These days we have all kinds of mobile devices, not just our cell phones, but laptops, smart speakers, iPads, and other tablets that all require one thing. An external power supply that you plug into the wall and then plug into your device, we call them wall warts.

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What is that power supply doing when it's not plugged into your device?

According to msn.com,

‘ Forgetting to unplug a charger once or twice isn't likely to cause any noticeable differences. However, make a habit of constantly leaving every charger you use plugged into various outlets throughout the home. It can lead to significant consequences for your home, devices, chargers, and wallet.’

The first thing to remember is that it's called a power supply for a reas

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