I've often wondered, is it a case of diminishing returns for charging speed or is the battery itself the limiting factor? The OnPlus 7T Pro has 30w charging so beyond this do we need 60w+ to see any tangible improvement?Ultra supports 45w charging but comes with a 25w charger. However some tests have been done to compare the speeds and it is barely any different so is not worth paying extra for a 45w charger anyway