Potência (W)
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A taxa de transferência de energia, igual à tensão multiplicada pela corrente (V x A = W).
Um carregador de 65W entrega energia mais rápido que um de 15W. Para USB-C, a potência depende da tensão e corrente negociadas: 5V a 3A = 15W (telefone), 20V a 5A = 100W (laptop), 48V a 5A = 240W (laptop de alta performance).