The Qi wireless charging standard from the Wireless Power Consortium (WPC) is having a relatively good year. Now is a good time for a bird’s-eye view of the technology—how it works, what it ...

Hundreds of police depts. take Gracie Survival Tactics, a defense program utilizing jiu-jitsu. But the family of its architect has ties to the far right dating back to the 1930s.

Rener, whose family created Brazilian jiu-jitsu, calls the move “ SafeWrap,” and he is teaching it to the NYPD. “SafeWrap” can “take down a noncomplying suspect safely and effectively ...

While Qi’s maximum wireless charge is 15W, Apple’s iPhone supports only 7.5W via Qi. Which iPhones use Qi? Qi charging is built into the iPhone 8, X, XR, XS, SE, 11, 12, 13, and 14 families.

Qi 2.2 is technically capable of up to 25W charging output. In contrast, the Qi 2 standard maxes out at 15W (although iPhone 16 models support upgraded MagSafe charging – with a 30W Apple ...

Current Qi devices will be able to draw power from these new transmitters at distances of up to 30 mm (around 1.2 inches), while devices with purpose-build Qi 1.2 receivers increase the distance ...

Rener Gracie -- the Brazillian Jiu-Jitsu star who co-created Gracie University -- has a side business that he's pitching on this Sunday's edition of Shark Tank. As you'll see from this exclusive ...