Lenovo X230 - Manual (Page 107)

Detaching the ThinkPad Battery 19+
To detach the ThinkPad Battery 19+, do the following:
1. Unlock the battery latch by sliding it to the unlocked position.
2. Release the eject lever 2 and detach the ThinkPad Battery 19+.
Charging the ThinkPad Battery 19+
The ThinkPad Battery 19+ can be charged separately when connected to ac power source.
Chapter 7 . Enhancing your computer 89