Portable Charger (Power Bank) Silicon Power 20,000 mAh with 22.5W output (New/Clean) Capacity: 20,000 mAh (enough to charge your phone multiple times). Output: Fast charging at 22.5W. Technologies: Supports fast charging and PD & QC technologies. Features: Smart digital display shows battery percentage accurately. 3 multi-charging ports. Full protection against overcurrent and complete safety for devices. Model Number: 010030. The battery is well-known and its performance is excellent.