The unique ThinkPad X40 Series Extended Life Battery provides up to 3.5 hours of battery life. It connects to the bottom of the ThinkPad X40 Series notebook via the UltraBase Dock connector. Its clever design includes a retractable foot to tilt the system to a more ergonomic typing angle.
- Lithium Ion
- Output: 14.4v
- Recharge time: 3 hours
