Charging 40% in an hour is not fast.
If the current mobile phone is generally fast charged, it will certainly fall within half 40 minutes, and the mobile phone can be full of electricity, which is called fast charging.
An hour charge of 40% to two hours full, is already a standard charging mode.
You can replace an electric charger head, and the Internet speed should be able to achieve fast mode.
No, this should be considered a slow charge, 40% fast charge can be charged in about ten minutes
Not fast charge, half an hour to charge about 60%, 1 hour to charge 88%, fully full takes more than 1 hour or so. To meet the fast charge conditions