The PowerCore 20000 is one of the first portable chargers to use the Quick Charge 3.0 output. It charges up to 4x faster than standard chargers and can charge compatible devices up to 80% in 35 minutes. The PowerCore 20000 will also charge Non-Quick Charge devices at max speed. Its ultra-high 20000mAh capacity is enough to charge an iPhone 7 seven times, Galaxy S8 more than four times and iPad Air 2 one and a half times. It is more compact than competing high-capacity portable chargers and is equipped with a multi-protect microchip that provides surge, short circuit and low voltage protection. This portable charger also has an auto shut off sleep mode. Comes with a worry-free 18 month manufacturer warranty.