My current smartphone is a Samsung S6. I guess I should buy a pocket
fire extinguisher in case my phone catches fire.
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https://www.google.com/search?q=pocket+fire+extinguisher&tbm=isch>
Soon, everyone will be carrying pocket fire extinguishers.
Most manufacturers of laptops, smartphones, and cell phones have had
problems with older LiPo batteries. These would bulge, which is
normal during a fast charge cycle, which was most irritating, but
allegedly not considered hazardous. A few phones did catch fire,
which attracted media attention. However, what finally got their
attention was the large number of YouTube videos showing what happens
when someone pounds a nail into a LiPo battery pack. The result was
the general addition of a BMS (battery management system) designed to
protect the battery pack against over charge (above 4.2V), excessive
discharge current, and discharge below about 2.8V. That was
sufficient to reduce the number of spontaneous fires.
However, that didn't stop the problems at the manufacturing end. Sony
had a huge recall of laptop battery packs for leaving scrap metal
inside the cell which could eventually puncture the insulating
separator and start a fire. Samsung had a similar problem with two
generations of batteries in the S7.
<
http://www.techradar.com/news/samsung-galaxy-note-7-battery-fires-heres-why-they-exploded>
Ok, so much for batteries. However, we're talking about power
supplies, not batteries. We're also talking about a fairly small
number of smartphone batteries that caught fire. I'm too lazy to
calculate the odds, but I suspect you're safer carrying a Samsung S7
than you are trying to talk on your phone while charging it with
counterfeit Apple power supply charger. For a smoking battery, the
risks are statistical. For a counterfeit charger with insufficient AC
line isolation, their situational.
>Other well known brands have had their problems.
The Sony laptop battery recall affected almost every major laptop
manufacturer and a huge number of laptop batteries in 2006:
<
https://www.engadget.com/2006/10/19/sony-battery-recall-approaches-10-million-costs-mounting/>
When Sony laptops switched to Panasonic batteries, it happened again
in 2013:
<
https://www.laptopmag.com/articles/sony-vaio-batteries-recalled>
Apple had problems with some of their power supplies:
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https://www.apple.com/support/usbadapter-european/>
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https://www.apple.com/support/usbadapter/exchangeprogram/>
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https://www.apple.com/support/ac-wallplug-adapter/>
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https://www.apple.com/support/usbadapter-takeback/>
<
https://support.apple.com/en-us/HT204551>
Seen any recalls of counterfeit power supplies and chargers?