CUKTECH 15 Ultra Power Bank, 20000mAh 140W Laptop Charger, 3-Port USB C Charger, PD3.1 Fast Charging Battery Pack with Smart Display, Compatible with iPhone 16/15/14/13, Samsung, MacBook, Dell, etc. PD3.1 165W Max Output, Ultimate Fast Charging: Single-port maximum PD3.1 140W, our power bank can intelligently distribute power according to your usage scenario. Our CUKTECH 20000mAh portable power bank provides ample power for multiple charges, ensuring you stay connected and powered all day. Battery Capacity Explanation: The battery capacity refers to the total energy stored in the power bank’s internal battery. The rated capacity of a power bank is typically slightly lower than its battery capacity.