When installing:
Plug the gray cable into the connector labeled MAIN on the card; and plug the black cable into the connector
labeled AUX on the card.
1120 Battery pack
For access, remove this FRU:
• "1030 Base cover assembly" on page 65
Important notices for replacing a battery pack
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 Lenovo Companion program provides an automatic battery diagnostic test that determines if the battery
pack is defective. A battery pack FRU should not be replaced unless this diagnostic test shows that the
battery is defective. The only exception to this is if the battery pack is physically damaged or a customer is
reporting a possible safety issue.
If the Lenovo Companion program is not installed on the computer, the customer should download and
install the program to diagnose the battery pack, before getting a non-physically damaged battery pack
replaced. Note that the replacement of a physically damaged battery pack is not covered by the warranty.
Removal steps of the battery pack
DANGER
Use only the authorized battery specified for your computer. Any other battery could ignite or
explode.
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E480, E485, and R480 Hardware Maintenance Manual