The fifth episode of the second season of science and technology relativity'The Crimes and Punishments of Lithium Batteries'.[In addition to Li-ion Battery, do we have a better choice?] With so much talk about explosion of Samsung NOTE7 these days, althougth it remains unanswered, the problem must be related to battery. Are the batteries of phone  dangerous? Why don't you change another batteries? Is it develope hardly in battery market  without Li-ion battery?

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