Stay unplugged even longer with ThinkPad Battery 19+. This rechargeable six-cell slim external battery uses Lithium-Ion (Li-Ion) technology and easily attaches to our X220.

Features and Benefits:

- Supports X220 ThinkPads
- Lithium-Ion (Li-Ion) technology
- Six cell, rechargeable system battery, 64Wh Allows direct charge from AC adapter (65W, 90W, 135W)
- No external battery charger needed
- Hot pluggable
- Standard system battery specifications
- Over-discharge protection