Samsung Finally Reveals Why the Note 7 Kept Exploding
Well, it wasn't the stylus. After months of silence following a global recall of its Galaxy Note 7 smartphone last October, Samsung disclosed its lengthy findings as to what caused the device's batteries to overheat and catch fire. In the worst scenarios, that caused electrodes inside each battery to crimp, weaken the separator between the electrodes, and cause short circuiting.1 In the case of batteries sourced from Amperex Technology Limited, some cells were missing insulation tape, and some batteries had sharp protrusions inside the cell that led to damage to the separator between the anode and cathode. In September, weeks after the Note 7 launched, Samsung issued an initial recall of 2.5 million devices after several phones experienced overheating issues. Samsung had purportedly pinpointed the cause of the problem: It had used two sources for the Note 7 batteries, and the ones made by Samsung’s own component division seemed to be faulty.
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