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by writtenabode 2802 days ago
You can actually read the specification here: https://www.wirelesspowerconsortium.com/downloads/download-w...

As of at least 1.2.2 (April 2016) the Qi spec has supported 15 W through an Extended Power Profile

A Baseline Power Profile supporting transfer of up to about 5 W and an Extended Power Profile supporting transfer of up to about 15 W of power using an appropriate Secondary Coil (having a typical outer dimension of around 40 mm).