Panasonic LUMIX S5IIX Operating Instructions Manual page 56

Getting Started – Charging the Battery
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[Power Save Mode] is not available in the following cases:
– While connected to a PC
– During video recording/video playback
– During a [Time Lapse Shot]
– When recording with [Stop Motion Animation] (when [Auto Shooting] is set)
– When recording with [Live View Composite]
– When recording with [Focus Transition]
– During a [Slide Show]
– During HDMI output for recording
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