A mobile phone charger’s power consumption is typically measured in watts, a unit of power representing the rate at which electrical energy is transferred. The wattage indicates the amount of electricity the charger draws from a power source to replenish a mobile phone’s battery. For example, a charger labeled “5W” consumes 5 watts during operation.
Understanding the power usage of these chargers is beneficial for several reasons. It allows for estimation of energy costs, particularly when considering the cumulative effect of multiple devices charging regularly. Historically, mobile phone chargers have evolved from less efficient, higher-wattage models to more energy-conscious designs, reflecting a growing emphasis on sustainability and reduced energy consumption.