With the news that Energous was rebranding as Energous Wireless Power Solutions to really drive home its messaging, Wireless Watch’s curiosity was piqued. Just how much has changed in the wireless power space since the hype died off pre-covid? Broadly, there are two ways to send power to a device through the air – radio frequency (RF), or infrared (IR) light. Physics makes such explanations challenging, but both are essentially using the energy of the emission to generate electricity in the end-device. Specialist silicon is required, but companies like Atmosic can provide implementations in off-the-shelf Bluetooth chips these days. Wireless charging was a hot topic at the height of the IoT craze. It represented a way to tackle the battery-constraint…