Li-Ion Battery for Harman Kardon Onyx Studio 1/2/3/4/li11b001f Bluetooth Speaker | eBay
Amazon.com: Replacement Battery for Harman/Kardon Onyx Studio 1, Onyx Studio 2, fits Part No LI11B001F, Li-ion 3400mAh/12.58Wh High-Capacity Batteries : Electronics