In 2017 Qualcomm’s next flagship Snapdragon 830 is coming and according to a report from fudzilla it will come with Quick Charge 4.0. In quick-charge technology, your smartphone determines what power level to request at any point in time. If more power can be requested without damaging the chemical composition of the battery, the charger can provide it. Quick Charge 3.0 can support anything between 3.6V to 20V in 200mV increments. This is called ‘Intelligent Negotiation for Optimum Voltage’, or INOV. Quick Charge 3.0 is said to enable up to 27% faster charging over QC 2.0 or up to 38% more efficient.
Quick Charge 4.0 should be an improvement over 3.0 but We’re not sure exactly how much faster it will be over the previous version.