<p>Difference between QC3.0 and QC 2.0</p> <p><br /><br />Lower Power Consumption:<br />QC3.0 consumes power less than QC2.0,then the charging heat reduce.</p> <p><br /><br />Higher Charging Efficiency:<br />QC3.0 Charging Efficiency is 38% higher than QC2.0, 4 times that of standard charging . It can charge a mobile phone from 1% to 80% in 35 minutes.</p> <p><br /><br />Super Fast Charge&amp;Safer<br />QC 3.0 has the super fast charging speed and independent circuit. Qualcomm QC3.0 ensure it has UL certification for quality and safety standards.</p> <p><br /><br />What is a PD?</p> <p><br /><br />Power Delivery (PD) is a specification for handling higher power and allows a range of devices to charge quickly over a USB connection. For example, if you were to connect two phones that support Power Delivery with a USB-C charging cable, one phone could charge the other and vice versa</p>