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Old 03-17-2015, 12:17 AM   #1
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Batteries Inside Living Space or Below Bus?

Hey friends,
Ive always planned on keeping my batteries in a closet inside the bus under the couch, but lately im thinking about storing them in a metal box under the bus. My worry is the ambient temp will cause problems if the battery box is all out in the cold. We sometimes go a few weeks without getting above freezing and will go as low as -15 a couple nights.
Id like to have the extra space inside the bus if I can do this.
Any thoughts? Anyone with experience?
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Old 03-17-2015, 07:56 AM   #2
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i have a home pv system, when batterys are drawn down they can freeze and bust or short out. they should be kept room temp in a sealed box with a vent going outside. you can still have them below the bus but the air intake for the batt box should come from the inside of the bus with a back flow devise to keep the gases from entering the living space and sending you to the moon.
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Old 03-17-2015, 09:51 AM   #3
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I have 4 sealed DEKAs under the bed. They are sealed, they can be used on their sides, or whatever.
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Old 03-17-2015, 09:58 AM   #4
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I once owned a battery powered car ('81) that had the batteries under the bench seat. The company was forced to redesign the car so the batteries would be out of the space containing driver and passengers. They moved them to the space between the bumper and the vehicle (partly to piss off Ralph Nader). That did it. The car and company was doomed. Their plastic body panel formula was taken by GM and used in certain vehicles.
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Old 03-17-2015, 10:07 AM   #5
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old vw's and some corvettes had batteries in the pass compartment. I'd vent them to the outside. The hydogen gasses emitted while charging can go "boom" if ignited.
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Old 03-17-2015, 12:38 PM   #6
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the 2002-ish buicks had battery under seat and the battery actually had a rubber vent that went through the floor, not alot of hydrogen buildup with a start battery in a car application
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Old 03-17-2015, 01:29 PM   #7
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Talking great tips

Quote:
Originally Posted by superdave View Post
i have a home pv system, when batterys are drawn down they can freeze and bust or short out. they should be kept room temp in a sealed box with a vent going outside. you can still have them below the bus but the air intake for the batt box should come from the inside of the bus with a back flow devise to keep the gases from entering the living space and sending you to the moon.
Good to know that they should be inside, I was unaware of that and told my fiance I wanted them outside to save living space! I will adjust my plans again!
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Old 03-17-2015, 02:47 PM   #8
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See, this is where the personal choice comes in. There's no "right" location for them. I'm putting them outside in a compartment. Others put them inside. Put them wherever it works for you. You just have to deal with the consequences (applies to all choices to be made).

Note that superdave's freezing comment was about a particular circumstance. Batteries don't freeze in normal use - otherwise they wouldn't be very useful in a car or bus parked overnight in winter, would they? A PV system can draw them down enough to create some risk, though. But you could also resolve that with a compartment heater - either one of the mats used to keep water tanks/lines from freezing, or something like a "Goldenrod", which they use in boat closets over-winter to dehumidify them. It doesn't need to keep the battery at 70...

SO much to think about just in this one point. Wiring, service access, gas venting, space usage, weight/balance, etc., etc.
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Old 03-17-2015, 03:30 PM   #9
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Quote:
Originally Posted by charles_m View Post
Hey friends,
Ive always planned on keeping my batteries in a closet inside the bus under the couch, but lately im thinking about storing them in a metal box under the bus. My worry is the ambient temp will cause problems if the battery box is all out in the cold. We sometimes go a few weeks without getting above freezing and will go as low as -15 a couple nights.
Id like to have the extra space inside the bus if I can do this.
Any thoughts? Anyone with experience?

Where did the manufacturer of your bus put them?
On the bus I will be picking up in June, they're out side. It was -25 give r take most of Feb. this year....the cold will let you know if you have a weak Battery
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Old 03-17-2015, 04:34 PM   #10
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Wow. Thanks for the replies. I know this is a situation where there is no right or wrong answer so Im just looking for opinions and experiences. The manufacturer states the batteries should be kept between a narrow temperature window to preservw batt life, etc. I wont be drawing down below 50% as a rule. Im just thinking that I really want the floor space and deal with the consequences of batts outside the living space.
An insulated battery box seems like a waste of effort.
probably just a steel/aluminum box.
Makes venting super easy
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