Hands on with the ThinkPad X240: Two batteries are better than one | ZDNET
Lenovo ThinkPad X260 (20F5/20F6) original Battery 24Wh - sparepartworld.com
Second x270 came. This time with two batteries. One question though. FN + keys after f5 or so don't work but they work on the black one. Has the x270 been available
Lenovo X260 Laptop Review: Insanely Long Battery Life - SlashGear