To purchase replacement batteries, contact your local authorized Bose dealer. Be sure to dispose of the old battery properly. To remove and attach a new battery, follow these steps:
Using your thumbnail or a coin, push in the slotted knob on the battery and turn it counterclockwise to unlock the battery
Carefully pull the battery away from the back of the system
On the new battery, make sure the slot in the knob on the battery is in a horizontal position
Insert the battery into the multi-pin connector
Push in the slotted knob and turn it clockwise until the slot is vertical. This locks the battery in place
Connect the power supply and charge the battery
WARNING: Replace the system battery with a genuine battery from Bose or an authorized Bose dealer. Bose cannot guarantee the safety and compatibility, or assure the operability of batteries from other manufacturers for use in operating your Bose® system.