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Samsung temporarily halts production of Galaxy Note 7

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Re: Samsung temporarily halts production of Galaxy Note 7

#3
The incidents involving phones that were sleeping and not having the batteries being actively charged seem to indicate some major design issue.

To battery experts: Is this a one-off design and/or manufacturing error or are we reaching some limits to what we can do with current lithium battery technology with respect to Ah rating, size, weight, quick charging ability, heat generated with fan-less dissipation, etc.? In other words, is it just a matter of time that other phone manufacturers would hit such issues too?

Re: Samsung temporarily halts production of Galaxy Note 7

#4

The incidents involving phones that were sleeping and not having the batteries being actively charged seem to indicate some major design issue. To battery experts: Is this a one-off design and/or manufacturing error or are we reaching some limits to what we can do with current lithium battery technology with respect to Ah rating, size, weight, quick charging ability, heat generated with fan-less dissipation, etc.? In…

This is certainly not the first such case and it's unlikely to be the last. I recall Sony having numerous recalls related to similar issues.

It's the nature of dense energy storage media to run into problems if the energy is allowed to be released too quickly, but the characteristics of Li-ion do make it more conducive to cause these type of incidents. Battery university has a nice explanation of the typical causes here:

http://batteryuniversity.com/learn/article/safety_concerns_w...

Also, "Charge and Catch Fire: A History of Exploding Batteries and Other Product Recalls":

https://www.thestreet.com/slideshow/13728952/1/samsung-s-bat...

Re: Samsung temporarily halts production of Galaxy Note 7

#6
post #4

The incidents involving phones that were sleeping and not having the batteries being actively charged seem to indicate some major design issue. To battery experts: Is this a one-off design and/or manufacturing error or are we reaching some limits to what we can do with current lithium battery technology with respect to Ah rating, size, weight, quick charging ability, heat generated with fan-less dissipation, etc.? In…

This is certainly not the first such case and it's unlikely to be the last. I recall Sony having numerous recalls related to similar issues. It's the nature of dense energy storage media to run into problems if the energy is allowed to be released too quickly, but the characteristics of Li-ion do make it more conducive to cause these type of incidents. Battery university has a nice explanation of the typical causes h…

>if the energy is allowed to be released too quickly

Wasn't this the problem? That the kernel was drawing too much voltage from the battery, or something like that I read.

Re: Samsung temporarily halts production of Galaxy Note 7

#10
post #4

Earlier quoted context omitted.

This is certainly not the first such case and it's unlikely to be the last. I recall Sony having numerous recalls related to similar issues. It's the nature of dense energy storage media to run into problems if the energy is allowed to be released too quickly, but the characteristics of Li-ion do make it more conducive to cause these type of incidents. Battery university has a nice explanation of the typical causes h…

>if the energy is allowed to be released too quickly Wasn't this the problem? That the kernel was drawing too much voltage from the battery, or something like that I read.

Lithium ion batteries can supply a lot of power, especially relative to what a cell phone uses. I would be very surprised if the batteries were failing because of too much power draw, rather than a combination of faulty manufacturing and overheating.
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