Our office recently installed new wall plugs with both the Type D plug outlet (South Africa) and a USB point to charge your phone straight from the wall, without the need for the little white charger that you’d otherwise use.
IF we can use electricity straight from the wall into the phone/powerpack/battery through a USB cable, what is the use of a charge and how exactly does it work?
In: 3
The wall adapter converts Alternating current at whatever voltage/frequency it’s supplied at to direct current at a voltage your phone wants.
Some wall outlets include such a adapter behind the wall plate to provide a USB port for device charging. This is an extra expense, but offers some additional convenience to the user.
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