A 30 watt fast charge takes 1.5 hours to fill.
The rated power of 30W fast charge is 30 watts, when the actual charging power of 30 watts fast charge to the mobile phone is less than 30 watts, only about 25 watts, it can also be converted to 0.025 KWH, which is the charging amount of 30 watts fast charge for an hour, about 0.025 degrees of electricity, so 30 watts fast charge for an hour can be charged 0.025 degrees of electricity, You can basically charge your phone 70%.