3S 20A PCB BMS Li-ion Battery Protection Board 18650 12.6V Lipo Cell Module. USB to TTL CP2102 UART Module 5Pin Serial Convertor 5v 3.3v + FREE Cables. Upper Limit Working Current: 8A. 6 Pin USB 2.0 to TTL UART Module Serial Converter CH340G Module STC 5V/3.3V.
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