Lithium-Ion (Li-Ion). 5600 mAh 60 Wh. 10.8 V. Brand compatibility: Lenovo. Black. Number of batteries included: 1 pc(s). BTI has invested in people, training programs, equipment and components to ensure the highest level of quality, safety and performance. Providing and exceptional level of service is something that our customers have come to expect from BTI.. Features. Compatible products. Thinkpad L450, T440, T440s, T450, T450s, T550, X240, X250. Brand compatibility. Lenovo. Product colour. Black. Battery voltage. 10.8 V. Number of battery cells. 6. Battery capacity. 5600 mAh. Battery technology. Lithium-Ion (Li-Ion). Packaging data. Number of batteries included. 1 pc(s)