3. Insert the battery case into the M4, and tighten the battery compartment locking screw.
NOTE:
• Use only one type of battery (alkaline, NiMH or lithium) at a time.
• Set the type of battery used correctly so that the amount of remaining battery charge can be shown
accurately. (→Setting the type of batteries used)
• If the batteries run out of power, turn the power off immediately and install new batteries. The remaining
battery power will usually be shown when using battery power (except for some screens).
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