As battery explosion fears led to a global recall of Samsung’s premium Galaxy Note 7, the south Korean giant has for the first time revealed what caused the “rare” overheating of the battery cell. Samsung wrote: “Based on our investigation, we learned that there was an issue with the battery cell. An overheating of the battery cell occurred when the anode-to-cathode came into contact, which is a very rare manufacturing process error”. “While we have found a low risk probability of the issue occurring, at Samsung we believe that your safety is paramount and we would prefer you not to take any risks. We encourage Galaxy Note 7 consumers to take advantage of the exchange programme,” it added.