[Elecraft] [KX3] Lithium Battery Video

[Fred Jensen]

Yes, saw it too, really good reporting.  There was a very good [in the 
"real engineering facts" department] article some time ago, prior to the 
Samsung debacle.  It was aimed primarily at electric vehicle batteries, 
and touched a bit on large lithium-chemistry batteries for the home.  
Tesla's "Gigafactory" making PowerWalls and vehicle batteries is about 
45 km from us.

It might have been in Scientific American, sadly I don't remember.  But 
I do remember:

The energy density of lithium-chemistry batteries is extraordinarily 
high, and they have an almost infinitesimal internal resistance.  
Consequently, anything that shorts even part of the battery is going to 
result in extreme currents and resulting electrical and pyrotechnic 
displays.

The "secret" to safe lithium-chemistry batteries appears to be really 
good engineering and manufacturing quality control.  I've had one LiPoly 
RC battery I used with my KX1 go up in flames while I was calling CQ in 
the Spartan Sprint.  Fortunately, I was outside on the deck, it was 
externally connected via a pigtail, and I was able to fling it over the 
deck railing onto the gravel driveway.  It's provenance was difficult to 
determine, but I suspect somewhere way way to the west of NV.

If a lithium-chemistry battery ignites, water is not likely to put the 
fire out.  Cheap isn't always a good deal, and I'd never use one 
internal to the radio.

73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 2/7/2017 3:19 PM, Ken G Kopp wrote:
> Yes, the PBS / NOVA program was indeed informative ... and free of
> political BS 😁
>
> 73
>
> K0PP
>
> On Feb 6, 2017 8:26 PM, "k5dez02 at gmail.com [KX3]" <
> KX3-noreply at yahoogroups.com> wrote:
>
>>
>> For anyone who would like to know why Lithium batteries can be so
>> dangerous I ran across this interesting video from PBS Nova. If you have
>> not seen it yet take a look. It should be worth you time.
>>
>> Tim - K5DEZ
>>
>>
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