Wattage (W)

Power & Charging

The rate of energy transfer, equal to voltage multiplied by current (V x A = W).

A 65W charger delivers energy faster than a 15W charger. For USB-C, wattage depends on the negotiated voltage and current: 5V at 3A = 15W (phone), 20V at 5A = 100W (laptop), 48V at 5A = 240W (high-performance laptop).

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