Dxqioo 7.4V 3000mah High quality battery for Harman Kardon Go Play batteries|Mobile Phone Batteries| - AliExpress
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LiPo Battery LP705258 2S 7.4V 3000mAh 22.2Wh with protection circuit and wires 50mm
Small Size 3.7V 4346112 3000mAh Lipo Polymer Battery Headset Bluetooth Batteries Rechargeable - China Big Lipo Battery, RC Heli Lipo Batteries | Made-in-China.com