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rickman
Guest

Mon Oct 16, 2017 4:16 pm   



I'm looking at buying these batteries for a test project and they ask the
buyer to choose between battery types 357090 & 357095. I can't find any
references anywhere that describe what these model numbers mean. Anyone know?

http://www.ebay.com/itm/201761814378

I've tried asking the vendor but they just keep telling me to read the
description. Any ideas of what these numbers mean?

--

Rick C

Viewed the eclipse at Wintercrest Farms,
on the centerline of totality since 1998

Mark Storkamp
Guest

Mon Oct 16, 2017 7:47 pm   



In article <os2f0c$8t0$1_at_dont-email.me>, rickman <gnuarm_at_gmail.com>
wrote:

Quote:
I'm looking at buying these batteries for a test project and they ask the
buyer to choose between battery types 357090 & 357095. I can't find any
references anywhere that describe what these model numbers mean. Anyone know?

http://www.ebay.com/itm/201761814378

I've tried asking the vendor but they just keep telling me to read the
description. Any ideas of what these numbers mean?


Looks like the outside dimensions, 3.5 x 70 x 90 vs 3.5 x 70 x 95.

--

rickman
Guest

Tue Oct 17, 2017 2:49 am   



Mark Storkamp wrote on 10/16/2017 1:47 PM:
Quote:
In article <os2f0c$8t0$1_at_dont-email.me>, rickman <gnuarm_at_gmail.com
wrote:

I'm looking at buying these batteries for a test project and they ask the
buyer to choose between battery types 357090 & 357095. I can't find any
references anywhere that describe what these model numbers mean. Anyone know?

http://www.ebay.com/itm/201761814378

I've tried asking the vendor but they just keep telling me to read the
description. Any ideas of what these numbers mean?

Looks like the outside dimensions, 3.5 x 70 x 90 vs 3.5 x 70 x 95.


Duh! Thanks. Now to figure out why they are a different size. Could that
be the protection circuit board? They say these cells include protection,
but maybe that is not entirely accurate?

--

Rick C

Viewed the eclipse at Wintercrest Farms,
on the centerline of totality since 1998

rickman
Guest

Tue Oct 17, 2017 7:30 am   



rickman wrote on 10/16/2017 10:16 AM:
Quote:
I'm looking at buying these batteries for a test project and they ask the
buyer to choose between battery types 357090 & 357095. I can't find any
references anywhere that describe what these model numbers mean. Anyone know?

http://www.ebay.com/itm/201761814378

I've tried asking the vendor but they just keep telling me to read the
description. Any ideas of what these numbers mean?


I got an answer to the question above.

One thing that concerns me about lithium cells is their nature to catch fire
and the way they are almost explosive when they do. I'm thinking of making
a box for them of aluminum sheet. This will contain a fire if a cell
ruptures, but not the heat. I don't have a lot of space to add insulation,
but I could add a layer of something that would absorb the heat at least on
the side that would be in contact with anything. I'm wondering what would
be a good insulating or heat absorbing layer. In the old days I would wrap
the box in an asbestos cloth, but I expect they aren't used any more.

I found some half inch thick Ceramic Fiber Blanket on eBay for $10. This
looks like it could help insulate a run away battery. But when I look at a
data sheet, I'm not sure it will keep the outer plastic case from melting
and/or catching fire. They give a temperature rise, but don't say how long
they allowed before taking the measurement. They cite ASTM Test Procedure
C-177, but I haven't dug that up yet to see how it is done.

What else would be an option? It should be cheap and available.

--

Rick C

Viewed the eclipse at Wintercrest Farms,
on the centerline of totality since 1998

rickman
Guest

Tue Oct 17, 2017 8:28 am   



rickman wrote on 10/17/2017 1:30 AM:
Quote:
rickman wrote on 10/16/2017 10:16 AM:
I'm looking at buying these batteries for a test project and they ask the
buyer to choose between battery types 357090 & 357095. I can't find any
references anywhere that describe what these model numbers mean. Anyone
know?

http://www.ebay.com/itm/201761814378

I've tried asking the vendor but they just keep telling me to read the
description. Any ideas of what these numbers mean?

I got an answer to the question above.

One thing that concerns me about lithium cells is their nature to catch fire
and the way they are almost explosive when they do. I'm thinking of making
a box for them of aluminum sheet. This will contain a fire if a cell
ruptures, but not the heat. I don't have a lot of space to add insulation,
but I could add a layer of something that would absorb the heat at least on
the side that would be in contact with anything. I'm wondering what would
be a good insulating or heat absorbing layer. In the old days I would wrap
the box in an asbestos cloth, but I expect they aren't used any more.

I found some half inch thick Ceramic Fiber Blanket on eBay for $10. This
looks like it could help insulate a run away battery. But when I look at a
data sheet, I'm not sure it will keep the outer plastic case from melting
and/or catching fire. They give a temperature rise, but don't say how long
they allowed before taking the measurement. They cite ASTM Test Procedure
C-177, but I haven't dug that up yet to see how it is done.

What else would be an option? It should be cheap and available.


This looks interesting and it would be easy to install. They say it will
tolerate 800C for 5 mins and a lithium battery in runaway would hit 600C.

http://www.ebay.com/itm/171761074567

--

Rick C

Viewed the eclipse at Wintercrest Farms,
on the centerline of totality since 1998

Jan Panteltje
Guest

Tue Oct 17, 2017 10:13 am   



On a sunny day (Tue, 17 Oct 2017 01:30:45 -0400) it happened rickman
<gnuarm_at_gmail.com> wrote in <os44i7$p0f$1_at_dont-email.me>:

Quote:
rickman wrote on 10/16/2017 10:16 AM:
I'm looking at buying these batteries for a test project and they ask the
buyer to choose between battery types 357090 & 357095. I can't find any
references anywhere that describe what these model numbers mean. Anyone know?

http://www.ebay.com/itm/201761814378


It has build in chips to protect it, very unlikely to cath fire if you use a decent charger chip.

rickman
Guest

Tue Oct 17, 2017 11:21 am   



Jan Panteltje wrote on 10/17/2017 4:13 AM:
Quote:
On a sunny day (Tue, 17 Oct 2017 01:30:45 -0400) it happened rickman
gnuarm_at_gmail.com> wrote in <os44i7$p0f$1_at_dont-email.me>:

rickman wrote on 10/16/2017 10:16 AM:
I'm looking at buying these batteries for a test project and they ask the
buyer to choose between battery types 357090 & 357095. I can't find any
references anywhere that describe what these model numbers mean. Anyone know?

http://www.ebay.com/itm/201761814378

It has build in chips to protect it, very unlikely to cath fire if you use a decent charger chip.


"Very unlikely" is fine when it is sitting on your desk. If that happens
you get an appropriate fire extinguisher and put it out or at least let it
burn and put out anything else it has ignited. If you are in a vehicle
where you have no means of escaping and no way to deal with the fire, you
are SOL. "Very unlikely" isn't good enough for me.

Also, I'm not convinced all of these units have protection. The two model
numbers would seem to indicate one is 5 mm longer than the other. I expect
this is exactly the size of the protection board, so one might have
protection and the other might not. It is not all that unusual for an eBay
listing to contain errors and complete lies^H^H^H^H^H alternate facts.

--

Rick C

Viewed the eclipse at Wintercrest Farms,
on the centerline of totality since 1998

Jan Panteltje
Guest

Tue Oct 17, 2017 11:47 am   



On a sunny day (Tue, 17 Oct 2017 05:21:15 -0400) it happened rickman
<gnuarm_at_gmail.com> wrote in <os4i2d$cgp$1_at_dont-email.me>:

Quote:
Jan Panteltje wrote on 10/17/2017 4:13 AM:
On a sunny day (Tue, 17 Oct 2017 01:30:45 -0400) it happened rickman
gnuarm_at_gmail.com> wrote in <os44i7$p0f$1_at_dont-email.me>:

rickman wrote on 10/16/2017 10:16 AM:
I'm looking at buying these batteries for a test project and they ask the
buyer to choose between battery types 357090 & 357095. I can't find any
references anywhere that describe what these model numbers mean. Anyone know?

http://www.ebay.com/itm/201761814378

It has build in chips to protect it, very unlikely to cath fire if you use a decent charger chip.

"Very unlikely" is fine when it is sitting on your desk. If that happens
you get an appropriate fire extinguisher and put it out or at least let it
burn and put out anything else it has ignited. If you are in a vehicle
where you have no means of escaping and no way to deal with the fire, you
are SOL. "Very unlikely" isn't good enough for me.


Na, wrap your nuclear plants in ..


Quote:
Also, I'm not convinced all of these units have protection. The two model
numbers would seem to indicate one is 5 mm longer than the other. I expect
this is exactly the size of the protection board, so one might have
protection and the other might not. It is not all that unusual for an eBay
listing to contain errors and complete lies^H^H^H^H^H alternate facts.


True, I only looked at the link, you can see the protection board,
I have some like that, but only 1000 mAh, marked 'Varta'.
From China nevertheless.

I have some without protection board too...more RC type single cell lipos.
And then I have the 3 cell ones, 30C ... no protection either.
Danger all around me,
Oh and the box with LiIon super powerfull forgot how many C.

Gotta run :-)

Think about it, you find lipos everywhere, even in those blutooth earplugs /
headsets for your cellphone, and happily plug it in your ear and wear it on your head.
Cars have gasoline, bad things can happen...
There is a mad dog president in control of the button, I would worry about that first.
Probabilities.

rickman
Guest

Tue Oct 17, 2017 12:18 pm   



Jan Panteltje wrote on 10/17/2017 5:47 AM:
Quote:
On a sunny day (Tue, 17 Oct 2017 05:21:15 -0400) it happened rickman
gnuarm_at_gmail.com> wrote in <os4i2d$cgp$1_at_dont-email.me>:

Jan Panteltje wrote on 10/17/2017 4:13 AM:
On a sunny day (Tue, 17 Oct 2017 01:30:45 -0400) it happened rickman
gnuarm_at_gmail.com> wrote in <os44i7$p0f$1_at_dont-email.me>:

rickman wrote on 10/16/2017 10:16 AM:
I'm looking at buying these batteries for a test project and they ask the
buyer to choose between battery types 357090 & 357095. I can't find any
references anywhere that describe what these model numbers mean. Anyone know?

http://www.ebay.com/itm/201761814378

It has build in chips to protect it, very unlikely to cath fire if you use a decent charger chip.

"Very unlikely" is fine when it is sitting on your desk. If that happens
you get an appropriate fire extinguisher and put it out or at least let it
burn and put out anything else it has ignited. If you are in a vehicle
where you have no means of escaping and no way to deal with the fire, you
are SOL. "Very unlikely" isn't good enough for me.

Na, wrap your nuclear plants in ..


Also, I'm not convinced all of these units have protection. The two model
numbers would seem to indicate one is 5 mm longer than the other. I expect
this is exactly the size of the protection board, so one might have
protection and the other might not. It is not all that unusual for an eBay
listing to contain errors and complete lies^H^H^H^H^H alternate facts.

True, I only looked at the link, you can see the protection board,
I have some like that, but only 1000 mAh, marked 'Varta'.
From China nevertheless.

I have some without protection board too...more RC type single cell lipos.
And then I have the 3 cell ones, 30C ... no protection either.
Danger all around me,
Oh and the box with LiIon super powerfull forgot how many C.

Gotta run :-)

Think about it, you find lipos everywhere, even in those blutooth earplugs /
headsets for your cellphone, and happily plug it in your ear and wear it on your head.
Cars have gasoline, bad things can happen...
There is a mad dog president in control of the button, I would worry about that first.
Probabilities.


I seem to recall a number of professional designs from companies who have
much reputation to loose which burst into flames.

So no, I don't have tons of confidence in Lithium batteries to the extent
that I want to strap one on my kayak with no physical protection against the
boat catching on fire.

--

Rick C

Viewed the eclipse at Wintercrest Farms,
on the centerline of totality since 1998

Jan Panteltje
Guest

Tue Oct 17, 2017 12:26 pm   



On a sunny day (Tue, 17 Oct 2017 06:18:09 -0400) it happened rickman
<gnuarm_at_gmail.com> wrote in <os4lda$4hi$1_at_dont-email.me>:

Quote:
Jan Panteltje wrote on 10/17/2017 5:47 AM:
On a sunny day (Tue, 17 Oct 2017 05:21:15 -0400) it happened rickman
gnuarm_at_gmail.com> wrote in <os4i2d$cgp$1_at_dont-email.me>:

Jan Panteltje wrote on 10/17/2017 4:13 AM:
On a sunny day (Tue, 17 Oct 2017 01:30:45 -0400) it happened rickman
gnuarm_at_gmail.com> wrote in <os44i7$p0f$1_at_dont-email.me>:

rickman wrote on 10/16/2017 10:16 AM:
I'm looking at buying these batteries for a test project and they ask the
buyer to choose between battery types 357090 & 357095. I can't find any
references anywhere that describe what these model numbers mean. Anyone know?

http://www.ebay.com/itm/201761814378

It has build in chips to protect it, very unlikely to cath fire if you use a decent charger chip.

"Very unlikely" is fine when it is sitting on your desk. If that happens
you get an appropriate fire extinguisher and put it out or at least let it
burn and put out anything else it has ignited. If you are in a vehicle
where you have no means of escaping and no way to deal with the fire, you
are SOL. "Very unlikely" isn't good enough for me.

Na, wrap your nuclear plants in ..


Also, I'm not convinced all of these units have protection. The two model
numbers would seem to indicate one is 5 mm longer than the other. I expect
this is exactly the size of the protection board, so one might have
protection and the other might not. It is not all that unusual for an eBay
listing to contain errors and complete lies^H^H^H^H^H alternate facts.

True, I only looked at the link, you can see the protection board,
I have some like that, but only 1000 mAh, marked 'Varta'.
From China nevertheless.

I have some without protection board too...more RC type single cell lipos.
And then I have the 3 cell ones, 30C ... no protection either.
Danger all around me,
Oh and the box with LiIon super powerfull forgot how many C.

Gotta run :-)

Think about it, you find lipos everywhere, even in those blutooth earplugs /
headsets for your cellphone, and happily plug it in your ear and wear it on your head.
Cars have gasoline, bad things can happen...
There is a mad dog president in control of the button, I would worry about that first.
Probabilities.

I seem to recall a number of professional designs from companies who have
much reputation to loose which burst into flames.


Was it not Liion?


Quote:

So no, I don't have tons of confidence in Lithium batteries to the extent
that I want to strap one on my kayak with no physical protection against the
boat catching on fire.


Well just roll.

rickman
Guest

Tue Oct 17, 2017 12:33 pm   



Jan Panteltje wrote on 10/17/2017 6:26 AM:
Quote:
On a sunny day (Tue, 17 Oct 2017 06:18:09 -0400) it happened rickman
gnuarm_at_gmail.com> wrote in <os4lda$4hi$1_at_dont-email.me>:

Jan Panteltje wrote on 10/17/2017 5:47 AM:
On a sunny day (Tue, 17 Oct 2017 05:21:15 -0400) it happened rickman
gnuarm_at_gmail.com> wrote in <os4i2d$cgp$1_at_dont-email.me>:

Jan Panteltje wrote on 10/17/2017 4:13 AM:
On a sunny day (Tue, 17 Oct 2017 01:30:45 -0400) it happened rickman
gnuarm_at_gmail.com> wrote in <os44i7$p0f$1_at_dont-email.me>:

rickman wrote on 10/16/2017 10:16 AM:
I'm looking at buying these batteries for a test project and they ask the
buyer to choose between battery types 357090 & 357095. I can't find any
references anywhere that describe what these model numbers mean. Anyone know?

http://www.ebay.com/itm/201761814378

It has build in chips to protect it, very unlikely to cath fire if you use a decent charger chip.

"Very unlikely" is fine when it is sitting on your desk. If that happens
you get an appropriate fire extinguisher and put it out or at least let it
burn and put out anything else it has ignited. If you are in a vehicle
where you have no means of escaping and no way to deal with the fire, you
are SOL. "Very unlikely" isn't good enough for me.

Na, wrap your nuclear plants in ..


Also, I'm not convinced all of these units have protection. The two model
numbers would seem to indicate one is 5 mm longer than the other. I expect
this is exactly the size of the protection board, so one might have
protection and the other might not. It is not all that unusual for an eBay
listing to contain errors and complete lies^H^H^H^H^H alternate facts.

True, I only looked at the link, you can see the protection board,
I have some like that, but only 1000 mAh, marked 'Varta'.
From China nevertheless.

I have some without protection board too...more RC type single cell lipos.
And then I have the 3 cell ones, 30C ... no protection either.
Danger all around me,
Oh and the box with LiIon super powerfull forgot how many C.

Gotta run :-)

Think about it, you find lipos everywhere, even in those blutooth earplugs /
headsets for your cellphone, and happily plug it in your ear and wear it on your head.
Cars have gasoline, bad things can happen...
There is a mad dog president in control of the button, I would worry about that first.
Probabilities.

I seem to recall a number of professional designs from companies who have
much reputation to loose which burst into flames.

Was it not Liion?



So no, I don't have tons of confidence in Lithium batteries to the extent
that I want to strap one on my kayak with no physical protection against the
boat catching on fire.

Well just roll.


I seem to recall Lithium doesn't do so well in contact with water.

--

Rick C

Viewed the eclipse at Wintercrest Farms,
on the centerline of totality since 1998

TTman
Guest

Tue Oct 17, 2017 5:02 pm   



On 17/10/2017 06:30, rickman wrote:
Quote:
rickman wrote on 10/16/2017 10:16 AM:
I'm looking at buying these batteries for a test project and they ask the
buyer to choose between battery types 357090 & 357095.  I can't find any
references anywhere that describe what these model numbers mean.
Anyone know?

http://www.ebay.com/itm/201761814378

I've tried asking the vendor but they just keep telling me to read the
description.  Any ideas of what these numbers mean?

SNIP
They say that the battery is fully protected internally... over voltage,
undervoltage and over current so should be perfectly safe....

---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus

Jan Panteltje
Guest

Tue Oct 17, 2017 5:31 pm   



On a sunny day (Tue, 17 Oct 2017 06:33:15 -0400) it happened rickman
<gnuarm_at_gmail.com> wrote in <os4m9d$971$1_at_dont-email.me>:

Quote:
I seem to recall a number of professional designs from companies who have
much reputation to loose which burst into flames.

Was it not Liion?



So no, I don't have tons of confidence in Lithium batteries to the extent
that I want to strap one on my kayak with no physical protection against the
boat catching on fire.

Well just roll.

I seem to recall Lithium doesn't do so well in contact with water.


Have not had any Li fires, so don't know, but youtube has the answer:
https://www.youtube.com/watch?v=vRKK6pliejs

So what can you do in a kayak? water proof bottle:
http://panteltje.com/pub/a_seaworthy_GPS_radiation_counter_IMG_4447.JPG
Remember I hold the Usenet patent on that Smile

mike
Guest

Tue Oct 17, 2017 9:07 pm   



On 10/17/2017 3:33 AM, rickman wrote:
Quote:
Jan Panteltje wrote on 10/17/2017 6:26 AM:
On a sunny day (Tue, 17 Oct 2017 06:18:09 -0400) it happened rickman
gnuarm_at_gmail.com> wrote in <os4lda$4hi$1_at_dont-email.me>:

Jan Panteltje wrote on 10/17/2017 5:47 AM:
On a sunny day (Tue, 17 Oct 2017 05:21:15 -0400) it happened rickman
gnuarm_at_gmail.com> wrote in <os4i2d$cgp$1_at_dont-email.me>:

Jan Panteltje wrote on 10/17/2017 4:13 AM:
On a sunny day (Tue, 17 Oct 2017 01:30:45 -0400) it happened rickman
gnuarm_at_gmail.com> wrote in <os44i7$p0f$1_at_dont-email.me>:

rickman wrote on 10/16/2017 10:16 AM:
I'm looking at buying these batteries for a test project and
they ask the
buyer to choose between battery types 357090 & 357095. I can't
find any
references anywhere that describe what these model numbers
mean. Anyone know?

http://www.ebay.com/itm/201761814378

It has build in chips to protect it, very unlikely to cath fire if
you use a decent charger chip.

"Very unlikely" is fine when it is sitting on your desk. If that
happens
you get an appropriate fire extinguisher and put it out or at least
let it
burn and put out anything else it has ignited. If you are in a
vehicle
where you have no means of escaping and no way to deal with the
fire, you
are SOL. "Very unlikely" isn't good enough for me.

Na, wrap your nuclear plants in ..


Also, I'm not convinced all of these units have protection. The
two model
numbers would seem to indicate one is 5 mm longer than the other.
I expect
this is exactly the size of the protection board, so one might have
protection and the other might not. It is not all that unusual for
an eBay
listing to contain errors and complete lies^H^H^H^H^H alternate facts.

True, I only looked at the link, you can see the protection board,
I have some like that, but only 1000 mAh, marked 'Varta'.
From China nevertheless.

I have some without protection board too...more RC type single cell
lipos.
And then I have the 3 cell ones, 30C ... no protection either.
Danger all around me,
Oh and the box with LiIon super powerfull forgot how many C.

Gotta run :-)

Think about it, you find lipos everywhere, even in those blutooth
earplugs /
headsets for your cellphone, and happily plug it in your ear and
wear it on your head.
Cars have gasoline, bad things can happen...
There is a mad dog president in control of the button, I would worry
about that first.
Probabilities.

I seem to recall a number of professional designs from companies who
have
much reputation to loose which burst into flames.

Was it not Liion?



So no, I don't have tons of confidence in Lithium batteries to the
extent
that I want to strap one on my kayak with no physical protection
against the
boat catching on fire.

Well just roll.

I seem to recall Lithium doesn't do so well in contact with water.

Interesting to see how far people will go to ignore the total system
and focus on one ill-conceived component.
The devil is in the details, and we have few.

Do the math.
How much energy is released in a battery fire?
If you insulate it, how hot will it get inside, since you've
guaranteed thermal runaway?
How much energy is released as heat if you discharge the battery
at maximum current allowed by your current limit strategy?
What does that do to the cell temperature if you insulate it?

How often are you gonna use this kayak device?
Can you not throw it overboard if it catches fire?
I submit that the release mechanism is far more likely
to jamb than the battery is to catch fire. ;-)

Given your paranoia, might a NiMH or Alkaline AA cell pack
be more cost effective and weigh less and take up less space
than your protection vault and fire suppression apparatus and floating
burn unit to treat the injured? Maybe you should have two burn
units just in case one of the doctors has a heart attack.

I surmise that there are some devices sold on EBAY that are made
from tested/fully compliant components and do what they say.
Problem is that you can't tell which.

Battery protection built into the battery won't solve your problem.
It's there as a backup to your own carefully crafted redundant
battery management system. I'm not saying you shouldn't have it.
I'm saying that you shouldn't rely on it.

The good news is that you are very much more likely to drown
than to catch fire.

Tom Gardner
Guest

Tue Oct 17, 2017 10:05 pm   



On 17/10/17 11:18, rickman wrote:
Quote:
Jan Panteltje wrote on 10/17/2017 5:47 AM:
On a sunny day (Tue, 17 Oct 2017 05:21:15 -0400) it happened rickman
gnuarm_at_gmail.com> wrote in <os4i2d$cgp$1_at_dont-email.me>:

Jan Panteltje wrote on 10/17/2017 4:13 AM:
On a sunny day (Tue, 17 Oct 2017 01:30:45 -0400) it happened rickman
gnuarm_at_gmail.com> wrote in <os44i7$p0f$1_at_dont-email.me>:

rickman wrote on 10/16/2017 10:16 AM:
I'm looking at buying these batteries for a test project and they ask the
buyer to choose between battery types 357090 & 357095. I can't find any
references anywhere that describe what these model numbers mean. Anyone
know?

http://www.ebay.com/itm/201761814378

It has build in chips to protect it, very unlikely to cath fire if you use a
decent charger chip.

"Very unlikely" is fine when it is sitting on your desk. If that happens
you get an appropriate fire extinguisher and put it out or at least let it
burn and put out anything else it has ignited. If you are in a vehicle
where you have no means of escaping and no way to deal with the fire, you
are SOL. "Very unlikely" isn't good enough for me.

Na, wrap your nuclear plants in ..


Also, I'm not convinced all of these units have protection. The two model
numbers would seem to indicate one is 5 mm longer than the other. I expect
this is exactly the size of the protection board, so one might have
protection and the other might not. It is not all that unusual for an eBay
listing to contain errors and complete lies^H^H^H^H^H alternate facts.

True, I only looked at the link, you can see the protection board,
I have some like that, but only 1000 mAh, marked 'Varta'.
From China nevertheless.

I have some without protection board too...more RC type single cell lipos.
And then I have the 3 cell ones, 30C ... no protection either.
Danger all around me,
Oh and the box with LiIon super powerfull forgot how many C.

Gotta run :-)

Think about it, you find lipos everywhere, even in those blutooth earplugs /
headsets for your cellphone, and happily plug it in your ear and wear it on
your head.
Cars have gasoline, bad things can happen...
There is a mad dog president in control of the button, I would worry about
that first.
Probabilities.

I seem to recall a number of professional designs from companies who have much
reputation to loose which burst into flames.

So no, I don't have tons of confidence in Lithium batteries to the extent that I
want to strap one on my kayak with no physical protection against the boat
catching on fire.


Here's the authoritative report of one example of an *aerospace*
qualified battery fire. The pilot was dead (ho ho) lucky the fire
only occurred after landing.

https://assets.publishing.service.gov.uk/media/59c8f175e5274a49c07f4704/AAIB_S3-2017_G-GSGS.pdf

The pictures in the report are informative.

Goto page 1, 2, 3, 4  Next

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