The 15w fast charge is about half an hour faster than the ordinary charge. The 15W fast charge is currently in the second-to-last charging level, and only 10W is currently less than 15W. There are 18w, 20w, 30w, 33w, 50w, 60w, 65w, 66w, 67w, 68w, 90w, 120w next year and 150w, 165w, from these can see what level 15w is currently at, 15W is only able to use the level, charging speed is appalling. Super fast charge mobile phone Super fast charge is that when the mobile phone is charging, the voltage of the mobile phone is particularly high, and the charging speed is particularly fast.
At present, mobile phone chargers are very fast to charge, 15w charger is not fast, and even a little slow. 15W fast charge provides 3A charging current, 25W fast charge provides 5A charging current, when two chargers at the same time to charge 4000mA battery capacity of the mobile phone, 15W fast charge takes 1 hour and 20 minutes, 25W fast charge takes 48 minutes.
It takes about two hours, because it takes a little trickle charging time when the battery is nearly full.