Olympus IR-500 Reference Manual page 27

About the battery level
You can check the battery level as follows when you turn on the camera or while you are using
the camera.
Lights (green)
Pictures can be taken.
Tip
The rate of battery consumption varies greatly depending on the operating conditions. In some cases, the
battery may run out of power before it shows the low battery warning. Charge the battery in that case.
Blinks (red)
The battery is running low. Charge the
battery as soon as possible.
Names of parts
"BATTERY EMPTY"
appears.
The battery is empty. Charge
the battery.
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