How to extinguish a Li-ion battery fire

[kelemvor]

At this point, I think folks are deliberately confusing li-ion with lithium. AKA trolling...

 

[tursiops]

Fact: 30+ battery related fires on Airplanes each year.

Fact: 0 fatalities or Aircraft related crashes due to 30+ battery related fires on airplanes each year.

Conclusion: Conception fire Extremely Unlikely due to Li-ion battery fire.

As an example of your cherry-picking of facts: Li-Po batteries carried on airplanes are limited to 100 Wh, max of two batteries. The batteries for a single DPV -- we do not know if any were on the Conception -- are maybe 500-1800 Wh. The issue is the charging, not just the existence of the battery. Very few batteries, other than in cell phones, are being charged on an airplane. Ask Samsung Galaxy S7 owners about this. A DPV battery on charge overnight nearly burned down the Cadillac Motel in High Springs a few years ago, and the room occupant barely escaped with his life.

 

[tursiops]

At this point, I think folks are deliberately confusing li-ion with lithium. AKA trolling...

In addition to confusing currents with energy, and having no idea about the difference between releasing the energy slowly over hours versus nearly instantaneously in an explosion.

 

[IDNeon357]

As an example of your cherry-picking of facts: Li-Po batteries carried on airplanes are limited to 100 Wh, max of two batteries. The batteries for a single DPV -- we do not know if any were on the Conception -- are maybe 500-1800 Wh. The issue is the charging, not just the existence of the battery. Very few batteries, other than in cell phones, are being charged on an airplane. Ask Samsung Galaxy S7 owners about this. A DPV battery on charge overnight nearly burned down the Cadillac Motel in High Springs a few years ago, and the room occupant barely escaped with his life.

Now DPVs are involved?

Batteries for flashlights/phones.

That's what we are talking about.

How many S7 owners were killed or injured as a result of their phones blowing up in their pockets? Answer. None. No successful lawsuits either.

Why? Because they just don't contain the amount of energy you think, because I'm pretty sure you got the equation backwards, you have to divide the calories by 3600.

But it's irrelevant. We can just look at current regs and statistics to rule out Li-ion batteries as a likely culprit.

 

[dmaziuk]

Now DPVs are involved?

Batteries for flashlights/phones.

That's what we are talking about.

Nope. Phones no work in deep blue sea. Just because I happen to only have a couple of 2x18650 fleebay flashlights, it doesn't mean nobody brought a can light with a Tesla-size battery pack to that charging station. That we're talking about cellphones and eneloops is the assumption that makes the ass of u and me.

 

[IDNeon357]

Nope. Phones no work in deep blue sea. Just because I happen to only have a couple of 2x18650 fleebay flashlights, it doesn't mean nobody brought a can light with a Tesla-size battery pack to that charging station. That we're talking about cellphones and eneloops is the assumption that makes the ass of u and me.

Sure, but that might have been likely noted in a news article by now. Someone would have said, "Must have been that DPV battery."

The assumption I've made fits 99.95% of diveboats and the story as was originally stated.

 

[tursiops]

Batteries for flashlights/phones.

That's what we are talking about.

We don't know what batteries were on board nor what was being charged overnight nor the make/trustworthiness of the batteries and chargers. In addition to lights and phones, there were surely camera batteries, laptops, tablets, power banks, and possibly DPV batteries too.

Batteries for video recorders are often 98 W-h....to be less than the 100 W-h allowed on airplanes.
My most recent light (XTAR DF30 5800) uses a pack of three 18650 cells making up a battery that has 37.8 W-h.
A laptop battery (Dell XPS14) is typically 86 W-h.

The point about using Watt-hours is that it is the legal standard for flying on airplanes, not something made up by hobbyists or manufacturers. A 100 W-h rating means (approximately) 100 W for one hour, or 50 W for two hours, or 600 W for 10 minutes, or 6000 W for 1 minute, or 360,000 W for 1 s.....also called an explosion.

Some reading for you:
https://www.bixpower.com/Battery-Cell-Chemistry-Comparison-s/2392.htm
How to Find Watt Hour Rating of a Lithium Battery - Lion Technology
https://www.bixpower.com/category-s/1968.htm

 

[dmaziuk]

Someone would have said, "Must have been that DPV battery."

ITYM someone's lawyer would have said we're not prepared top make any statements at this junction.

 

[rjack321]

Now DPVs are involved?

Batteries for flashlights/phones.

That's what we are talking about.

How many S7 owners were killed or injured as a result of their phones blowing up in their pockets? Answer. None. No successful lawsuits either.

Why? Because they just don't contain the amount of energy you think, because I'm pretty sure you got the equation backwards, you have to divide the calories by 3600.

But it's irrelevant. We can just look at current regs and statistics to rule out Li-ion batteries as a likely culprit.

You seem to have a preferred narrative when nobody really knows. Unless you work for NTSB and have some unpublished knowledge of the Conception. Neverthless, if you have an S7 that slips down behind a couch cushion THEN overheats and combusts there is plenty of energy to start a tragedy.

 

[dmaziuk]

The point about using Watt-hours is that it is the legal standard for flying on airplanes, not something made up by hobbyists or manufacturers. A 100 W-h rating means means (approximately) 100 W for one hour, or 50 W for two hours, or 600 W for 10 minutes, or 6000 W for 1 minute, or 360,000 W for 1 s.....also called an explosion.

Gotta wonder how much a battery pack rated for 360KW spike discharge would cost...