Samsung blames batteries from two makers for Note7 explosions

Samsung Electronics on Monday blamed batteries supplied by two manufacturers for the overheating and even explosions of some Galaxy Note7 phones, as it tried to provide a long due explanation for the issues surrounding the smartphone.

The announcement by the company, a day ahead of its reporting fourth-quarter results, had experts from TUV Rheinland, Exponent and UL stating that internal manufacturing and design defects of the batteries, including missing insulating tape in some cases, and not the design of the phones, were responsible for the battery issues.

The negative electrode windings in the battery of an unnamed “manufacturer A,” which first supplied the batteries for the Note7 phones, were found in some cases to be damaged and bent because the cell pouch did not provide enough volume to accommodate the battery assembly, said Kevin White, Exponent’s principal scientist, at a press conference that was webcast.

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