2 batterys and 2propane tanks together stored in tongue box

[ROBERT ONEILL]

I didn't read the whole post but propane tanks have a safety relief valve that releases propane anytime the internal tank pressure gets above a set amount. The pressure in the tank goes up when heated even just the sun shining on it or the box that it is in. A spark from a lose wire, static electricity, or a switch can cause it to ignite and it goes BOOM and that's it. I have watched a propane tank vent itself for over 1 hour as it heated up more in the sun. Propane covers are opened on the bottom because propane is heavier that air and falls to the ground. Don't put any electrical in the same box as propane. The lead acid batteries in a box themselves have the same potential to explode because of the off gassing of when charging or heavy use. If you see corrosion on your battery terminals, that is caused by the off gassing and that is why battery boxes have vents also. One spark in either case can cause an explosion.

watch this on the tube

https://www.youtube.com/watch?v=5-nO...nnel=MadDmitry

Not sure if you could call that a ghetto blaster or not.......

Sounds like you have a nice project you are doing.

[Joe MacDonald]

guy's civility is a big plus, everyone has their own ideas, and while we may not like someone else's running them down is impolite. Everyone has a different comfort level with the things they do, if not we would all be clones.

think about this for a minute;
early cars were battery, because the battery companies had a successful campaign advertising about the safety of driving something that depended on explosions.
Fuel operated cars took over because of fear of electrical fires/explosions. and acid burns.

who was right? both, and both were also wrong, because they used their own agenda rather than science.

in a propane or natural gas powered vehicle, you have multiple possibilities of fuel leaks and sparks, yet they are perfectly legal
Hmmmmn.................................

Joe

[Markz]

I did it, but built in a firewall between the LP and batteries. Be sure to mount the regulator outside of your box.

[JoelInTexas]

^Very, very nice, Markz!

That's some superb workmanship!

[Markz]

Originally Posted by JoelInTexas

^Very, very nice, Markz!

That's some superb workmanship!

Thanks buddy

[ShelbyM]

What, no Youtube video promotion? You are missing out on $! Seriously, that looks interesting enough for its own thread.

[Casita Greg]

Originally Posted by yogavnture

did u bother to go look at you tube video I mentioned above? it was posted over a year ago. they are doing same idea as mine. not one comment about explosion. and lots of people saying they gonna do it too. shouldn't they be warned??

Just my opinion, fwiw, but I don't put any stock in most of anything posted on YouTube. The majority of YouTube vids are total crap, and many of them are either worthless, wrong and give useless, and at times dangerous, advice. Just because you can create and post a video is not any assurance that you are qualified or even know what you're talking about. Caveat Emptor.

[Markz]

Originally Posted by Casita Greg

Just my opinion, fwiw, but I don't put any stock in most of anything posted on YouTube. The majority of YouTube vids are total crap, and many of them are either worthless, wrong and give useless, and at times dangerous, advice. Just because you can create and post a video is not any assurance that you are qualified or even know what you're talking about. Caveat Emptor.

Agreed, Both sides are sealed from the other when hatch is closed. LP side is vented heavily on bottom with a couple on top.

Additionally, the LP regulator is located outside of the box for venting far from the sealed LI batteries which do not vent gas. The batteries were. Chosen for their robustness. These are the type used in portable xray machines in hospitals, which means they are designed to be safe around oxygen, despite being in a separate sealed container. This is the thread covering the build.
https://www.fiberglassrv.com/forums/...ad.php?t=92750

[Markz]

Firewalls help to prevent fires.

[John in Santa Cruz]

yeah, LFP batteries are much safer than any form of lead-acid, and they aren't prone to fires like Li Ion batteries either.

[Markz]

Originally Posted by John in Santa Cruz

yeah, LFP batteries are much safer than any form of lead-acid, and they aren't prone to fires like Li Ion batteries either.

True, the LiFePO4 batteries I used have the edge over lithium ion, both in terms of cycle life (they lasts 4-5x longer), and safety. This is a key advantage because lithium ion batteries can overheat and even catch fire, while LiFePO4 does not.

Combine that with isolating the electrical side from the flammable side, proper wiring, proper plumbing, insulation and sufficient venting means that your set-up should be reliable, long lasting and safe.

[Travellers]

Nucamp put our dual 6 volt AGM’s under the bed in a sealed vented area. Just behind the axle so actually pivots a small amount of weight off the hitch. Hitch weight is a concern for us as we need to keep it under the 350 pound weight limit of our Tesla tow vehicle. Might be an option for you if you are concerned about hitch weight.

Cheers.