Sekonic Speedmaster L-858D-U Light Meter - Manual (Page 22)

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2. Before Use
2-5 Checking the Battery Capacity
When the power is turned ON, the LCD screen will show the battery capacity indicator.
Sufficient battery life remaining.
Adequate battery life remaining.
Have a spare battery ready.
Replace the battery immediately.
NOTE
● When battery power is low and the meter is turned ON, the LCD screen will appear, then
turn off immediately. This is an indication that the batteries have been depleted and they
should be replaced immediately.
It is recommended that spare batteries be kept on hand.
● When the meter is continuously used at room temperature, the battery should last
15 hours (based on Sekonic testing methods).
2-6 Replacing Batteries
● Always turn off the power before replacing batteries.
If you replace batteries while the power is turned on, the measured values that are
obtained during operations are not saved. Also, this may cause a failure.
● If an unexpected display appears on the LCD during battery replacement or
measurement, i.e. settings other than selected, or if the meter does not respond when
a button is pressed, remove the batteries, wait at least 10 seconds, and then re-install
them.
Measuring Screen
Battery
Capacity
Indicator