Old, but still need to ask and searching "x1" sucks...
In two of three years, if you still have the device, the battery CAN be replaced. I ordered the slice for mine as I will be using it in the field and need a good days work between charging.
Is it user replaceable or does it need to be sent in? Where can you buy a replacement or what's the model number to replace it? Thanks[/quote]
My comments about the slice did not refer to the X1 Carbon as no slice is available. Only internal battery and I am sure if you keep your laptops for 5 years. The average user will run it for maybe 3 years or less and the battery should not be an issue. If one thinks it will be they should look elsewhere, but for those who want an Ultra book most do not have/need replaceable batteries.