system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 how do wireless chargers work?

Charged my smartphone on a wireless charger and I’m convinced it is black magic or witchcraft. It barely charged (sitting for 4 hours, only went up by 10%.) I assume it has something to do with electrons…
gpt
When you move current through coils. You generate magnetic field in the direction normal to the coils. If you alternate this current (positive to negative) the field will also alternate.
When you move alternating magnetic field across a coils. Current is generated.

Thus getting a wire -> air -> wire transmission of electrical energy.