Qi through different materials

What happens if you place different materials between your Qi charger and your phone?

This Qi fanboy tried different materials:

  • A regular black sock.
  • A comic book.
  • A plastic chopping board (4-5 mm thick).
  • A Bluray Disc
  • A stainless steel pan
  • Two centimeters of air

Unsurprisingly, charging through stainless steel doesn''t work (you can see the white LED on the charger blinking fast, which means that power transfer is not possible). 

Note also the large freedom of positioning. Alignment between charger and phone is not at all critical.

 

 

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