Nikon Z 9 Reference Manual page 890

Actions such as the following can reduce battery endurance:
•
keeping the shutter-release button pressed halfway,
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repeated autofocus operations,
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taking NEF (RAW) photographs,
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slow shutter speeds,
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using camera Wi-Fi (wireless LAN) and Bluetooth features,
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using the built-in GNSS receiver,
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using the camera with optional accessories connected,
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repeatedly zooming in and out, and
•
taking pictures at low ambient temperatures.
Battery Endurance
890