What is a wireless phone charger in my car?
Quite simply, a wireless phone charger is a way of charging your smartphone in the car, wirelessly.
An alternating current (AC) from the car moves through the wire in the charging pad, which creates a magnetic field. When the phone is placed on the tray and within this magnetic field, a current is induced in the coil, which charges the phone’s battery.
It’s the reason why wireless charging can often, and more accurately, be described as 'inductive charging', because it uses magnetic induction to charge a phone. And although we’re focusing on smartphones here, you may already use an electric toothbrush that uses the same wireless charging technology.
However, there is a reason we normally plug devices in to charge them: it’s more efficient to transmit energy over a wire, which means it takes less time to charge your phone.