CD42 DC 5V 2.1A Mobile Power Diy Board 3.7V/4.2V Charge Discharge Boost Battery Protection Indicator ModuleLithium 18650
USD 1.03USD 1.08
CD42 DC 5V 2.1A Mobile Power Diy Board 3.7V/4.2V Charge Discharge Boost Battery Protection Indicator ModuleLithium 18650