Groups > sci.electronics.components > #6191

Re: Li-Polymer Batteries

From	rickman <gnuarm@gmail.com>
Newsgroups	sci.electronics.components, sci.electronics.design
Subject	Re: Li-Polymer Batteries
Date	2017-10-18 16:42 -0400
Organization	A noiseless patient Spider
Message-ID	<os8eb5$p05$1@dont-email.me> (permalink)
References	(4 earlier) <os4jk6$1bl7$1@gioia.aioe.org> <os4lda$4hi$1@dont-email.me> <os4ls7$1h6c$1@gioia.aioe.org> <os4m9d$971$1@dont-email.me> <os846o$v0c$1@news.datemas.de>

Cross-posted to 2 groups.

Show all headers | View raw

Jan Panteltje wrote on 10/18/2017 1:49 PM:
> On a sunny day (Tue, 17 Oct 2017 06:33:15 -0400) it happened rickman
> <gnuarm@gmail.com> wrote in <os4m9d$971$1@dont-email.me>:
>
>>>> 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.
>
> PS
> There was just an interesting talk on the local ham net repeater 'daily minutes'
> some of the fire brigade over here went to the Tesla factory to get instructions how to extinguish burning electric cars.
> The answer (from Tesla) was:
>  'Use Water, lost of it, at least two firecars full'.
> So 'roll' was the right answer.
> An other suggestion that struck me was:
>  'Put a smoke alarm above your charge setup'.

"Roll" is not the right answer.  First, not every kayker knows how to roll. 
We all soon learn how to do the half roll adequately, but getting out of 
your boat is only a last gasp not at all unlike bailing from an airplane. 
It's not something you do until all other options are exhausted.

The bottom line is people are getting all wound up about my idea of doing 
something to contain a battery fire rather than offering any useful advice. 
I've actually found some very interesting hose intended to be a cable or 
hose jacket which will tolerate the heat of a Lithium battery fire for some 
five minutes or more.  Looks like I can close the two ends and have a fairly 
effective fire container without much cost, weight or size.

The other current option is to use a mat of silica or ceramic fibers (like 
fiberglass, but tolerates higher temperatures.  This would form an 
insulating blanket that can be shaped into a pocket with one end closed 
after inserting the battery.  Again, this will be lightweight, cost 
effective and small enough to put in the case I plan to use.

So where is the problem?

What I was hoping for was info on how well the various boards to use with 
the battery would work, but obviously no one here has bought any of them.

I will have parts in a couple more weeks.  I will need to play with the LEDs 
to see just how much power they use and how many LEDs I'll need to be bright 
enough.  There are very bright white LEDs but nav light need to be red and 
green.  Seems the best way to go is to use RGB LEDs which will allow them to 
be any color desired.  But they are not as bright as white LEDs so I will 
test them and see how many are needed.

-- 

Rick C

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

Back to sci.electronics.components | Previous | Next — Previous in thread | Next in thread | Find similar

Thread

Li-Polymer Batteries rickman <gnuarm@gmail.com> - 2017-10-16 10:16 -0400
  Re: Li-Polymer Batteries Mark Storkamp <mstorkamp@yahoo.com> - 2017-10-16 12:47 -0500
    Re: Li-Polymer Batteries rickman <gnuarm@gmail.com> - 2017-10-16 20:49 -0400
  Re: Li-Polymer Batteries rickman <gnuarm@gmail.com> - 2017-10-17 01:30 -0400
    Re: Li-Polymer Batteries rickman <gnuarm@gmail.com> - 2017-10-17 02:28 -0400
    Re: Li-Polymer Batteries Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-10-17 08:13 +0000
      Re: Li-Polymer Batteries rickman <gnuarm@gmail.com> - 2017-10-17 05:21 -0400
        Re: Li-Polymer Batteries Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-10-17 09:47 +0000
          Re: Li-Polymer Batteries rickman <gnuarm@gmail.com> - 2017-10-17 06:18 -0400
            Re: Li-Polymer Batteries Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-10-17 10:26 +0000
              Re: Li-Polymer Batteries rickman <gnuarm@gmail.com> - 2017-10-17 06:33 -0400
                Re: Li-Polymer Batteries Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2017-10-17 15:31 +0000
                Re: Li-Polymer Batteries rickman <gnuarm@gmail.com> - 2017-10-17 16:52 -0400
                Re: Li-Polymer Batteries Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2017-10-18 07:12 +0000
                Re: Li-Polymer Batteries rickman <gnuarm@gmail.com> - 2017-10-18 04:58 -0400
                Re: Li-Polymer Batteries Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-10-18 09:29 +0000
                Re: Li-Polymer Batteries rickman <gnuarm@gmail.com> - 2017-10-17 16:53 -0400
                Re: Li-Polymer Batteries Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2017-10-18 07:12 +0000
                Re: Li-Polymer Batteries mike <ham789@netzero.net> - 2017-10-17 12:07 -0700
                Re: Li-Polymer Batteries rickman <gnuarm@gmail.com> - 2017-10-17 17:19 -0400
                Re: Li-Polymer Batteries mike <ham789@netzero.net> - 2017-10-17 20:03 -0700
                Re: Li-Polymer Batteries rickman <gnuarm@gmail.com> - 2017-10-17 23:36 -0400
                Re: Li-Polymer Batteries Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2017-10-18 17:49 +0000
                Re: Li-Polymer Batteries rickman <gnuarm@gmail.com> - 2017-10-18 16:42 -0400
                Re: Li-Polymer Batteries Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-10-19 09:11 +0000
                Re: Li-Polymer Batteries rickman <gnuarm@gmail.com> - 2017-10-19 10:53 -0400
                Re: Li-Polymer Batteries Jan Panteltje <pNa0nStpealmtje@yahoo.com> - 2017-10-19 15:22 +0000
                Re: Li-Polymer Batteries rickman <gnuarm@gmail.com> - 2017-10-19 12:18 -0400
                Re: Li-Polymer Batteries Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2017-10-19 16:47 +0000
                Re: Li-Polymer Batteries rickman <gnuarm@gmail.com> - 2017-10-19 18:34 -0400
                Re: Li-Polymer Batteries Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2017-10-20 07:48 +0000
                Re: Li-Polymer Batteries rickman <gnuarm@gmail.com> - 2017-10-20 04:56 -0400
                Re: Li-Polymer Batteries Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2017-10-20 09:38 +0000
                Re: Li-Polymer Batteries rickman <gnuarm@gmail.com> - 2017-10-20 12:47 -0400
                Re: Li-Polymer Batteries Jan Panteltje <pNaOnStPeAlMtje@yahoo.com> - 2017-10-20 17:00 +0000
                Re: Li-Polymer Batteries rickman <gnuarm@gmail.com> - 2017-10-20 13:45 -0400
                Re: Li-Polymer Batteries krw@notreal.com - 2017-10-20 20:05 -0400
                Re: Li-Polymer Batteries rickman <gnuarm@gmail.com> - 2017-10-20 22:54 -0400
                Re: Li-Polymer Batteries krw@notreal.com - 2017-10-20 23:03 -0400
                Re: Li-Polymer Batteries rickman <gnuarm@gmail.com> - 2017-10-20 23:23 -0400
                Re: Li-Polymer Batteries krw@notreal.com - 2017-10-21 10:48 -0400
                Re: Li-Polymer Batteries rickman <gnuarm@gmail.com> - 2017-10-21 14:53 -0400
                Re: Li-Polymer Batteries krw@notreal.com - 2017-10-21 19:49 -0400
                Re: Li-Polymer Batteries Jasen Betts <jasen@xnet.co.nz> - 2017-10-27 22:47 +0000
                Re: Li-Polymer Batteries krw@notreal.com - 2017-10-27 22:25 -0400
                Re: Li-Polymer Batteries rickman <gnuarm@gmail.com> - 2017-10-19 12:51 -0400
            Re: Li-Polymer Batteries Tom Gardner <spamjunk@blueyonder.co.uk> - 2017-10-17 21:05 +0100
    Re: Li-Polymer Batteries TTman <kraken.sankey@gmail.com> - 2017-10-17 16:02 +0100
      Re: Li-Polymer Batteries rickman <gnuarm@gmail.com> - 2017-10-17 17:37 -0400

csiph-web