My RV is garaged and I can plug it in. Would I be better off using a battery tender to keep the batteries charged to reduce wear on the inverter?

I assume if I use a battery tender than my battery disconnects should be off, or does it matter.

If the tender is the best way to go, are there any recommendations?

Thanks in advance.

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Old 09-18-2021, 11:26 AM   #2
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If you can plug it into AC Power then let the Inverter/Charger do what it is designed to do....maintain/charge batteries

Leave Battery Disconnect ON/Closed
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Old 09-18-2021, 12:37 PM   #3
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A lot of the older Monaco, Holiday Rambler do not have a maintainer on the chassis batteries.. I installed one. So my inverter charger takes care of the house batteries and my maintainer, which I mounted in the battery bay takes care of the chassis batteries.. I ran a cord to a outlet on the side of my house for the maintainer.
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Old 09-18-2021, 12:54 PM   #4
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I'm in the minority and prefer to turn both chassis and house batty switches off, inverter/ charger off and I use Battery Minders (TM) to maintain both.
Chassis is a small 1.5A or 2A unit and for house I bought their selectable 2-4-8A unit. Both are multi phase quality maintainers and I have had excellent results with them.i have kept a few AGM UPS battys that were being replaced on PM sched on maintainers as stand by for 10 yrs + and have then placed them in service with some still going after another 5 yrs of use.
I can't see running an inverter 24/7 unattended in storage, when it is not needed. Many are designed for 100+A input/output and there have been instances where they have caught fire.
I permanently mounted my maintainers and wired them so one short extension cord near storage outlet takes care of both. Bonus is storage unit doesn't charge me for power since I don't plug in MH and only use small maintainers with next to nothing for draw.

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Old 09-18-2021, 08:32 PM   #5
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Does you inverter have charge only function.?
Many posts on my coach trips GFCI at garage.The inverter will then draw down batteries.
There are decent dual bank boat battery charger \maintainers for around $100 .While not intended as a 12v convertor they have enough power for you to go out in coach use some lights and radio ect. and have batteries soon back to full if you use some more than it put out for a few hours.
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