Stay unplugged even longer with ThinkPad Battery 39+. This six-cell slice battery uses Lithium-Ion (Li-Ion) technology and easily attaches to our X1. Use along with system battery to provide an all-day computing experience.
Compatible with X1
Supports X1 ThinkPads
Lithium-Ion (Li-Ion) technology
Six cell, slice battery, 36Wh
Charged by system
Fast charge capability, charges to 80% of full capacity in 30 minutes with 90W AC adapter