I rather have someone who learns the hard way and posts about it, so everyone 
else who cares can avoid the mistakes he made, than someone who stays away from 
it all because it sounds too dangerous.
BTW, this will not count as a Tesla fire, it is a bunch of cells in an old 
buggy, nobody who watches the whole video will see this as Tesla fire, despite 
the title of the Youtube posting to get attention and use the familiar name….

I applaud him for being honest enough to admit the mistakes he made and show 
the consequences.
Also showing how, despite the battery fire, they managed to contain it to a 
damaged buggy and some scorch marks, no burned down buildings or loss of life 
and limb. Spectacular fireworks yes. Scary moments, certainly. Having a long, 
serious, conversation with the property owner – expected. But they 
(inadvertently) did a safety demonstration of what to do and what not, when 
encountering this type of (battery fire) situation. Great video and a great 
learning experience. 

I hope he continues with what he is already doing, with the increased knowledge.
Cor.

Sent from Mail for Windows 10

From: - - via EV
Sent: Tuesday, December 4, 2018 10:51 AM
To: Electric Vehicle Discussion List
Cc: - -
Subject: Re: [EVDL] Tesla battery cells (no BMS) burst into flame...

I've watched some of the Rich Rebuilds videos.  I wouldn't characterize his 
style as being overly concerned with subtlety, care, or safety.

Some of the more scary points of the videos I watched:

  -  Disassembly of the car involving a sledge hammer.
  -  Dropping the pack to replace the contactors.  Reassembly consisted of 
lowering the car on the lift down to the pack, without checking fine alignment. 
 Of course, it wasn't aligned right, causing coolant to leak all over the 
floor, and who knows what other damage.

I would actually like to have more people taking apart their Tesla, and 
learning how they work to help expand the knowledge base, but I've put those 
videos on my list of "what not to do".

Unfortunately, this adds to the "another Tesla caught fire" swirl.

Mike

> On December 4, 2018 at 1:00 PM Damon Henry via EV <ev@lists.evdl.org> wrote:
> 
> 
> I've never used a BMS on any of my setups.  It's true that this presents a 
> risk, but knowing your battery chemistry and charging parameters can go a 
> long way...  I have exploded batteries, but not in a way that a BMS would 
> detect.  I did it the old fashioned way... ignite the hydrogen 😊
> 
> Damon
> ________________________________
> From: EV <ev-boun...@lists.evdl.org> on behalf of Matthew Quitter via EV 
> <ev@lists.evdl.org>
> Sent: Tuesday, December 4, 2018 9:30 AM
> To: Electric Vehicle Discussion List
> Cc: Matthew Quitter
> Subject: Re: [EVDL] Tesla battery cells (no BMS) burst into flame...
> 
> I still don’t know what actually caused the fault.
> 
> From what I watched on the video and previous ones on that project they’re 
> still in the preliminary planning stages.  It appears the pack was not 
> connected to anything, just placed in the car. Is that correct?
> 
> Which would suggest it spontaneously failed - something I’ve never heard of 
> and tell customers never happens. Worrying as I have 10 Tesla Model S modules 
> sitting waiting to go into a couple projects!
> 
> Perhaps there was a defect in the module? Or it was removed from its plastic 
> casing and rested against something conductive?!
> 
> I would like to know what actually caused the initial failure before thermal 
> runaway.
> 
> Matthew
> 
> London Electric Cars
> 
> 
> > On 4 Dec 2018, at 17:15, EVDL Administrator via EV <ev@lists.evdl.org> 
> > wrote:
> >
> > Not that I want to start an argument, but IMO those folks who say "I don't
> > need no stinkin' BMS!" should be required to watch the hot action part of
> > that video clip at least once -- just so they give it a little more thought.
> >
> > The "live ammo" question from the firefighters is telling.  It DID look and
> > sound like that.  There's a spectacular amount of energy in those little
> > lithium cells, and it can do unsettling things when it's released all at
> > once.
> >
> > David Roden - Akron, Ohio, USA
> > EVDL Administrator
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