Nowadays, every time we travel, we always have batteries with us. They are either in our phones, headphones, laptops, activity trackers, smart watches, and cameras and many of them use Lithium-Ion batteries. Problem with batteries is that they can sometimes explode or burst into flames if they are have defects, damaged, or mishandled. Airlines are very much concerned about these that they require that passengers carry them in their carry-ons rather in the cargo with their checked-in luggage so that flight attendants can deal with such incidents quickly.
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