1010 Battery Pack - Lenovo ThinkPad X220 Hardware Maintenance Manual

Some models of the ThinkPad X220 and X220i you are servicing might have the SIM card that the customer
has been installed.
If the computer you are servicing has the SIM card, remove it before you start the servicing.
To remove the SIM card, you need to remove the battery pack first. (See "1010 Battery pack" on page 62.)
After you finish the servicing, make sure that you insert the card back into the slot firmly.
Notice on disconnecting a cable from a flip-lock ZIF connector:
Some cables used in ThinkPad X220 and X220i models are connected to flip-lock ZIF connectors.
When disconnecting a cable from a flip-lock ZIP connector, do as shown in the following figure.
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1010 Battery pack

Important notice for replacing a battery pack:
The Lenovo ThinkVantage Toolbox and Lenovo Solution Center (in Windows 7) have an automatic battery
diagnostic that determines if the battery pack is defective. A battery pack FRU should not be replaced unless
this diagnostic shows that the battery is defective.
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Hardware Maintenance Manual