Qualcomm announced Quick Charge 4 with the unveiling of the Snapdragon 835 at the beginning of the year and now it brings a more polished version of the standard. Its name is Quick Charge 4+ and should be considered as an update to the previous standard since both can be used on the same chipset. Quick Charge 4 devices can switch to QC4+ if manufacturers decide to include three enhancements. Dual Charge is similar to an earlier version of Quick Charge, but now Qualcomm says it is "more powerful". There is also Intelligent Thermal Balancing that steers current through the less used...
Source: http://www.gsmarena.com/qualcomm_introduces_faster_and_more_efficient_quick_charge_4-news-25386.php
