Pro Series Upgrades Longer-Lasting Battery for 45% More Charging Power XL-Capacity Battery with High-Density Cells High-Efficiency Circuitry Laptop-Level Power in an Ultra-Slim Design Digital Battery Level Display Satin Matte Finish Charge 2 Devices at Once Fast Charging for multiple devices Supports Samsung Super Fast Charging Full-Speed Charging for MacBook Air 35W USB-C Power Delivery with PPS 18W USB Adaptive Fast Charge Universal Compatibility SmartChip Safety Features 3.5HR Ultra-Fast Recharge Pass-Through Charging Reduced-Plastic Packaging Battery Type: Li-Ion Capacity: 20,000 mAh 74 Wh Max Output: 35W USB-C PD In/Out: 5V 3A / 9V 3A / 12V 3A / 15V 2.33A / 20V 1.75A (35W Max) PPS Output: 3.311V 3A (33W Max) USB Output: 4.5V 5A / 5V 4.5A / 5-6.5V 3A / 6.5-9V 2A / 9-12V 1.5A (22.5W Max) Shared Output: 5V 3A Max 2.4 x 6 x 1 in 12.5 oz Protection: Short Circuit/Overcharge