The Anker Advantage: Join the 55 million+ powered by our leading technology. Charge Fast Anywhere: The 20W USB-C port has enough power to charge an iPhone 12 to 50% in just 30 minutes. Also equipped with an 18W USB port if you need to charge a second device. Ultra-High Cell Capacity: The massive 20,000mAh cell capacity provides 5 charges for iPhone 12, more than 4 full charges for Samsung Galaxy S10, and over 2 and a half charges for iPad mini 5. Wide Compatibility: Charge virtually any mobile device including phones, tablets, and more.