Samsung details why Note 7 batteries combusted

To find the cause of the Galaxy Note7 incidents, Samsung examined every aspect of the Galaxy Note7, including hardware, software and related processes over the past several months. Samsung's investigation, as well as the investigations completed by three independent industry organizations, concluded that the batteries were the cause of the Galaxy Note7 incidents. The causative factors are further explained in the infographic below.The presentation last night was quite informative, and both Samsung and the three independent organisation got time to explain their findings in quite some detail. Sadly, they removed the VOD of the livestream from YouTube, so there's no way to rewatch it (edit: someone uploaded the VOD), but some of the slides can be found at the bottom of the linked article.