PASS THROUGH Charging: Support charge and discharge at the same time. The function is activated by pressing the power button for 2 seconds while the power bank is recharging. Note: It will turn off after 1 minute to save power if there is no device connecting to it. HIGH CAPACITY 50000mAh/185Wh: Compatible with popular laptops. It includes 14 connectors, a TYPE-C converter and a Mag-Safe 2 cable for laptops. (Pls make sure the connector fits for your laptop before purchasing). DC-IN 19V/2A enables the power bank to be recharged in 6 hours. BRIGHT LED DISPLAY & PORTABLE SIZE: Bright Led display builts in battery to show the DC voltage and remaining battery level. 19.5x15x2.8cm and 1.2kg make it easy to carry on. You can quickly put it in your briefcase, backpack or carrying bag when you're on the go. Adjustable DC Output 5V-20V: The DC OUT port supports 5V/8.4V/9V/12V - 3A (max); 16V(compatible 16.5V) / 20V(compatible 19V, 19.5V for laptops) - 4.7A (max). Krisdonia 50,000 can