The Anker Zolo Power Bank (20K, 22.5W, Built-In USB-C Cable) is a portable charger that keeps phones powered through long travel days and busy workweeks. Its 20,000mAh capacity delivers about 3.73 charges for an iPhone 16 and 4.17 for a Samsung S24, based on Anker lab testing, while weighing only 13.8 oz. Up to 22.5W max output charges an iPhone 16 Pro Max to 50% in 34 minutes, and it is compatible with 15W Samsung charging. A 7-inch built-in USB-C cable is designed to withstand 10,000 bends, so there is no loose cable to forget. Pass-through charging lets you power your phone while the power bank recharges. This high capacity USB-C power bank is a practical everyday carry for commuters, travelers and event attendees. With its neutral black color option, the Anker Zolo makes a useful branded corporate gift and a dependable promotional tech gift for clients, employees and trade show giveaways.