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1PCS 1S 3.7V 3A BMS PCM 18650 Lithium Battery Protection Board
DC-DC Auto Step-Up and Step-Down Power Supply Module 80W voltage regulator DC4.5-80V to DC0.5-33V Boost Buck Power Supply Board
XY5008E DC-DC Buck Boost Converter CC CV 6-55V Digital Control Adjustable Regulated Laboratory Power Supply High Accuracy