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No power | Bose Bluetooth headset Series 2
Be sure the headset is powered on.
Make sure the power switch (located on the bottom of the headset) is in the on position. This is indicated by the visible green area under the switch.
Check if the battery is charged.
Be sure the battery is not depleted. For more info see, Checking the remaining battery charge and Charging your headphones.
Be sure to charge the headset using a Bose power supply or USB power source with equivalent specifications.
The power supply included with the headset, as well as the Bose 12-volt car charger accessory, charges the headset with 1 amp of current. Other USB chargers and computer USB ports may only charge at 500 milliamps (mA). This slower rate of charge will require more time for the headset to reach a full charge and may not provide enough power to indicate a full charge (green LED). It is recommended to use the Bose-supplied charger or one that is sure to provide 1 amp (1A or 1000 mA) or current
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