Disable the built-in battery

Follow the instructions to disable the built-in battery.

Restart your computer. When the logo screen is displayed, immediately press F1 to enter the UEFI BIOS menu.
Select Config > Power. The Power submenu is displayed.
Select Disable Built-in Battery and press Enter.
Select Yes in the Setup Confirmation window.

The built-in battery is disabled and the computer turns off automatically.

Wait three to five minutes to let the computer cool.

Note:If your computer cannot enter the UEFI BIOS menu, you cannot disable the built-in battery. To avoid short circuit when you replace a CRU, it is recommended to do the following:

For the built-in battery connected to the system board with cables: Disconnect the battery cables.
For the CRUable built-in battery connected to the system board with comb connectors: Disconnect the connectors by removing the battery. For the removal procedure, refer to the built-in battery replacement instructions in this documentation.
For the non-CRUable built-in battery connected to the system board with comb connectors: Call Lenovo Customer Support Center for help.

To check whether the built-in battery on your computer is a CRU, see the CRU list in CRU replacement.