Bose S1 Pro+ Battery Pack Replacement Rechargeable Li-Ion PA Speaker Battery
Compatibility: Bose S1 Pro+ Wireless PA System. Permanently install the battery inside the S1 Pro+ System for safe and easy charging. Speaker Weight (lbs): 15.7. Wired or Wireless: Wireless. Up to 11 hours of play when used at high-output levels for performance use you can count on.