Lenovo Laptop Battery L20C4P74, L20D4P74, L20L4P74, L20M4P74 Battery type: Li-ion Battery rating: 15.36V Battery capacity: 3564mAh Battery energy: 54.7Wh Number of cells: 4-cell Battery color: Black Compatible with ThinkPad X13 G2 Series , ThinkPad X13 G2 20SX001UUS ,ThinkPad X13 G2 20W8001YAU , ThinkPad X13 G2 20WK001MGE ,ThinkPad X13 G2 20WKS00400 4 Cell Laptop Battery