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 or a trip, with this universal battery pack and few cables, you need not carry any chargers ... 1.Capacity: 18000mAh Voltage/Capacity: 3.7V/66.6WH2. Internal Battery type: Li-polymer / 4-cells3.DC IN: 18V 2A 4. ...