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 Post subject: When Batteries EXPLODE!
PostPosted: Mon Dec 17, 2012 6:01 am 
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So, I was sleeping with my head about a foot away from a battery I was charging for a few nights in a row, and I've just come to the conclusion after reading about exploding batteries, that may not be something I'll be doing any more. I'm wondering what kinds of explosions are possible from different types of batteries and what general safety habits to follow to either try and keep explosions from happening or at least keep them from causing a fire or blowing bits of myself off. Like my head.

For instance a sealed lead acid battery that used to be in one of those milions candle-power flashlights.
Or even, a small 9-volt alkaline. I have no idea if one of these exploding could cause any damage.
Or a car battery..

How big can different types of batteries explode and is there a place I can read about how to avoid explosions? I heard to beware of Lithium Ions.
(Actually, I'm gradually finding good safety tips in this forum)

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 Post subject: Re: When Batteries EXPLODE!
PostPosted: Mon Dec 17, 2012 11:24 pm 
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The biggest battery I have had explode was a 12v 4Ah lead acid, it sounded like a shotgun. The plastic case spit into about 6 pieces and the acid formed a cloud for a few seconds, I was covered in it. I was about 6 to 8 feet away when it happened.

If it had been at the side of my head, no doubt I would have burst an ear drum, suffered cuts and possibly lost my sight.

Batteries should always be treated with the utmost care.

An AA cell ruptured with a pop scattering carbon and zinc fragments across the room, not as violent as a lead acid but enough to take an eye out.

Both cases were my own fault, the lead acid had corroded terminals which slightly sparked on occasion but this was enough to light the hydrogen being given off by the battery. The Zinc carbon was being charged too quickly, yes you can charge zinc carbon batteries with a Bedini although in my experience you only get about 25% - 30% capacity.


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 Post subject: Re: When Batteries EXPLODE!
PostPosted: Tue Dec 18, 2012 12:33 am 
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Covered in battery acid? Not good. :shock:
I hope you got to a sink and washed it off quickly. And I hope it didn't cause any bad health effects for you. That's nasty stuff from what I hear. But I actually may have heard wrong. Certainly though, shotgun-like blasts, battery acid sprays and eyes being put out will all be things I'm looking to avoid. I'll definitely remember that when messing with lead-acid batteries.

I've never experienced a battery explosion, but I once heard of someone storing a large lead acid in his basement, and it exploded and, if I remember right, destroyed everything within 6 feet, including part of the stairs leading down to the basement.

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 Post subject: Re: When Batteries EXPLODE!
PostPosted: Tue Dec 18, 2012 1:19 am 
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Make sure not to overcharge. When the battery is full, the electrolysis process will happen more. it convert the water to H2 and O2. A mix of both is unstable and prone to explosion.

If you can see the cell, you should notice tiny bubble forming from between the cell. When the battery is full, the bubble form faster.


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 Post subject: Re: When Batteries EXPLODE!
PostPosted: Tue Dec 18, 2012 11:23 pm 
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Yes with a lead acid it is a hydrogen explosion, luckily I had a shower right next to my workshop so no harm done although my cotton shorts went into holes when they were washed hehe.


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 Post subject: Re: When Batteries EXPLODE!
PostPosted: Wed Dec 19, 2012 5:01 am 
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I once puncture an inflated lithium ion battery from a cellphone. It explode and make a plasma fire as large as my body and make a hole in my pant and shirt. All that from about 5cc of gas.


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 Post subject: Re: When Batteries EXPLODE!
PostPosted: Wed Dec 19, 2012 8:30 pm 
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Glad you got out of that with no major injuries. My neighbor said his laptop exploded. I believe it was a lithium ion battery too. He said the optical disc drive literally launched out the front side of the laptop and landed across the room. I thought he might be exxagerating until I started hearing more reports about the lithium ions. I won't be trying to charge any of those soon.

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 Post subject: Re: When Batteries EXPLODE!
PostPosted: Thu Dec 20, 2012 1:35 am 
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superdude wrote:
Glad you got out of that with no major injuries. My neighbor said his laptop exploded. I believe it was a lithium ion battery too. He said the optical disc drive literally launched out the front side of the laptop and landed across the room. I thought he might be exxagerating until I started hearing more reports about the lithium ions. I won't be trying to charge any of those soon.
Thanks.

Yes, you should avoid charging lithium based because bedini charger produce more bubble than ordinary charger. This also means that dry battery or gel battery will die more quickly with pure bedini charger output. The reason why I always use partial bridge for charging.


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