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Xiaomi is making remote wireless charging a reality with ‘Air Charge’ tech

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Over the last 18 months, Xiaomi has delivered several breakthroughs in wireless charging. Its Mi 10 flagships featured 30W wireless charging as standard, and the Chinese manufacturer recently showed off an insane 80W charging tech that could end up in its 2021 flagship, the Mi 11 Pro.

Xiaomi is now showcasing a remote charging tech that delivers a 5W charge “within a radius of several meters,” with the brand noting that the charging efficiency won’t be reduced even if there are obstacles in the way.

Dubbed Mi Air Charge Technology, the remote charging system works the following way:

The core technology of Xiaomi’s remote charging lies in space positioning and energy transmission. Xiaomi’s self-developed isolated charging pile has five phase interference antennas built in, which can accurately detect the location of the smartphone. A phase control array composed of 144 antennas transmits millimeter-wide waves directly to the phone through beamforming.

On the smartphone side, Xiaomi has also developed a miniaturized antenna array with built-in “beacon antenna” and “receiving antenna array”. Beacon antenna broadcasts position information with low power consumption.

The receiving antenna array composed of 14 antennas converts the millimeter wave signal emitted by the charging pile into electric energy through the rectifier circuit, to turn the sci-fi charging experience into reality.

Xiaomi says the tech can be used with speakers, smartwatches, fitness bands, desk lamps and other smart home devices, but as of now there’s no mention of when Mi Air Charge Technology will debut in consumer products. It isn’t likely we will see the tech in 2021, but it could make its way to Xiaomi’s ecosystem products in the coming years.

Other manufacturers have tried (and failed) to make a remote charging standard, but Xiaomi’s advantage is that it has a vast ecosystem of connected products. It can leverage its ecosystem to create a truly remote charging solution, and we’ll keep an eye out for more details on Mi Air Charge Technology.

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