Qi

Qi refers to a standard of wireless power charging, most commonly found in iPhones and other mobile devices. 'Qi' (pronounced 'chee') comes from the Chinese word for 'energy flow.'

Qi protocol is certified by the WPC (Wireless Power Consortium):

• Low-power specification delivers up to 5 W (typically used to charge mobile devices)
• Medium-power specification will deliver up to 120 W (typically used to power displays and laptops)
• High-power specification that will deliver up to 1 kW (introduced 2015)
• Fast charging – up to 15 W