This Bose S1 Pro System Battery Pack is designed to power your S1 Pro or S1 Pro for up to 11 hours. Key features include: Lithium-ion battery Highly efficient for full output Up to 11 hours of operating time Only for S1 Pro and S1 Pro Fuel The Sound. Add this Bose S1 Pro System Battery Pack to your S1 Pro or S1 Pro for impeccable sound quality up to 11 hours on low power, and 5 hours on max power. This lithium-ion battery provides full-output use of the speaker you choose without compromising volume level. Q & A Can this battery be used in both S1 Pro and S1 Pro ? Yes! The Bose S1 Pro System Battery Pack is compatible with both the Bose S1 Pro and the Bose S1 Pro .
