Ultra-High Capacity: The massive 20,000mAh capacity provides 3.6 charges for iPhone 15 and 2.9 charges for Samsung Galaxy S23 Ultra. Bi-Directional USB-C Charging: The USB-C port supports two-way charging with a 15W power for both input and output, allowing you to charge two devices simultaneously. PowerIQ and VoltageBoost Technology: Experience fast and safe charging for all devices with Anker's leading technology, including a trickle-charging mode for low-power accessories. Multiple Recharge Options: Choose between USB-C or Micro USB ports to recharge the power bank. Achieve a full charge in just 9 hours with a 15W or higher charger. /