Lenovo Thinkpad T440, User Manual

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2. Unlock the battery latch 1 by sliding it to the unlocked position. Then slide the latch 2 to the unlocked
position and hold it in the unlocked position, and then remove the battery pack 3 .
3. Insert a new battery pack until it clicks into place. Ensure that the latches are in the locked positions.
Installing or replacing the SIM card
Before you start, print these instructions.
SIM card is a small plastic card with Integrated Circuit (IC) chip mounted on one side of the card.
If your computer supports wireless WAN connections, your computer might require a SIM card to establish
wireless WAN connections. Depending on the country or region of delivery, you might need to purchase
a SIM card or a SIM card might already be installed in your computer or is part of the shipping contents
that come with your computer.
To install or replace the SIM card, do the following:
1. Disable the built-in battery. See “Disabling the built-in battery” on page 71.
2. Remove the external battery pack. See “Replacing the external battery pack” on page 72.
Chapter 6
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Replacing devices
73