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When installing: Ensure that the connector is attached firmly.
1090 Built-in battery
For access, remove these FRUs in order:
• "Removing the nano-SIM card and the nano-SIM-card tray" on page 70
• "1020 Base cover assembly" on page 72
Important notices for replacing a built-in battery
Attention: Lenovo has no responsibility for the performance or safety of unauthorized batteries, and
provides no warranties for failures or damage arising out of their use.
The Vantage app provides an automatic battery diagnostic test that determines if the built-in battery is
defective. A built-in battery FRU should not be replaced unless this diagnostic test shows that the battery is
defective. The only exception to this is if the built-in battery is physically damaged or a customer is reporting
a possible safety issue.
If the Vantage app is not installed on the computer, the customer should download and install the program to
diagnose the built-in battery, before getting a non-physically damaged built-in battery replaced. Note that the
replacement of a physically damaged built-in battery is not covered by the warranty.
Removal steps of the built-in battery
DANGER
Use only the authorized battery specified for your computer. Any other battery could ignite or
explode.
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T14 Gen 2 and P14s Gen 2 Hardware Maintenance Manual
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