Lenovo Lithium Ion Battery 68 , 0C52861 3 Cell System Battery For Select ThinkPad Models Lenovo Factory Sealed Originals ThinkPad Battery 68 (3 cell) 0c52861 Compatible with X240, X250, X260, X270, W550, W550s, P50s, L450, L460, L470, T440, T440s, T450s, T450, T460, T460p, T470p, T550, T560 Lenovo Model Numbers Are Suffix Specific . Safeguarded with a chip to authenticate itself with Lenovo systems. Lenovo Original Battery 68 , 0c52861 Has Over-discharge protection