Charging the battery

Lithium batteries have a built-in auto-off feature when a full charge is reached to prevent the battery from being overcharged. Even while still plugged in, the battery level will have to drop below a certain point to trigger the charging again.

NOTE:

• Make sure you’re using the Bose-provided USB-C cable or a similar USB-C cable providing a minimum of 5V/3A.
• A USB-C to USB-C cable is recommended over a USB-A to USB-C as it supports the fastest charging speeds. Using a USB-A to USB-C cable may result in slower charging.

1. Connect one end of the USB-C cable to the USB-C port on the back of the speaker.
   
2. Connect the other end of the cable to a power source such as a USB-C power supply or a computer.
   

The Power light slowly blinks white. When the battery is fully charged, the Power light glows solid white.

Charging Time

Allow up to 5 hours to fully charge the battery using a 3A/15W charger *Charging times will vary when not using a 15 Watt Power supply.
A full charge powers the speaker up to 20 hours. At maximum volume, the battery lasts up to 3 hours.
Charging time and battery performance vary with the USB power supply capability, music content, speaker volume, and if charging an external device.