[Arm-netbook] laptop battery lessons...

Russell Hyer russell.hyer at gmail.com
Sat Dec 10 20:05:22 GMT 2016


I wonder if Vauxhall (UK's division of General Motors (or these days,
general unexplained electrical fires...)) has any lessons for
electrical wiring in computers. True, cars aren't exactly computers.
But these days they're all wired like a computer and contain several
just behind the dash. (And also, it's true that Vauxhall hasn't really
released much info, but it's still something to watch, but perhaps it
only occurs if / when companies are cutting corners to save a buck and
General Motors is generally a company to which that way of working


On 8 December 2016 at 08:44, Denis 'GNUtoo' Carikli <GNUtoo at no-log.org> wrote:
> On Tue, 6 Dec 2016 19:01:47 +0000
> Luke Kenneth Casson Leighton <lkcl at lkcl.net> wrote:
>> https://tech.slashdot.org/story/16/12/05/2032203/engineers-explain-why-the-galaxy-note-7-caught-fire#comments
>> whoops.  *sigh*.... so i'll be increasing the laptop's height by 1mm.
>> argh.  that's a big redesign...
> The root of the article is a blog post[1] by a company specialized in
> finding and fixing such issues, where they analyzed the issue by
> buying and taking apart a Galaxy Note 7.
> The article also heavily try to promote the services that this company offers.
> The information was then picked by a review magazine that wrote a
> journalistic article[2] with that information.
> The journalistic article was then picked by slashdot.
> It would probably be wiser to ask battery experts before taking any
> decision, since:
> - That company tried to promote their services.
> - They don't point to documentation or information on the margin they
>   refer to.
> - The battery technology is probably different on the EOMA laptop.
> - The casing is probably different too.
> - That laptop will probably be used for a time that is way longer than
>   the average use time for consumer smartphones.
> - The average customers for common smartphones don't mess with them,
>   open the device, access the PCB, etc...
> What if, for instance:
> - You need more space than the 10% figure they mentioned? You probably
>   don't want to redesign it twice, and you probably don't want to make
>   unsafe laptop either, especially because they will probably be used
>   for a very long time by people messing with them.
> - You don't need to redesign the laptop because the problem doesn't
>   apply it.
> References:
> -----------
> [1]https://www.instrumental.ai/blog/2016/12/1/aggressive-design-caused-samsung-galaxy-note-7-battery-explosions
> [2]http://www.digitaltrends.com/mobile/instrumental-galaxy-note-7-teardown-news/
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