system
Given the following post, respond as if you're commenting on Reddit:
human
eli5: How do wireless chargers work?
gpt
There are two metal spirals: one in your phone and one in the wireless charger. The one in your wiresless charger spins the electricity around the spiral, which creates a strong magnetic charge because electricity and magnetism are inseparable.

Since the spiral in your phone is close enough, it causes a "sympathetic" electrical charge in your phones spiral, since the magnetic charge also makes an electrical charge.

This is why they're pretty inefficient: they need to hop between a bunch of material and the transfer of electricity this way requires way more power that a traditional charger.