It's still quite difficult to cram lots of power at once into phones without an excessive risk of disaster. Many manufacturers making wall adapters, power controller chips, cables, and smartphones find that 18 watts is just fine, at least for now — beefier, more capable components should be coming to market soon. But in China, it's been one-upping after one-upping in the race to bring faster charging speeds to mobile devices, if only in demonstrations. For example, Xiaomi recently called out its 100W technology. In turn, vivo has run up the field with a new video showing off how fast 120 watts can charge a phone.

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