Groups > sci.electronics.components > #6173

Re: Li-Polymer Batteries

From	rickman <gnuarm@gmail.com>
Newsgroups	sci.electronics.components, sci.electronics.design
Subject	Re: Li-Polymer Batteries
Date	2017-10-17 06:18 -0400
Organization	A noiseless patient Spider
Message-ID	<os4lda$4hi$1@dont-email.me> (permalink)
References	<os2f0c$8t0$1@dont-email.me> <os44i7$p0f$1@dont-email.me> <os4e43$11sp$1@gioia.aioe.org> <os4i2d$cgp$1@dont-email.me> <os4jk6$1bl7$1@gioia.aioe.org>

Cross-posted to 2 groups.

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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@gmail.com> wrote in <os4i2d$cgp$1@dont-email.me>:
>
>> Jan Panteltje wrote on 10/17/2017 4:13 AM:
>>> On a sunny day (Tue, 17 Oct 2017 01:30:45 -0400) it happened rickman
>>> <gnuarm@gmail.com> wrote in <os44i7$p0f$1@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

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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

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