Wireless charging: what is it?
As you’ve probably guessed from the name, wireless charging is a way of charging a device - such as a smartphone - without plugging a cable into it.
Wireless charging tends to come in two distinct flavors: it can be built into the actual phone, as it is in the Samsung Galaxy S6, or it can be added to an existing device via a wireless charging case, such as the Wireless Charging S-View case for the Galaxy S5.
The latter option enables you to add wireless charging to devices that didn’t ship with the technology, although of course it also adds bulk and costs money to do that. In between those options is an optional battery cover that has Qi built-in, like for the LG G3.
Wireless charging: how does it work?
Bad news for Insane Clown Posse fans: wireless charging uses magnets, which are famously mysterious to ICP and their juggalo friends. For the rest of us it’s actually pretty straightforward: wireless charging uses electromagnetic fields in one device to induce an electric current in a metal coil inside another device.
That current powers the battery, and because the electricity is created inside the device being charged there are no safety issues to consider or exciting sparks to look at or frighten your pets with.
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