The Xiaomi Mi 10 Ultra stunned with its 120 W wired charging support, but the 50 W wireless charging capability surpasses what many phones can do with a cable plugged in. Using Xiaomi’s revamped charging technology, the phone’s 4,500 mAh battery can be filled fully in just 40 minutes. The company posted a lengthy explanation on just how this technology works. The key was to change the layout of the bits between the coil and the battery – the charge pumps (these are DC-DC converters that are used to increase or decrease voltage). Instead of the traditional layout of having two charge...