Realme demonstrated its new 320W SuperSonic Charge technology at an event in Shenzhen. | Image: Realme Realme has once again taken the lead in the fast charging arms race with its new 320W SuperSonic Charge technology. The company demonstrated the tech by fully charging a smartphone with a 4,420mAh battery (which is a bit smaller than what's in the new Pixel 9 and 9 Pro) in four minutes and 30 seconds.The charging speeds are made possible by two key innovations announced during an event in Shenzhen, China. Realme managed to boost the power output of its existing 240W charger that debuted last year to 320W without increasing its size. The Pocket Cannon, as the upgraded charger is called, also now features two USB-C ports capable of delivering 150W to Realme's smartphones, and 65W to devices like laptops.