Remove The Battery Pack; Step 1. Peel Off The Three Pieces Of Tape - Lenovo IdeaPad Duet 3i Hardware Maintenance Manual

Figure 8. Remove the EDP cable
Go to
https://support.lenovo.com/partslookup
part:
EDP cable

Remove the battery pack

Make sure the following FRU (or CRU) has been removed.
"Remove the LCD module" on page 28
Step 1. Peel off the three pieces of tape.
Figure 9. Peel off the three pieces of tape.
Step 2. Remove three screws and then remove the battery pack.
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Hardware Maintenance Manual
to look up the Lenovo part number of the following replacement