After 35 confirmed cases of the battery problem, Samsung has chosen to withdraw flagship phone Galaxy Note 7.
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35 may sound a bit, especially considering that 2.5 million units have been produced. But typically fail about one of ten million batteries, type Forbes . Those who bought the Galaxy Note 7 will therefore be replaced by a new mobile.
– Battery problems are extremely rare, says Donal Finegan, a chemical engineer at University College London, to Forbes.
– Although it is exceptionally rare creates all possible faults much media attention and therefore may affect the reputation of a product that relies on battery.
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Donal Finegan studying why batteries stop working and just lithium-ion batteries, used in mobile phones, has a particularly high risk of overheating.
– They are so energy-dense, they contain so much power and electricity, they can burn at a particularly disastrous way.
the overheating can occur in different ways, by the mobile is in a warm place, by another component mobile transfers heat to the battery, or by the battery itself simply becomes too hot, as is the case with Note 7.
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system that monitors the battery charge is broken and do not stop charging the battery may be overcharged and thus overheat.
– the battery continues charged and may become even more unstable and eventually just start burning without any external influence, says Donal Finegan.
Mobile Batteries should also preferably be rectangular and flat, for mobile application to be designed as thin as possible. But these batteries are less safe, according to Donal Fine Gans research. Round batteries because they often have an extra safety device in the middle, which allows the battery electrodes do not collapse as easily.
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