Extend the play time of your Bose S1 Pro Wireless System with an extra battery or replace an existing one. This lithium-ion battery provides up to 11 hours per charge and installs easily into the dedicated compartment on your S1 Pro for secure and reliable use.

• Up to 11 hours of play when used at high-output levels for performance use you can count on
• Lithium-ion battery technology provides high-energy density and full-output use of your S1 Pro System without compromising volume level
• Permanently install the battery inside the S1 Pro System for safe and easy charging
• Compatibility - Bose S1 Pro Wireless PA System