Hercules DJControlWave Getting Started page 9

3.3. Battery charge level
The battery's charge level is displayed in the DJUCED™ DJW app.
On the Hercules DJControlWave, a battery level indicator flashes in red
when the battery's level is less than 10%.
The level indicator stays lit up in red while the battery is charging, and
goes off when the battery is fully charged.
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