Compatible with: NYI Harman Kardon Replacement Battery compatible with Harman Kardon Onyx Studio, Harman Kardon Onyx Studio-1,Harman Kardon Studio-2, Harman Kardon Studio-3, Harman Kardon Studio-4, li11b001f Speaker. High Capacity: 3500mAh Large Capacity Li-ion replacement battery; Battery voltage: 3.7V / 12.95Wh. High Quality & Safety: NYI Harman Kardon Onyx Studio battery built-in PTC protections (pressure, temperature, current),make sure the battery run stably and perfectly. Package Includes: 1 pc harman kardon replacement battery, 2 pcs tools, 2 pcs adhesive tapes. After-sales Service: 12 months warranty.24 hours email support. Your satisfaction is important to us, please contact us with any question.