Canon EOS R5 Advanced User's Manual page 794

Caution
Do not apply the label on any part other than as shown in the illustration in step 2.
Otherwise, the misplaced label may make it difficult to insert the battery or
impossible to turn on the power.
When you use Battery Grip BG-R10 (sold separately), the label may peel off after
repeated insertion and removal from the battery magazine. If it peels off, apply a
new label.
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