IBM Battery Li-Ion 8-Cell f TP X40 Lithium-Ion (Li-Ion) 4100mAh 14.4V rechargeable battery

Battery Li-Ion 8-Cell f TP X40 Stay unplugged longer. Get twice the capacity of the 4-cell system battery and up to 7.5 hours of battery life on select systems. This high capacity battery has an extended area on the back edge and fits in the standard ThinkPad X40 Series system battery slot. Its compatible design allows it to be in the system when the system is connected to the optional ThinkPad X4 UltraBase Dock. All-day computing is a reality (up to 10.7 hours*) on select systems when you combine the ThinkPad X40 Series 8 Cell Li-Ion Battery with the optional ThinkPad Ultrabay Slim Li Polymer Battery in the ThinkPad X4 UltraBase Dock.

Features and Benefits:

· Twice the capacity of the 4-cell system battery and up to 7.5 hours* of battery life to stay unplugged longer
· Designed so ThinkPad X40 Series system fits in the ThinkPad X4 UltraBase Dock.
· Backed by IBM Service and Support.