ThinkPad Battery 27++

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ThinkPad Battery 27++

This is a battery pack that attaches to the docking port of a supported model.


  • Battery specification: 8.4Ah, 11.1V, 93.24Wh
  • Battery cell count: Nine, 3.7V lithium-ion cylindrical cell
  • Battery run time: up to 9 hours
  • Battery charge time: up to 5 hours
  • Weight: 610 grams or 1.35 pounds

Thinkpad battery 27++.jpg

Part numbers

  • 57Y4545, 42T4740, 42T4739

Models supporting this accessory