From CNET: During a press conference Sunday, Samsung said two separate battery defects caused both the original batch of Galaxy Note 7 phones and the replacement units to overheat.
The first battery, it said, suffered from a design flaw. The battery's external casing was too small for the components inside, causing it to short-circuit and ignite.
The second battery, which came from another supplier, didn't have the same flaw, Justin Denison, head of product strategy and marketing for Samsung's US arm, said in an interview ahead of the press conference. In the rush to pump out enough batteries for the replacement units, though, the supplier introduced a manufacturing defect that led to the same result, he said.
The explanation puts to rest the mystery behind the exploding Note 7, but it kicks off a new challenge for the embattled company: winning back your trust after a disastrous several months that included two recalls and the decision to kill the critically acclaimed phone. The Sunday press conference marked the start of a Samsung campaign to rebuild company credibility, which will include the upcoming launch of the flagship Galaxy S8 phone, as well as another Note later in the year.
"It was a painful crisis to me," D.J. Koh, Samsung's mobile chief, said in an interview ahead of the press conference. He called it the worst stretch in his 33 years with the company.
Having not one, but two batteries from different suppliers fail -- for different reasons -- is a bizarre coincidence that may surprise and frustrate some who were looking for a single, clean explanation.
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