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Poisonous Battery Vapors?

 
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user9253



Joined: 28 Mar 2008
Posts: 1907
Location: Riley TWP Michigan

PostPosted: Tue Oct 04, 2016 6:20 pm    Post subject: Poisonous Battery Vapors? Reply with quote

Can lead acid batteries give off Hydrogen sulfide? If so, is it safe to have batteries located within an aircraft cabin? A mother and daughter might have been killed by battery vapors.
http://www.orlandosentinel.com/news/breaking-news/os-latifa-lincoln-dead-hydrogen-sulfide-20161004-story.html


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PostPosted: Wed Oct 05, 2016 8:34 am    Post subject: Poisonous Battery Vapors? Reply with quote

At 09:20 PM 10/4/2016, you wrote:
Quote:
--> AeroElectric-List message posted by: "user9253" <fransew(at)gmail.com>

Can lead acid batteries give off Hydrogen sulfide? If so, is it safe to have batteries located within an aircraft cabin? A mother and daughter might have been killed by battery vapors.
http://www.orlandosentinel.com/news/breaking-news/os-latifa-lincoln-dead-hydrogen-sulfide-20161004-story.html

--------

It would be interesting to see the final report
on any analysis generated by the hypothesis.

A term search for "hydrogen sulfide" on
batteryuniversity.com yielded three hits.

http://tinyurl.com/hv6n6bt

. . . it seems 'possible' that products
of battery distress could include h2s . . .

Our machines are usually fitted with ov
protection. The quantity of liquid in
the AGM battery is very limited. I suspect
that demonstrations designed to produce
H2S from a SVLA battery would be rather
bizarre . . . unlikely to ever happen
in vehicles . . . even less in airplanes.

Bob . . .


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user9253



Joined: 28 Mar 2008
Posts: 1907
Location: Riley TWP Michigan

PostPosted: Wed Oct 05, 2016 1:43 pm    Post subject: Re: Poisonous Battery Vapors? Reply with quote

Bob,
Below is a quote from http://batteryuniversity.com/learn/article/health_concerns that you referenced.
The danger of hydrogen sulfide is that the sense of smell acclimates to the gas and can not smell it anymore. That explains why the woman in the news article did not stop driving before she was incapacitated.
Quote:
Over-charging a lead acid battery can produce hydrogen sulfide. The gas is colorless, very poisonous, flammable and has the odor of rotten eggs. Hydrogen sulfide also occurs naturally during the breakdown of organic matter in swamps and sewers; it is present in volcanic gases, natural gas and some well waters. Being heavier than air, the gas accumulates at the bottom of poorly ventilated spaces. Although noticeable at first, the sense of smell deadens the sensation with time and potential victims may be unaware of its presence.
As a simple guideline, hydrogen sulfide becomes harmful to human life if the odor is noticeable. Turn off the charger, vent the facility and stay outside until the odor disappears.


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skywagon



Joined: 11 Feb 2006
Posts: 184

PostPosted: Wed Oct 05, 2016 5:10 pm    Post subject: Poisonous Battery Vapors? Reply with quote

We had this happen one time on a drive into Mexico for winter duck hunting.
We drove in friends old Suburban as it was pretty much bullet proof in the
Baja outback conditions.
I the way down, at night, I got the distinct smell of "burning french fries.
. .". That is how my nose translated the problem
Turned out the regulator had failed and the battery was being charged way
beyond its design max limits. Very hot and fluids coming out the vent caps,
etc.
It was the smell that tipped us off. Never dawned on us that the nasty
discharge would be dangerous other than eating up a battery box steel.
I don't recall the details now, but, we did a work around such that the
battery was not being charged for the remainder of the trip. Small Mexican
city got us running again as they had parts and pieces.

---


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Eric M. Jones



Joined: 10 Jan 2006
Posts: 565
Location: Massachusetts

PostPosted: Thu Oct 06, 2016 6:02 am    Post subject: Re: Poisonous Battery Vapors? Reply with quote

I wondered if the battery was located in the passenger compartment so I looked it up. https://www.youtube.com/watch?v=d6ZTeFT137Y#t=26.879952

Yes, and it takes three boys and a monkey to swap one. Amazing. When I saw this I was glad I didn't own one. But I still doubt the Cause Of Death pronouncement. Cars usually have enough ventilation to avoid the buildup of noxious vapors. Aircrafts probably do even more.

Recently around here a guy died because he was drunk and sleeping in his car, which went up to a zillion degrees in the sun. So I'd look for some COD that is more plausible.

"Wisdom is being aware of the obvious."


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PostPosted: Thu Oct 06, 2016 8:42 am    Post subject: Poisonous Battery Vapors? Reply with quote

Poor engineering, those Porsche guys...

CT
-----Mensagem original-----
De: owner-aeroelectric-list-server(at)matronics.com
[mailto:owner-aeroelectric-list-server(at)matronics.com] Em nome de Eric M.
Jones
Enviada: Thursday, October 6, 2016 3:03 PM
Para: aeroelectric-list(at)matronics.com
Assunto: Re: Poisonous Battery Vapors?


--> <emjones(at)charter.net>

I wondered if the battery was located in the passenger compartment so I
looked it up. https://www.youtube.com/watch?v=d6ZTeFT137Y#t=26.879952

Yes, and it takes three boys and a monkey to swap one. Amazing. When I saw
this I was glad I didn't own one. But I still doubt the Cause Of Death
pronouncement. Cars usually have enough ventilation to avoid the buildup of
noxious vapors. Aircrafts probably do even more.

Recently around here a guy died because he was drunk and sleeping in his
car, which went up to a zillion degrees in the sun. So I'd look for some COD
that is more plausible.

"Wisdom is being aware of the obvious."

--------
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge, MA 01550
(508) 764-2072
emjones(at)charter.net


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