POWERADD Pilot Pro2 23000mAh Power Bank 4.5A DC (5V/9V/12V/16V/19V/20V, 3 Ports) Output External Battery with LCD Display for MacBook, Laptops, Smartphones and Tablets Ultra-high 23000mAh capacity provide more than 8 charges for an iPhone 6s, almost 6 charges for Samsung Galaxy S6, or 2 charges for iPad Air 2. 2 USB Smart Ports (3.1A MAX) to charge ALL devices at their max speed. Additional multi-voltage port (9V/12V/16V/19V/20V) for Asus, Acer & Surface tablets and more. Simultaneously charge 3 devices (4.5A max total output). Stylish and slim aluminum-body ensures good heat dissipation, and the smart LCD screen accurately displays power level, charging status and voltage selection. Made of AAA+ Li-Polymer battery cells, more than 500 recharge cycles during the course of its life. Please check the model, connector size, voltage and current of your original adapter to ensure compatibility. If you are not able to ensure compatibility, please contact our support service first. Package includes: Poweradd Pilot Pro2 x 1, 110 - 240V AC charger x 1, Charging tips x 10, Instruction manual x1, Feedback Card x 1; Poweradd offers 24-Month limited product warranty and 24h*7d customer service.