Enough.
5W charging speed is enough, usually watch a video, see a news information, in the room will not lose power, always have 5W to complete the battery life of your phone, this is the real use scenario.
The implementation process is relatively complicated. It is necessary to miniaturize the antenna array in the mobile phone and use a specific air separation charging pile. However, this technology has ushered in a big breakthrough, millet space charging technology has achieved a few meters radius, multiple devices can also be charged at the same time (each device supports 5 watts), and even foreign body occlusion does not reduce the charging efficiency.
Definitely not enough, now are 66 watts, 120 watts, 200 watts of wired charging, 5 watts to rush for a long time, may take 5, 6 hours, how can such a speed can endure, so no.
It's enough, as long as it's not too rushed