according to a latest report from Fudzilla, Qualcomm Snapdragon 830 SoC is said to support Quick Charge 4.0 with fast charging speeds of up to 28W. This will be Qualcomm’s most powerful fast charging solution till date.
As per the report, new charger is expected to support configurations of up to 5V/4.7A~5.6A, 9V/4A. Qualcomm has developed a new technology called Intelligent Negotiation for Optimum Voltage (INOV) which identifies how much power the battery can handle at that particular moment and lowers and raises it as required to prevent overheating.
The first Snapdragon 830 device might launch in Q1 2017 which means we will know more details about Quick Charge 4.0 by that time. As per earlier leaks, Snapdragon 830 is said to come with support for up to 8GB of RAM.