* Battery Chemistry: Lithium Ion * Capacity: 60-138watt-hrs * Input (Adapter Output): DC17.5v/1.5A * Output: 16v and 20vDC switch selectable * Charge Time: 240 minutes * Physical Dimensions: 155mm*105mm*29/43mm * Operation Temperature: -10 degree-40 degree * Pack weight: about 1050G(138WH:1600G)