Replacement Battery TypeLi-ion;
Voltage: 16.8V;
Capacity: 32WH/2200mAh ^^ Compatible P/N300769-001, 300769-002, 300769-003, 300770-001, 300769-004, 4ICR19/66. ^^ Compatible Models For Bose Sounddock Portable Digital Music System SoundLink Air Series ^^ DG QualityGrade A cells mitigate the risk of battery leakage and maximize output stability. Built-in circuit protection, enhances safety of usage and extends battery life. ^^ DG TIPSFor the initial installation, please reinstall and check the interface fully connected, discharge the battery to 5%(not to 0%) and then charge to 95%, and cycle 3-4 times.