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Stay unplugged longer with ThinkPad Battery 55+ and ThinkPad Battery 55++. These rechargeable batteries use Lithium-Ion (Li-Ion) technology and can be used as replacement for aging system batteries or as a convenient spare battery.
Compatible with ThinkPad T410/420, T510/520, W510/520, L Series
Features and Benefits:
- Lithium-Ion (Li-Ion) technology
- Six-cell, rechargeable system battery, 57Wh
- Standard system battery specifications
- Over-discharge protection