Adaptive rapid charging is the latest in USB battery charging technology that can charge devices 75% faster than conventional chargers. At the forefront of this technology is Qualcomm's Quick Charge 2.0 protocol. Quick Charge 2.0 works by detecting commands from Quick Charge 2.0 enabled devices, such as a cellphones and tablets, and adjusting the output voltage of the AC-DC charger to increase power delivery to the devices battery.