High Capacity: 3500mAh Kratax replacement battery has 35% more capacity than the original battery, providing longer lasting performance for your speaker.
Easy to Use: The package includes the necessary screwdriver and pry bar for battery replacement, which makes it easy to replace the battery. The included cushioning sponge strip is used to wrap the battery to prevent vibration noise when playing music. The sponge of connecting cables can better protect the wiring from damage.
Hassle-free Purchase: Made with accessories that are equivalent to the original battery and built with the same battery construction for smoother use.
Applicable models: Compatible with Harman Kardon Onyx Studio, Onyx Studio 2, Onyx Studio 3, Onyx Studio 4 wireless bluetooth speakers.
Safety Protection: Built-in protection circuits to avoid overcharging, over-discharging, short-circuit protection and charging protection to ensure the safety of the battery and speakers. Passed ISO9001, RoHS and CE international certification.