Lenovo L20C4PC2, L20M4PC2 Battery type: Li-Polymer (Lithium-Polymer) Capacity: 5210mAh (80Wh) Voltage: 15.36V Number of cells: 4-cell Reusability: Rechargeable Compatible with Legion 5-17ITH6 / 5-17ITH6H (82JN, 82JM series) Legion 5-17ACH6 / 5-17ACH6H (82K0, 82JY series) Legion 5 Pro series 4 Cell Laptop Battery