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Old 03-10-2017, 11:48 PM   #1
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Question New Axis owner - battery tender question

We're first time RV owners and never used battery tenders before. I saw this Battery Tender unit at Costco and am wondering if it would be suitable for the Axis chassis batteries when it's in storage. Can any Axis / Vegas owners chime in?
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Old 03-11-2017, 12:05 AM   #2
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If you have access to 120V why don't you just leave it plugged in and in "Use" mode? I would. (Or if you're worried about the converter overcharging the batteries simply just plug it in for every weekend or so.)
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Old 03-11-2017, 01:07 AM   #3
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Oh yeah... I do have access to 120V inside my enclosed storage. I saw some discussions on battery tenders here and thought it was something we needed. Thanks JamieGeek. 👍🏻
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Old 03-13-2017, 09:38 PM   #4
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Depending on the sophistication of your on-board charging system, I would opt for using a battery maintainer. Some on-board charges can over charge and boil the electrolyte from your batteries. Since I have AGM coach batteries, I use a maintainer specifically for AGM batteries and a different maintainer for the engine battery. I also have a knife switch to completely remove the coach batteries from the system.
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Old 03-13-2017, 10:29 PM   #5
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On most of the coaches you can just plug in to 120v, put the store/use switch in the "use" position and forget about it. Check the water in your batteries occasionally.
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Old 03-13-2017, 10:33 PM   #6
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Quote:
Originally Posted by Metalman View Post
Depending on the sophistication of your on-board charging system, I would opt for using a battery maintainer. Some on-board charges can over charge and boil the electrolyte from your batteries. Since I have AGM coach batteries, I use a maintainer specifically for AGM batteries and a different maintainer for the engine battery. I also have a knife switch to completely remove the coach batteries from the system.
It's an Axis. I'm guessing not very sophisticated. I don't know if the batteries are AGM or not. And I just noticed in my original post, I asked about maintaining the chassis battery when I meant the house batteries.
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Old 03-13-2017, 10:40 PM   #7
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I can almost guarantee you don't have AGM batteries. The coach battery will also charge when you are plugged in.
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Old 03-13-2017, 10:48 PM   #8
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Thanks SuperD. 👍🏻
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Old 03-13-2017, 11:11 PM   #9
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Nope no AGM batteries to be found on an Axis. Just crappy Harris ones.
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Old 03-13-2017, 11:13 PM   #10
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Quote:
Originally Posted by TexAxis View Post
It's an Axis. I'm guessing not very sophisticated. I don't know if the batteries are AGM or not. And I just noticed in my original post, I asked about maintaining the chassis battery when I meant the house batteries.
SUPERD is right, if plugged into SHOREPOWER the CHASSIS and COACH battery receives charge (as long as the STORE/USE switch is in USE mode)
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Old 05-06-2017, 04:47 AM   #11
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Originally Posted by Metalman View Post
Depending on the sophistication of your on-board charging system, I would opt for using a battery maintainer. Some on-board charges can over charge and boil the electrolyte from your batteries. Since I have AGM coach batteries, I use a maintainer specifically for AGM batteries and a different maintainer for the engine battery. I also have a knife switch to completely remove the coach batteries from the system.
Metalman, I replaced my dead Axis coach batteries with AGMs. Would you mind sharing the maintainer you use with your AGM batteries?
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Old 05-06-2017, 04:54 PM   #12
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The charger is "Batteryminder 2012-AGM". Prices vary from well over $100 at Northern Tools to the $80 range from Amazon.
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