Wireless Charging Groups Agree to Combine Standards Efforts

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Two rival standards bodies working on wireless recharging of batteries in portable devices have agreed to establish interoperability between their two incompatible standards.

The Power Matters Alliance (PMA) promotes inductive wireless charging, while the Alliance for Wireless Power (A4WP) promotes  resonant wireless charging.

The agreement calls for the PMA to adopt the A4WP specification as the PMA magnetic resonance charging specification for both transmitters and receivers in both single and multi-mode configurations.

Meanwhile, the A4WP will adopt the PMA inductive specification as a supported option for multi-mode inductive, magnetic resonance implementations.

"This announcement delivers a compelling message for the industry to commit and deliver wireless charging devices now. Between the organizations, A4WP and PMA membership consists of the key players necessary to drive industry consolidation and establish a commercially viable globally interoperable wireless charging ecosystem," said Kamil Grajski, President, Alliance for Wireless Power.

"The combined global market for wireless power receivers and transmitters is expected to rise to 1.7 billion unit shipments in 2023, up from about 25 million in 2013," said Ryan Sanderson, associate director, power supply & storage components at IHS Technology. "This liaison agreement serves to accelerate an interoperable wireless charging ecosystem seen as critical to the broad adoption by consumers."

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