Samsung reveals what caused exploding Note 7 batteries

Samsung reveals what caused exploding Note 7 batteries [Image: magann via iStock]

Samsung has revealed the results of its inquiry into the exploding batteries in the recalled Galaxy Note 7.

According to the firm, there were faults with both the original and replacement batteries, causing the devices to explode into flames. Samsung said that there was no fault with the hardware or software.

In September, Samsung was forced to recall more than 2.5 million Note 7s after widespread reports that the smartphones were overheating and catching fire. Although Samsung then sourced batteries from a different manufacturer, the problems remained.

The inquiry into the problems revealed that the original battery had been produced with a casing that was too small. This battery was replaced with one that had a manufacturing flaw that caused the same explosion. The inquiry also found that some of the replacement batteries were missing insulation tape.

Samsung assured consumers that there would be no further risk of fire with any future devices, including the upcoming Galaxy S8. In a statement, Samsung said: “We are taking responsibility for our failure to ultimately identify and verify the issues arising out of battery design and manufacturing.

“We have taken several corrective actions to ensure this never happens again.”

The statement went on to say that Samsung was looking forward to “moving ahead with a renewed commitment to safety,” adding that the lessons of the past several months are “now deeply reflected in our processes and in our culture”.

The firm conducted an investigation of 200,000 phones and 30,000 extra batteries. Although 700 dedicated staff members worked on the task, Samsung also commissioned three other firms that all found similar results.

Koh Dong-jin, head of Samsung’s mobile business, told reporters: “We sincerely apologise for the discomfort and concern we have caused to our customers.”