Advanced Ultrabay Battery

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Advanced Ultrabay Battery

This is a battery that slides into a supported Ultrabay Slim or Ultrabay Enhanced slot.


  • 10.8V Lithium-ion
  • Capacity: 2.7Ah / 29.16 WH
  • Weight: 235g (0.52 lbs)
  • Up to 8.5 hours of battery life on select systems in combination with main battery

Advanced Ultrabay Battery

Part numbers

  • Order PN: 40Y6789
  • FRU PN: 40Y6790

Usage and Linux support

See How to use Ultrabay batteries.

Supported with