DQ-92P0987-6 Whether you"re at home or on-the-go, a long life lithium-ion laptop battery will ensure that you have the power you need, when you need it. Features: -Rechargeable battery. -Safe lithium-ion technology. -Smart technology communicates accurate information to the computer. -No memory-effect. -Overcharge protection built in. Specifications: -6 Cells. -Provides 58Whr of capacity. -Replaces the following IBM part numbers: 92P0989, 92P0990, 08K8218, 92P0987, 92P988. -Fits the following IBM models: IBM THINKPAD R40E.