Charging cable 40W is the maximum power that the charging cable can withstand. For example, to charge a mobile phone, with this charging line, charging voltage 5V, maximum power 40W, 40\/5=8, the maximum flow current through the charging line is 8A. Charge your phone with this cable. It'll charge up quickly.
40w fast charge means that the power reaches 40w fast charge. 40w fast charging is faster than the traditional charging, the charging time is greatly reduced, and the charging efficiency is greatly improved. And under the premise of mature technology, the safety of fast charging has also been improved. As one of the well-known mobile phone brands, Huawei has innovated and reformed its own products again and again in such a competitive mobile phone market, and 40w fast charge technology is also a technology that Huawei brand is currently very proud of. Many people will worry that fast charging will be unsafe when using, in fact, as long as the technology is mature and stable, the safety of fast charging can be guaranteed, and there is no need to worry about accidents during use