Ultrabay Thin Battery

ThinkPad Battery 50 This is a battery pack that slides into an Ultrabay Thin. Features Battery specification: 2.12Ah, 11.2V, 23.74Wh Battery cell count: Three, 3.73V lithium-ion polymer pouch cell Battery run time: up to 2 hours Battery charge time: up to 4 hours Weight: 200 grams or 0.44 pounds

Part numbers

Branded as the 3 Cell Li-Polymer Bay Battery

• 42T4520

Branded as the ThinkPad Battery 50

• 43R1966

Usage and Linux support

See How to use Ultrabay batteries.

Models supporting this accessory

• X300, X301