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running batteries inside mobile safely?

This is the place to get help with batteries, alternators, and charging system's.

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running batteries inside mobile safely?

Post by SwampHog » Saturday, 22 November 2008, 21:43 PM

Along with my under hood battery im planning on running a few parallel in the back of my jeep. Im just looking for tips on running batteries inside safely. Im planning on building some type of platform for them and maybe trays then getting them strapped down. Anything I should know or do specificly?

Also, I know its best to run the same batteries as the one under the hood, but if the ones parrell to it are different will it be a big problem? Ive seen lots of pics of guys running semi truck batteries inside, but some people tell me to run the same kind as under the hood.




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Post by Grump » Thursday, 27 November 2008, 7:31 AM

See how hard it would be to set up another altenator and keep it totally seperate system. But I don't think it would hurt if you ran a wire to the second set of batteries just to charge them as long as your altenator can handle it. But I don't think i would want to run batteries inside cause of the gases they put out when getting a charge and if you smoke never put batteries inside cause the gas is explosive also the gases could cause corroding to things inside and if one cracks can really mess up the interior of your vehicle



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Post by Four » Thursday, 27 November 2008, 8:00 AM

the semi batteries are possibly on a separate charging system... but when inside a vehicle i have seen guys (mostly audio) use the cheap $10 battery boxes from oreillys and take the lids and just put pvc fittings on and vent them to the outside of the vehicle to prevent any gaseous buildup in the vehicle.. but that requires some other modifications to the outside of the vehicle as well... exactly what kind of jeep do you have.. some of the wranglers still had enough room under the hood that you could put 2 1000cca batteries under there by building your own tray... just takes some time and measuring....


one thing i have never understood... they say to keep batteries out of high temperature areas.. yet auto manufacturers put them under the hood close to a 200 degree engine... lol



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Re: running batteries inside mobile safely?

Post by MUDDY DUCK » Friday, 23 October 2009, 7:28 AM

On my Grand cherokee I put a snorkel on it , which gets rid of the the stock air cleaner box ,and gives you room for a second battery ...Sealed batteries like optimas can be mounted inside the vehicle in any position without the problems previously mentioned .



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Re: running batteries inside mobile safely?

Post by 'Doc » Friday, 23 October 2009, 14:12 PM

The problem with having any lead/acid battery inside something is the fumes given off by that battery type. They are acidic and are a problem with things around it. Containing those type batteries, and venting them (forced air if around people) is a very, very good idea. Then there are the other things. Don't let them tip over, the acidic stuff will spill and that's not good. A little bit of room between a battery and anything around it is sort of good too, keeps things from shorting, etc. You see where that's all going??
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Re: running batteries inside mobile safely?

Post by TheCBDoctor » Friday, 23 October 2009, 15:21 PM

Hi SwampHog

Do not light a cigarette inside a vehicle that has a lead acid battery. The byproduct is Hydrogen gas. I know that some foreign cars, like Volkswagen, used to keep the battery under the rear seat. I never thought that was a good idea. Putting a bank of lead acid batteries inside a jeep safely will be a challenge.

If you get hit in a rear end collision you can be burned by the acid or ignite the Hydrogen gas. Just something to keep in mind.

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Re: running batteries inside mobile safely?

Post by Alien Abductor » Friday, 23 October 2009, 15:23 PM

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Re: running batteries inside mobile safely?

Post by Rider On The Storm » Friday, 13 November 2009, 18:19 PM

I once saw a Silverado with two 100 amp alternators, going to the stock battery under the hood, then from that battery, two zero gauge conductors running to 4 optima yellow tops in series under the backseat. Although more expensive, optimas are safe to be in an enclosed space with and the only brand I would go with for a situation like that.

He used it to run a 2 pill driving an 8 pill.

Although I dont know if the second alternator is necessary, I wouldnt go without it, because if all 5 of those batterys are fairly low, thats a huge load for one alternator.

Hope that helps



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Re: running batteries inside mobile safely?

Post by Tugboat » Monday, 01 February 2010, 13:44 PM

There is a battery box used in the RV market that has a outside venting system. I have this box installed in my Jeep XJ for the second battery.


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Re: running batteries inside mobile safely?

Post by shooter » Tuesday, 02 February 2010, 10:57 AM

think about this , corvettes and volkswagons had the battery inside the passenger compartment for years with no problems . they were not vented to the outside . i had a few very high power car audio systems with multiple batteries in car " inside battery boxes " never a problem . most batteries are sealed today anyway . as for exploding gases , i cant imagine enough gas coming out of a battery to case an explosion .

quality batteries , boxes and safe wiring and fusing . no problems .

good luck



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Re: running batteries inside mobile safely?

Post by Animal » Tuesday, 02 February 2010, 13:07 PM

If you have ever seen one explode, you would think differently. I had one explode on me one time. I was not badly hurt, but was covered with acid and hit with a few pieces of the case. Just my two cents, but I would never want a lead acid battery in the cab with me. An Optima dry cell battery might be a safer consideration for inside installation.
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Re: running batteries inside mobile safely?

Post by ogdoa » Saturday, 26 June 2010, 23:37 PM

shooter wrote:think about this , corvettes and volkswagons had the battery inside the passenger compartment for years with no problems . they were not vented to the outside . i had a few very high power car audio systems with multiple batteries in car " inside battery boxes " never a problem . most batteries are sealed today anyway . as for exploding gases , i cant imagine enough gas coming out of a battery to case an explosion .

quality batteries , boxes and safe wiring and fusing . no problems .

good luck
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Re: running batteries inside mobile safely?

Post by 420Snowman » Thursday, 01 July 2010, 12:47 PM

When a battery explodes under the hood, it will push the hood up like an inverted V dipole, you dont want that to happen 3 feet behind your head!! Optima wo8uld be your best bet, but contrary to popular belief they TOO have vents on the batteries themselves to vent out gasses. The optima is a "gel cell" battery and thats why they can be mounted in any position, it doesnt mean they dont have a vent on them, if batteries did not have vents, they would build up pressure and cause major problems right away. Depending on how much fabrication you want to do, you can cut a hole in the floorboard and weld hinges to it, weld a steel box under the jeep and keep the second battery there, if space under the hood is an issue. I had a buddy who did this to store his big tow straps.....

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Re: running batteries inside mobile safely?

Post by 'Doc » Friday, 02 July 2010, 6:35 AM

A quick-n-dirty recommendation is to 'contain' and 'vent' those batteries. That's not a bad idea even with those 'sealed' batteries. They may not produce any gases but even a little bit of those kinds of gases are bad news to health, let alone just property.
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Re: running batteries inside mobile safely?

Post by 420Snowman » Friday, 02 July 2010, 7:27 AM

Agree with Doc, they DO give off some gases, just because they are "gel cell" technology, doesnt mean they dont produce harmful gasses. I worked for a company for 5 years that was a wholesale distributor for Optima, they made us to go ALL the boring classes!!!

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Re: running batteries inside mobile safely?

Post by executioner » Thursday, 05 August 2010, 14:06 PM

420Snowman wrote:Agree with Doc, they DO give off some gases, just because they are "gel cell" technology, doesnt mean they dont produce harmful gasses. I worked for a company for 5 years that was a wholesale distributor for Optima, they made us to go ALL the boring classes!!!

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Did any of them classes talk about how the vents work on them gel cell Optimas ?
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Re: running batteries inside mobile safely?

Post by heavyD » Thursday, 05 August 2010, 14:46 PM

All gel cell batteries to have vents... they recycle the hydrogen and oxygen inside when charging. When they are over charged they vent just like the oldies. I wouldn't trust that the alternator is not pushing that battery to that threshhold as far a putting them in a sealed box. I do feel comfortable running gel cells in the cab. The army version of the Humvee has the battery compartment under the seat. They run mostly gel cells now but this is relitively new though. 10 years ago they were lead acid and still under the drivers seat.


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Re: running batteries inside mobile safely?

Post by smooth16 » Saturday, 14 August 2010, 21:27 PM

summit racing has some great battery boxes.



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Re: running batteries inside mobile safely?

Post by lucas » Tuesday, 26 October 2010, 10:17 AM

TheCBDoctor wrote:Hi SwampHog

Do not light a cigarette inside a vehicle that has a lead acid battery. The byproduct is Hydrogen gas. I know that some foreign cars, like Volkswagen, used to keep the battery under the rear seat. I never thought that was a good idea. Putting a bank of lead acid batteries inside a jeep safely will be a challenge.

If you get hit in a rear end collision you can be burned by the acid or ignite the Hydrogen gas. Just something to keep in mind.

Respectfully,
Funny you said that. because there is still one company still installing them under the back seats, Buick, when me and my uncle went to look under the hood of his Lasabre for the battery there was nothing, so we looked in the trunk, still nothing. Looked under the back seat and there it was, battery and engine fuse box. All that was keeping the gases from the battery from entering the car was a single 1/4 inch tube from the top of the battery through the floor..


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Re: running batteries inside mobile safely?

Post by 'Doc » Tuesday, 26 October 2010, 13:27 PM

I'm finding out that there are a lot of the newer cars with the battery 'inside' of them rather than under the hood. Those batteries are typically the AGM type, or 'glass-mat' thingys. They do less venting than most batteries. (My 'HHR' battery is mounted where the spare is, under the back floor board. Can't say I'm thrilled with it, but where the #3// else could you put it?)
There are some precautions that just make good sense. I would think taking those precautions to the 'over-kill' limits is certainly better than no precautions at all. Suit yourself...
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Re: running batteries inside mobile safely?

Post by Sheriff Bart » Wednesday, 27 October 2010, 9:41 AM

The best idea is the battery box that vents. Why take any chance on inhaling any toxic fumes ? Research finding a box to encase your cells that will allow you to vent the fumes outside the passenger compartment.


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Re: running batteries inside mobile safely?

Post by maters » Saturday, 16 April 2011, 19:25 PM

In the 80's I had an old Plymouth that mounted the battery in the trunk to gain traction. Battery let loose while driving it and the best way an former marine can describe it, was a grenade going off behind me and blew the trunk lid open.
I run optimas in an aluminum box in the suv and still get scared.



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Re: running batteries inside mobile safely?

Post by Hondarider » Sunday, 24 April 2011, 16:14 PM

maters wrote:In the 80's I had an old Plymouth that mounted the battery in the trunk to gain traction. Battery let loose while driving it and the best way an former marine can describe it, was a grenade going off behind me and blew the trunk lid open.
I run optimas in an aluminum box in the suv and still get scared.
Lol would one battery really make you gain traction? I wouldn't think that one battery would make a difference. Maybe 10...
Have a good one.


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Re: running batteries inside mobile safely?

Post by maters » Sunday, 24 April 2011, 22:15 PM

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