Universal External Laptop Battery Power your laptop to 3-4 hours’run time Specifications Weight: 500g Capacity: 5500mAh Cell type: Lithium-ion battery Dimension: 185×126×13.5(mm) Output voltage: 5.5V,16V,19V Output current: 3.75A(16V) Chargefor all the Laptop and USB Device Shipping Policy We usually use express, such as UPS,DHL.EMS.TNT,and so on. WE would like to arrange Air-express and Ocean Shipping for you as you required. Payment Policy •T/T to our HSBC account •Western Union (500-2000USD) •Paypal (100-500USD)