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3.7V 4000mAh Harman Kardon Battery, Replacement Battery Compatible with Harman/Kardon Onyx Studio 1/2 / 3/4 Onyx Studio 2 - AliExpress
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ZZcell Battery Compatible for Harman Kardon Onyx Studio 5, Onyx Studio 6, HKOS6GRYSG, HKOS6BLKSG, ID997, IAA007NA 3.7V 3250mAh 3.7Volts 3250mAh - Walmart.com
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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
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