DETAILS: Provides up to one-third more capacity than the standard system battery. This high-capacity battery has an extended area on the back edge and fits in the standard ThinkPad T40/R50 system battery slot. It can be used even when the notebook is connected to the ThinkPad Dock II, Mini-Dock or Port Replicator II. It can be recharged with the optional ThinkPad Multiple Battery Charger II. All-day unplugged computing is possible (up to eight hours on select T40/R50 systems) when the ThinkPad T40/R50 Series 9-Cell Li-Ion Battery is combined with the optional ThinkPad Ultrabay Slim Li-Polymer Battery. Battery life (and also recharge time) will vary depending upon screen brightness, applications used, features installed, power management settings, battery condition and other customer preferences. Product Description Lenovo ThinkPad notebook battery - Li-Ion - 7.2 Ah Device Type: Notebook battery Dimensions (WxDxH): 8.9 in x 3.2 in x 0.8 in Weight: 1.1 lbs Battery: Lithium ion 7.2 Ah Batteries Qty: 1 Run Time (Up To): 6 hour(s) Manufacturer Warranty: 1 year warranty ALTERNATE ITEM #: 92P1102 UPC: 0000435609328