Cause of Samsung's Galaxy Note7 Incidents Determined

by Tech Mainstream Staff


January 23, 2017



In a recent press release , Samsung Electronics, along with three independent industry organizations, has come to the conclusion that batteries were the cause of the Galaxy Note7 issues. Over the last few months, Samsung "examined every aspect of the Galaxy Note7, including hardware, software and related processes." Both Battery A (from the first recall) and Battery B (from the second recall) were examined. A damaged separator in the battery allowed positive and negative electrodes to meet and essentially produce a short circuit within the jellyroll or battery.

In Battery A, the main cause was "the negative electrode was deflected in the upper-right corner of the battery" and an additional contributing factor was "the tip of the negative electrode was incorrectly located in the curve, not the planar area." In Battery B, the main cause was "high welding burrs on the positive electrode resulted in the penetration of the insulation tape and separator which then caused direct contact between the positive tab and the negative electrode" and an additional contributing factor was "a number of batteries were missing insulation tape."

DJ Koh, President of Mobile Communications Business, Samsung Electronics, "shared detailed results of the investigation and expressed his sincere apology and gratitude to Galaxy Note7 customers, mobile operators, retail and distribution partners and business partners for their patience and continued support." As a result of the Galaxy Note7 investigation, Samsung has vowed to improve future smartphone "internal quality and safety processes" by instituting "multi-layer safety measures and an 8-Point Battery Safety Check." Samsung also initiated a "Battery Advisory Group of external advisers, academic and research experts" to prevent future battery problems.

For more details, visit Samsung Electronics Announces Cause of Galaxy Note7 Incidents

 

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