In Graphics: Samsung introduces Graphene Ball battery, can charge a smartphone within 12 m
सैमसंग ने एक ऐसी बैटरी बनाई है जो 12 मिनट में स्मार्टफोन को फुल चार्ज कर सकता है.


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In Graphics: Samsung introduces Graphene Ball battery, can charge a smartphone within 12 m

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