The speaker may be in protection mode. If the system is disconnected from AC power and unused for 14 days or more, it goes into a protection mode to preserve battery power. Plug your system into AC power to reactivate it
Power troubleshooting
Applies to:
Speaker will not turn on
Make sure the cover is open. The speaker will not turn on if the cover is closed.
Try charging the battery on a different AC plug. There may be a problem with the power outlet you’re using
Perform a product reset. To perform a SoundLink® speaker reset, follow these steps:
on the speaker, press and hold mute for 10 seconds; the leds will flash briefly
Mute

press power to turn the soundlink® speaker back on
Power
