Total Micro - Notebook battery - lithium ion - 9-cell - 7800 mAh - for Lenovo ThinkPad R400; R61; R61i; R61u; T400; T61; T61u

10.8 V DC battery - Ensures a steady and uninterrupted supply to your notebook Helps you keep your notebook ready to use anytime Lithium Ion (Li-Ion) battery chemistry delivers energy to the notebook through an easily controlled reaction