Plausible, if only it were solely from Samsung SDI batteries, and only when the phones were on charge. I can't imagine any tiny spikes causing this. These phones burst into flames while they weren't charging, and also while not in use, as well as with non Samsung SDI batteries, as the replacements used batteries made by Amperex technologies limited, a company that supplies batteries for Apple products, including the iPhone. I understood that they were fairly certain fires included the Samsung SDI batteries initially, so I don't think it's likely that all the fires could have been from the original 30% initial batch of Amperex batteries, which could explain the continued fires if that were the case, could maybe even explain the iPhone 7 fire, though as I understand it Apple may be using several outlets for their batteries, so difficult to tell at this point. This is why I think there is something else causing the overheating that eventually causes the batteries to become unstable. What component in the note 7 is different or changed in some way, than their previous phones, that would have any bearing on how much strain is put directly on the batteries? Probably should be where they start, or have already started looking. Or, I suppose there could be a minor design flaw in the battery compartment inside the phone, one causing a puncture, potentially. Could you imagine if it was something as dumb as that?