18w 20w charging These two are generally 9v2a and 5v4.5a, that is, 18w and 22w fast charging. It's a quarter faster than the former.For example, OPPO's VOOC evolved to SuperVOOC, and the charging power soared from 22W\/20W to 50W; Huawei\/Honor SuperCharge increased from 22.5W to 40W; vivo's dual-engine flash charge has also been increased from 18W in the past to 22.5W, and the new iQOO has brought 44W charging power; The Mi 9 is also not satisfied with the traditional 18W, and the trend has increased to 27W.