Stay unplugged longer with the ThinkPad Battery 66+ (6 cell). This rechargeable battery uses Lithium-Ion (Li-Ion) technology and can be used as replacement for aging system batteries or as a convenient spare battery.

Features and Benefits:

- Lithium-Ion (Li-Ion) technology
- Six-cell, rechargeable system battery, 44Wh
- Standard system battery specifications
- Over-discharge protection

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