Lithium-Ion (Li-Ion). 3600 mAh 57 Wh. 15.4 V. Brand compatibility: Lenovo. Black. Number of batteries included: 1 pc(s). Replacement 4 cell Notebook Battery for Thinkpad X1 Carbon G6, G7, G8, G9, G10, G11. Features. Brand compatibility. Lenovo. Product colour. Black. Battery voltage. 15.4 V. Number of battery cells. 4. Battery capacity. 3600 mAh. Battery technology. Lithium-Ion (Li-Ion). Packaging data. Quantity per pack. 1 pc(s). Number of batteries included. 1 pc(s). leaflet. Origin Promo. Origin Eco