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Amazon.com: ZZcell High Capacity Battery Replacement for Harman Kardon LI11B001F Onyx Studio 1, Onyx Studio 2 Only (Not Compatible with Studio 3) : Electronics
For Harman Kardon Replacement Battery 3200Mah Replacement Battery For Harman/Kardon Onyx Studio 1/2 / 3/4 / Li11b001f Wireless Bluetooth Speaker Laptop Batteries / AC Adapters - Newegg.com