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Old 06-08-2007, 08:27 PM   #71
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Quote:
Originally Posted by SmokelessJoe
Last week I visited the Ontario distributor for Lifeline Batteries.

Mobile Power Solutions, at locations in Toronto and Montréal, install AC/DC power systems in police command centers, ambulances, fire trucks, utility vehicles and the like.

The manager there swears that I don’t need a vented container for a Lifeline AGM. He’ll take my money for one but says I don’t need it.

He claims they’ve installed Lifelines SIDEWAYS under the seats in fire trucks without problems of any kind.

His professional advice runs counter to information on the Forum. What do people on this thread think?


Sergei
I called Lifeline last week, since my 2 Group 27 Interstate battereies show signs of getting weak.
Their customer service tech said that the batteries do not need a vented box, such as lead-acid batteries should have. He also said that they can be mounted in just about any position, without a problem.
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Old 06-08-2007, 09:26 PM   #72
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I like the advice Randy gave in post #19.

The NEC requires that RV batteries be outside, or in a compartment vented to the outside. Until that changes I doubt you will see AGM batteries mounted inside without a vented box.

It's your trailer so do what you want. At least put a sticker on it so the next owner doesn't replace your AGM battery with regular deep cycle battery and have an unfortunate accident.
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Old 06-11-2007, 06:20 PM   #73
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I just got off the phone with Andrew at Lifeline and I think there is STILL some confusion. They do not need a vented box and under normal conditions will never gas. This is a true statement until "living quarters" is introduced because the NEC says what it says, right or wrong. Some other human occupant compartment, such as an airplane or automobile, or boat, etc might be different but I think of living space as where you also sleep and that may or may not be the intent of the code.
If they should accidentally over charge, they will equalize pressure or "burp" the same gas as a LA battery however the amount is less than half of the mil-spec minimum hazard level according to Lifeline. What does that have to do with an RV? maybe nothing but Lifelines are Concords and made to mil-specs as they are their number one customer.
Without a doubt, they can be mounted as needed but the codes have not been changed to my knowledge as far as batteries in the living compartment.
I'd like to be wrong and market them as such but just can't.
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Old 05-04-2010, 02:27 PM   #74
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Just to update the thread, the box shown earlier is a Dyno box. I had one on my SOB and I am now installing a 2/6V on the Safari.

Dyno Product 3

I purchased mine from All Battery Sales and Service. Battery Boxes ~ All Battery Sales and Service

Best Converter sells some nice boxes too. In particular Randy sells some really sweet looking aluminum boxes. They were just a bit tighter than I wanted to be on my installation.

As a further note, I have had no problems with the Dyno box on my SOB holding up outside directly in the sun year round after several years.
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Old 04-26-2011, 08:13 AM   #75
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So do I need a box for AGM?

I have read all six pages of this old thread, and am almost set on 2 6v lifeline batteries for my trailer, and do not plan on venting them to the outside.

i wanted to see if anyone has since out these sealed batteries in their "living quarters and lived to tell about it??
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Old 04-26-2011, 08:23 AM   #76
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With two 6 volt batteries if one goes bad you have no power to run stuff. With two 12 volt batteries you can still run stuff if one goes bad.
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Old 04-26-2011, 10:58 AM   #77
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Andrew, I have lived to tell about it.

These are the pair of Odyssey Extreme Power AGM marine batteries I had installed just before I began my recent 165 day tour of your part of America.

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They are under the sofa/bed, midship, unvented.

Before I bought the AGM's I had a single, everyday Interstate battery in that position, unvented. I lived in the trailer for three summers while completing the project and suffered no ill effects.

But that may have been because the trailer wasn't going anywhere; the battery was probably always in a full state of charge.

About the AGM's being un-vented, I was guided by the fact that the professionals that sold and serviced these batteries knew how they were being used, sold boxes as well and didn't think I needed them.

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Old 04-26-2011, 11:10 AM   #78
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Alive!

Great Sergei, just what I was looking for. Dang, I really should have come to see you in Chattanooga. That setup looks great. Glad you have lived to tell about it!

I will hopefully go with AGM's but the cost may be prohibitive in my current restore...
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Old 04-26-2011, 09:41 PM   #79
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Quote:
Originally Posted by ventport View Post
With two 6 volt batteries if one goes bad you have no power to run stuff. With two 12 volt batteries you can still run stuff if one goes bad.
While a good point, I always revert back my experience. With 6 volt, you have half the chance of a failure because there are half the cells to go bad. Just odds.
Also, they are specifically designed for multiple discharges so a hundred million golf carts can't be wrong (thicker lead plates, etc)
If you lose one, its not the end of the world because they don't just quit without warning like a motor. You will know when any battery is nearing the end of its usefully life if you have been paying attention. I've never met anybody stranded because they had 6 volt batteires.
I'm a 6 volt fan because they work well for me personally and we NEVER have warranty issues with them but I also use 12 volt in my small Lance slide in because that is all that will fit.
"Size does matter" when it comes to Airstreams notorious small battery compartments. Many don't have any option but 12 volt.
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Old 04-26-2011, 10:58 PM   #80
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Randy

I have installed 2 6v golf cart batteries in the rear compartment of my 66 TW and am planning on installing two more for a total of 4. Is the gas that needs to be vented heavier or lighter than air? If it is heavier, than I think I am fine, but if it is lighter than I will probably need to add some ventilation. If so, then how much vent area is needed?

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Old 04-27-2011, 07:28 AM   #81
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I love 6v batteries because of their durability and greater amperage. When you hook two up in series you essentially have one HUGE 12v battery.

I used 6v batteries for years until last year when a battery post broke on one in my Sovereign. I had no 12v power on the last day of a trip because of this and it really sucked. Failures are rare but they can happen. In this particular case, the fault was mine as the 2/0 inverter cable I had connected to the post was under too much tension. Would I use 6v batteries again? Probably, but it depends on the numbers and application. I may use them again for my Overlander.
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Old 04-28-2011, 12:20 PM   #82
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Dan:

Hydrogen, the gas vented by lead acid batteries, is lighter than air. To remember, just keep the Hindenburg in mind. Hence the venting no venting discussion.
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Old 04-29-2011, 05:00 PM   #83
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Soyboy is correct Dan, its lighter. I highy doubt they will ever recommend storing them in living quarters non vented.
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Old 04-29-2011, 05:16 PM   #84
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Agree with Soyboy and Randy.

In fact, hydrogen is not just light, it's the lightest thing there is!
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