3.7V 7.4V 11.1V 12V 18650 6800mAh with wires Lithium ion rechargeable battery with PCB for Bluetooth Speaker Solar headlights

3.7V 7.4V 11.1V 12V 18650 6800mAh with wires Lithium ion rechargeable battery with PCB for Bluetooth Speaker Solar headlights

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