Ultrabay Slim Battery II

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Advanced Ultrabay Battery

This is a battery pack that slides into an Ultrabay Slim or Enhanced with power interfacing pins.


  • Battery specification: 2.7Ah, 10.8V, 29.16Wh
  • Battery cell count: Three, 3.6V lithium-ion polymer prismatic cell
  • Battery run time: up to 2.3 hours
  • Battery charge time: up to 4.6 hours
  • Weight: 235 grams or 0.52 pounds

Advanced Ultrabay Battery

Part numbers

  • 40Y6789, 40Y6790

Usage and Linux support

See How to use Ultrabay batteries.

Models supporting this accessory