After almost 5 months of silence following the global recall of the Galaxy Note 7 smartphone all over the world Samsung
The Real Cause Of Samsung Galaxy Note 7’s Exploding Battery
One of the largest smartphone makers has blamed not just one but two poorly made batteries for a series of the Samsung Galaxy Note 7 fires across the world and 2 unprecedented recalls costing billions of dollars. According to The Observer, Samsung revealed the verdicts of its late Galaxy Note 7 after the investigation at a worldwide press conference today.
The mobile communications business president DJ Koh started by "deeply" apologizing to customers for its global failure. The Samsung Galaxy Note 7 recalled two weeks later after many of the devices caught fire. It includes one that damaged at Melbourne hotel room and another that allegedly caught fire on a car and plane, that cause its evacuation.
Mr. Koh said that Samsung hired 3 external firms just to solely investigate why the Galaxy Note 7 were catching fire, in addition to setting up its own laboratory to test 200,000 devices and 30,000 batteries. The created group for this project tested all aspects of the smartphone, including its fast-charging battery system, software, water-resistance as well as its iris scanner.
Samsung Galaxy Note 7’s Battery: The Main Culprit
Based on Samsung's own research and independent scientific analysis regarding the issue on the Galaxy Note 7, the overheating was caused by separate problems in batteries sourced from 2 different suppliers, according to Wired.
As per the batteries sourced from Samsung SDI, the real cause of the explosion is that there wasn’t enough room between the heat-sealed protective pouch around the battery and its internals. Because the Samsung Galaxy Note 7 was so slim, tight quarters placed stress on the upper right corner of each of the battery. In the worst scenarios, that caused electrodes inside the battery to crimp and come into contact, which leads to the thermal runaway and short circuiting.
As per the batteries from Amperex Technology Limited, some battery cells were missing insulation tape, and some had sharp protrusions inside the cell that led to damage to the separator between the anode and cathode. The batteries also had thin separators in general, which increased the risks of separator damage and short circuiting.