MH-CD42 DC 5V 2.1A Mobile Power Diy Board 4.2V Charge/Discharge(Boost)/Battery Protection/Indicator Module 3.7V Lithium 18650
USD 2.60
MH-CD42 DC 5V 2.1A Mobile Power Diy Board 4.2V Charge/Discharge(Boost)/Battery Protection/Indicator Module 3.7V Lithium 18650