HQRP Battery for Harman Kardon Onyx Studio, Onyx Studio-2 Wireless Bluetooth Speaker System - Walmart.com
Amazon.com: ZZcell High Capacity Battery Replacement for Harman Kardon LI11B001F Onyx Studio 1, Onyx Studio 2 Only (Not Compatible with Studio 3) : Electronics
Harman Kardon Onyx Studio 2 Battery
Onyx Studio 2 | Wireless Speaker System with rechargeable battery and built-in microphone
Harman Kardon Onyx Studio 6 Portable Bluetooth Speaker Black HKOS6BLKAM - Best Buy