Two battery defects caused Galaxy Note 7 explosions
Samsung's full investigation into their issues with the Galaxy Note 7 has blamed two major battery defects as
the root cause of numerous device explosions that lead to a worldwide
recall. After testing more than 200,000 defective devices with the help
of 700 dedicated staff, Samsung identified specific issues with the
design and manufacturing of these batteries, but claimed there were no
issues with the rest of their smartphone's hardware or software.
In the first set of batteries, manufactured by Samsung SDI, there was
a flaw in the upper right corner of the battery that caused a
deflection in the negative electrode. This deflection led to a short
circuit, which caused fires and explosions in some cases. Samsung also
identified a secondary issue where the negative electrode was
incorrectly located in the curve of the battery.
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