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Old 10-05-2015, 10:57 PM   #1
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Newbie Winterization Advice

Very familiar to trailering and winterizing a 5th wheel trailer but need some advice now that we are a motorhome family. Interior side is all good, put antifreeze in lines, left fridge open etc.. but I am curious what to do with the chassis and coach batteries. I have a 2013 Seneca 37RB with 4 coach batteries and 2 chassis batteries. The coach batteries can be easily removed for storing inside over winter, but the chassis batteries are under the drivers seat and appear to be not easily removed, hence, I don't want to pull them out and I don't want to have to replace 2 dead batteries in he Spring. Should I leave a trickle charger on them over the winter to stay charged? Will they get charged if I leave all the batteries (chassis and coach) in and stay hooked up to shore power? Just wondering what others do.

Thanks
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Old 10-06-2015, 01:43 AM   #2
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you are gonna want to start your motor and generator once a month so you might want to keep the batteries in.
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Old 10-06-2015, 10:38 AM   #3
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There are 2 handy attachment points for a trickle charger on the rt side of the engine so you don't need access to the chassis batts. Hopefully they pointed that out in your walkthrough. If you are in a very cold climate, besides running at least once per month, I would put on a trickle charger.

Also, if you aren't aware, there is a plug in near the chassis batts for engine heater.
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Old 10-06-2015, 01:07 PM   #4
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I live in Canada also clDuke72 and I remove both batteries. I do not start my MH during the winter months. I put my coach battery on a trickle charger and come spring change it to my chassis battery. I also put a fuel stabilizer in with a full tank of gas.
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Old 10-06-2015, 03:50 PM   #5
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Quote:
Originally Posted by WaltW View Post
There are 2 handy attachment points for a trickle charger on the rt side of the engine so you don't need access to the chassis batts. Hopefully they pointed that out in your walkthrough. If you are in a very cold climate, besides running at least once per month, I would put on a trickle charger.

Also, if you aren't aware, there is a plug in near the chassis batts for engine heater.
Are these "2 handy attachment points" easy to find on Class C's, specifically a GH 31??
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Old 10-06-2015, 06:50 PM   #6
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WaltW, any chance you have a picture or a better description of where to find these attachment points? Unfortunately me dealer did not provide a very thorough walk through with this trailer.

Marshmellow, just so I understand the terminology the coach battery is your battery(s) for the engine? The batteries for the interior appliances and lights etc are easily removed with the pull out tray.

Has anyone ever confirmed that the shore power connections will charge every battery coach and chassis?

Sorry for the questions. The two batteries under the drivers side seat appear to be impossible to remove and look very heavy, so if I don't have to pull the out that would save me a ton of grief.

Thanks
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Old 10-06-2015, 08:29 PM   #7
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I'm a new to the Seneca too, I've had one less than 30 days. But from what I've read, if you have house power on (the switch on the entrance steps) and shore power available your house batteries will be receiving charging power; however, your chassis batteries (engine start batteries) will not be charged. There are two terminals in the passenger side front wheel well with rubber covers over them where you can hook a trickle charger to and charge your chassis batteries. I put an amp meter on the two terminals and got a 12.6 volt reading so they are connected to the chassis batteries as that is what the reading in the cab was when I turned the key on. You don't need to hook your Seneca up to 50 amp shore power to charge house batteries, you could use adapters and hook it up to normal house power and charge the batteries as long as nothing else inside the RV was turned on. That's what I have surmised with my limited Seneca experience thus far. My knowledge base is limited here, perhaps more experienced individuals will add in or correct my errors with all this.
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Old 10-06-2015, 08:34 PM   #8
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Here are the terminals in the pax wheel well
Attached Thumbnails
image.jpg  
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Old 10-12-2015, 08:21 AM   #9
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Thanks for all the help guys. Looks like I don't have the jumper terminals, but I'll just put a charger right on the battery terminals.
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Old 10-13-2015, 09:09 AM   #10
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I am fortunate enough to be able to keep my unit plugged in during storage to keep the house batteries charged. I run a battery tender plugged in the 110 outlet by the table and charge the motor batteries through the 12v cigarette ports on the dash. No chargers sitting outside at all.
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