Lenovo Battery ThinkPad T440p 57+ 6 Cell - For Notebook - Battery Rechargeable - 5200 mAh - 57 Wh - 10.8 V DC

Lithium Ion (Li-Ion) battery chemistry delivers energy to the notebook through an easily controlled reaction Delivers 10.8 V DC to your compatible notebook, ensuring that your device is ready to use when needed With 5200 mAh capacity, the battery delivers a long lasting charge to your notebook More environment-friendly as compared to the disposable ones