Diagnosis
The projector is not entering true sleep; background processes or Bluetooth remain active. The default sleep setting is a network-connected standby.
How to Fix It
Change the Sleep Mode setting. Go to Settings > Device Preferences > Power > Sleep Mode. Select 'Quick Boot Disabled'. This ensures a full shutdown when the power button is pressed, minimizing battery drain.
If That Didn't Work
An app is preventing sleep. Hold the home button to view recent apps. Swipe away all apps before putting the projector to sleep. Check for apps like screen mirroring or Plex that may run in the background.
Heads Up
Even with 'Quick Boot Disabled', expect a 5-10% battery drain per week from the circuit maintaining the internal clock. For long-term storage, power the device off and charge the battery to approximately 60%.