Huawei has unveiled a new EV megawatt charging system that can add around 250 miles of range in just five minutes.The 1.5 megawatt charger delivers up to 2,400 amps of current and pumps in energy at a rate of 20 kilowatt-hours per minute.This development is aimed at heavy-duty electric trucks, allowing them to get back on the road quickly.Huawei's charging arm, which can automatically plug into a car without any human involvement, can work with this new charging system.