Charging your phone will soon be a thing of the past.

Imagine never again having that frantic feeling that your smartphone battery is about to die.

Amazingly, charging your phone may soon be a thing of the past: Technology companies are developing a way for your gadgets to power up while they're sitting in your pocket.

By converting radio waves into battery-replenishing power, smartphones equipped with special receivers can literally pull energy right out of the air.

It's not far-off in the future stuff -- the technology is making its way to the real world in a matter of months.

Companies like Energous (WATT), Nikola Labs and a small handful of others have different ways to accomplish that, but their technology essentially works like this: Special antennas focus cellular and Wi-Fi signals into a pocket of low-powered energy around the back of your phone. A receiver on your phone then converts that radio energy into DC power that can charge the battery.

Wireless charging technology has existed for years in the form of power mats, pads and even Ikea furniture. But you need to keep your phone on the pad in order to charge it, making it only slightly more convenient and aesthetically pleasing than plugging it into the wall.

Long-distance wireless charging was long thought to be too dangerous. Walk between your phone and the charger, and you were likely to get zapped.

But by harnessing the energy that is already being sent to and from your phone -- radio signals -- you can charge your phone at a distance without worrying about being fried in the process.Energous plans on releasing wireless chargers and phone cases in late 2016 that will let you charge your phone at a distance of up to 20 feet. The company demonstrated the technology at this year's Consumer Electronics Show in Las Vegas, winning two "Best in Show" awards and three other honors.

At a distance of up to five feet, the company's transmitters charge phones at the same speed as a wall charger. Up to 10 feet, the speed is reduced to USB-charging levels. And up to 20 feet, your battery will charge at a rate of about 1% per minute.

But what makes Energous particularly compelling is that it claims to have signed a commitment with a "top tier" tech company that will build the wireless receivers right into the gadgets themselves (no case needed). Energous says that its nondisclosure agreement prevents it from naming the company, but CEO Stephen Rizzone told CNNMoney that the commitment is for "millions of devices," and "it's highly likely that you own some of this company's products." Hmmm....