Electricians often stress the importance of unplugging chargers when not in use due to the phenomenon known as ‘phantom load’ or ‘vampire power.’ This occurs when chargers continue to draw power even when not connected to a device. On average, a single charger can draw about 0.26 watts of power when not in use. While this might seem negligible, considering the number of chargers in a typical household, the cumulative effect can lead to substantial energy wastage over time.
Moreover, this constant power drain can lead to overheating of the charger, potentially causing damage to the internal components. Even if your charger seems cool to the touch, the internal circuitry might be slowly degrading, reducing the lifespan of the charger and increasing the risk of malfunction over time.