Battery setup: is it safe? How to charge? - Page 2 - Fiberglass RV


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Old 10-24-2014, 02:53 PM   #15
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Name: Emilie
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Ok, fair point on the generator.

So, if I buy a deep cycle AGM battery and a vented battery enclosure, I will still need a way to vent it to the outdoors, right? I don't think my Boler has an opening to the outside down there. I know the fridge has a vent in the back that releases C02 outside, but that's the closest thing I see to where the battery is situated. Am I missing something?
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Old 10-24-2014, 03:43 PM   #16
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First, if you buy an AGM battery, not only will it be a lot more expensive, you MAY need to buy a special battery charger so as to not damage the battery. Check with the mfgs' specs first.

Battery compartment vents are simple 3" round plates with louvers you can easily install on the skin of the trailer adjacent to the battery location.

CO2 is carbon dioxide and it's safe. CO is carbon monoxide and is a dangerous byproduct of combustion. Actually your refrigerator requires venting for both the combustion process as well as the cooling process.
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Old 10-25-2014, 09:42 AM   #17
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C0 is what I meant, obv.
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Old 10-25-2014, 09:20 PM   #18
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There's no way to charge a battery while it's in use, right? I will have to plug in the charger every time it gets down to 50%, and then once it's charged, unclip the charger in order to use the battery again, correct?
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Old 10-25-2014, 10:11 PM   #19
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No need to unplug the charger if you're not doing heavy loads (like using a big inverter.) Only risk is you might blow the fuse on the charger if the load is too big.

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Old 10-26-2014, 10:16 AM   #20
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Originally Posted by Emilie W. View Post
There's no way to charge a battery while it's in use, right? I will have to plug in the charger every time it gets down to 50%, and then once it's charged, unclip the charger in order to use the battery again, correct?
Actually if you are going to be full timing and want your battery to last more than a couple of years its better if you don't allowed to drop below 35% discharge. I am assuming you are going to be plugged in to power for heat & fridge etc? over the winter? Have you considered installing a converter which most of our trailers have - it has a built in battery charger and will allow you to run items such as a heater and a fridge on 110 without depleting the battery. Its a good bet your fridge would not run for more than about 8 hours on the battery - may be far less on the battery without the battery needing recharging.

As far as your questions on venting the battery goes if you look at the photo of the battery box that Ian posted you will see on the hose that goes to the outside there is a small round vent of about 2" on the end of it - that goes on the outside of the trailer - you would need to cut a hole in the trailer to accommodate it.

Or as others have suggested you could just move the battery out onto the tongue of the trailer as many Boler owners have done. The moving of the battery to the outside solves the issues with venting and it gives the extra storage space inside as well.
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Old 10-26-2014, 10:44 AM   #21
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If you really don't want to deal with venting and rarely have to recharge, there is a rather expensive fix:

12V 300AH Lithium Ion Battery | Chargers and Voltmeters | Smart Battery - Products

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Old 10-26-2014, 01:13 PM   #22
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If you really don't want to deal with venting and rarely have to recharge, there is a rather expensive fix:12V 300AH Lithium Ion Battery | Chargers and Voltmeters | Smart Battery - Products
Charlie Y
That battery is one penny less than I paid for my Scamp, think I will pass until the price comes down. It is a very nice battery though.
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Old 10-26-2014, 01:32 PM   #23
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If you really don't want to deal with venting and rarely have to recharge, there is a rather expensive fix:

12V 300AH Lithium Ion Battery | Chargers and Voltmeters | Smart Battery - Products

Charlie Y
Now thats a battery! rather like "Lightweight - up to 70% lighter than lead" but I think a better return on the $4000.00 purchase price would be to put it towards a new trailer!
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Old 10-27-2014, 10:33 AM   #24
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This is frustrating. I feel like we're speaking a different language.

The only way to plug anything into a 12v battery is with alligator clips, right? And you can only clip on one set at a time. So how is it possible to both USE the battery to power your lights, etc. at the same time as you are charging it?
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Old 10-27-2014, 12:12 PM   #25
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Emilie

RV deep cycle batteries not only have posts like an automotive battery but also have threaded studs that you can put several wires on.
Here's a picture of a die hard that shows them well.
Sears.com
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Old 10-27-2014, 12:59 PM   #26
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Originally Posted by Emilie W. View Post
This is frustrating. I feel like we're speaking a different language.

The only way to plug anything into a 12v battery is with alligator clips, right? And you can only clip on one set at a time. So how is it possible to both USE the battery to power your lights, etc. at the same time as you are charging it?
Emillie it is really hard to advise you as to what to do without knowing a lot more about your Boler and what it has and does not have and what the previous owner has done to it.

Have to tell you I have honestly never seen a trailer owner (Boler or otherwise) remove their battery from the trailer and use a solar panel on a picnic table to recharge it as the previous owner suggested you do. Not that it would not work assuming one had a large enough panel & lots of time that you did not need to use any power in the trailer but it really is not a very practical way to charge a battery and would grow old real fast!

There is a website that would be a great place for you to gain a bit more information in regards to how trailers power systems work - Its called The 12 Volt Side of Life.


There are a number of ways to charge the battery and leave it on the trailer while you continue to use everything in it. You could have a power converter installed that has a built in smart charge that continues to charge the battery while you are plugged into power. You could also just have a smart charger installed that would charge the battery when you are plugged into power and allow you to continue to use the lights etc. Or you could have in addition to either of those a solar controller attached to the battery that when solar panels are attached to it charges the battery while still allowing you to use the lights and anything else that runs on 12v.
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Old 10-27-2014, 02:18 PM   #27
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Thank you, Joe! That helps.
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Old 10-27-2014, 11:38 PM   #28
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Hi

My questions are:

1. Is simply having the battery inside under the seat safe? Will my dog and I die of poisoning or will it start a fire just sitting in there?

No but bit is dangerous. It causes heat. Heat rises and that updraft is a magnet for tornados which come along and such you up into the air.

2. If it is unsafe, should I remove the battery from the Boler and put it outside or in the garage or somewhere else? Or would removing the alligator clips and/or not using the batter-powered lights and fan be enough?

Is it in a battery box? If not put it in one and secure it donut can't move.

3. How should I charge this thing? I'm in my friend's backyard right now and plugged into electric. Someone suggested that I use a trickle charger overnight and just plug it into the AC outlet in my trailer. That seems like it might be dangerous though...

Some sort of a charger that works with your battery type is a good idea.




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