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Product does not power on with battery power | SoundLink® Bluetooth® speaker III
Connect your product to a power outlet to exit battery protection mode.
If your product is not connected to a power outlet and not used for 24 days, it enters protection mode to preserve the battery life. New products are often in this mode since they typically stay in a box for more than 24 days.
Use only the Bose power supply intended for your product.
It is recommended to use only the Bose power supply included with your product. Using a third party power supply is not recommended. If it is necessary to connect a third party power supply, however, be sure the specs on the power supply match the power requirement found in your product specs.
Check if the battery is charged.
Be sure the battery is not depleted. For more information, see Checking the remaining battery charge.
Check if tones are heard when you unplug and plug in the power cord.
When unplugging, a tone should play on the left side. When plugging it back in, a tone should play on the right side. If you don’t hear these tones, the speaker may need service.
Reset your product.
Much like rebooting a smartphone, your product might need to be reset on occasion to correct minor issues. For more info, see Resetting your product.
