5400mAH ID770 New Battery for Sony SRS-XB30 SRS-XB40 Bluetooth speaker battery | eBay
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Amazon.com: Pickle Power V1 Version Battery Compatible with JBL Charge 2 +,Charge 2 Plus 3.7V 6200mAh Replacement Bluetooth Speaker Battery GSP1029102R(Wire Place Red-White-Black) : Electronics
Lithium-ion Polymer Cells Factory Produce Bluetooth Speaker Battery UFX 375678 3.7V 2500mAh Rechargeable Battery
Chinese Cheap Bluetooth Speaker Lipo Battery UFX 832238 850mAh 3.7V Li-Polymer Battery With Wire
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X8 Portable Bluetooth Speaker, TWS, IPX7 Waterproof, Stereo, Power Bank, LED – Sound Town