Two-Way Charging: Equipped with the latest Power Delivery 3.1 and bi-directional technology Easy-to-read digital display shows the output and input power and estimated time for the portable charger to fully recharge. With Anker's most advanced GaN-powered charging system, an innovative stacked design, PowerIQ 4.0 for higher efficiency, and ActiveShield 2.0 for intelligent temperature monitoring. Featuring a 24,000mAh battery capacity and 2× longer-lasting battery life