This fast charger charges up to 50% battery level in 30 minutes, 75% faster than standard chargers. Fast speed charging, less time.   This fast wall charger compatible with both Quick Charge 2.0 (QC 2.0) and Adaptive Fast Charging (AFC),enables mobile phone to be 50% charged in 30 mins (Samsung S9 is used as the test object, it has a 3000mAh battery and supports the Quick Charger 2.0), 75% faster than conventional chargers.