Detailed Product Description Battery pack, external laptop battery, universal laptop battery, laptop battery, This battery is external and portable. When you are out for business ... Specification:1.Capacity: 18000mAh Voltage/Capacity: 3.7V/66.6WH2. Internal Battery type: Li-polymer / 4-cells3.DC IN: 18V 2A 4 ... E. USB cable For: Laptop, Mobile Phone, PDA, iPod,PSP,NDSL,DPF,Portable DVD and others.