From Bose Portable PA Encyclopedia
- Disconnect everything (audio, USB connections, Power)
- Remove the battery [1]
- Wait 30 seconds
- Reinstall the battery[1]
- Reconnect
- ↑ 1.0 1.1 Remove or Install the battery
The screw heads are Phillips.
Note: The screws remain attached to the battery cover. You can't misplace or lose them because they don't separate from the battery cover.