Battery type: NiMH Capacity: 440 mAh Voltage: 4.8 V Energy: 2.21 Wh Number of cells: 1 Weight: 43 g Compatible with the following device models: BMW F06 640i xDriveN55 3.0L BMW F06 640i N55 3.0L To ensure compatibility, please check to see whether the battery you are currently using is listed below. Replacement for: BMW 84109297787 BMW 9 297 787-02 .