1. Start from zero charge, about 5 hours full.
2.15w wireless charge rated power is 15 watts, rated current is generally 1.2a, when the 15w wireless charge to its matching battery charging the actual charging current is less than its rated current, between 0.8-1 amp, that is to say, 15w wireless charge for an hour between 0.8-1 amp is normal. It can also be converted to between 800 and 1,000 milliamps.
It takes about two hours.
Mobile phone charging time, the use of fast charging high-power charging can only charge to 80%, the rest can only use low-power charging
Charging time = phone capacity *3.7\/15*2
For example, the mobile phone capacity is 4000mAH, and the charging time is approximately =4*3.7\/15*2=2 hours.
In addition, it should be noted that the first three times of charging must put the battery in the phone with line charging, which is also good for the machine.
It takes about an hour; 15W is not a fast charge