IBM Extended Life Battery for ThinkPad X31 Lithium-Ion (Li-Ion) 10.8V rechargeable battery

TP X30 Ext. Life Battery All-day computing is a reality (up to 8 hours on select systems) when combined with system battery with the ThinkPad X30 Series Extended Life Battery. This unique battery can be added to the bottom of the ThinkPad X30 notebook to provide up to 8.0 hours of computing on select models. Its clever design includes a bar that extends below the battery to tilt the system to a more ergonomic typing angle. At only one lb, it's easy to carry extra battery power anywhere you go.

Features & Benefits:
• All-day (up to 8 hours) computing on select models
• 2. Provides improved ergonomics with retractable foot for comfortable typing angle.
• Backed by IBM Service and Support