Serial Ultrabay Slim Battery II

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Serial Ultrabay Slim Battery II (57Y4536)

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

Features

  • Battery specification: 2.9Ah, 10.8V, 31.32Wh
  • Battery cell count: Three, 3.6V lithium-ion polymer prismatic cell
  • Battery run time: up to 2.5 hours
  • Battery charge time: up to 5 hours
  • Weight: 235 grams or 0.52 pounds

FOOTNOTES [Δ]
  1. This battery pack cannot be used in T4x/R5x models as they have a different battery pin layout.
  2. This battery pack cannot be used in a T430s or a T430si as it does not have a battery controller that is recognized by the aforementioned models.

Advanced Ultrabay Battery

Part numbers

Branded as the Advanced Ultrabay Battery III, Sony

  • 45K1749

Branded as the ThinkPad Battery 42, Sony

  • 51J0508 (51J0507)

Usage and Linux support

See How to use Ultrabay batteries.

Models supporting this accessory