5pcs CD42 DC 5V 2.1A Mobile Power Diy Board 3.7V/4.2V Charge Discharge Boost Battery Protection Indicator ModuleLithium 18650
USD 2.58USD 2.61
5pcs CD42 DC 5V 2.1A Mobile Power Diy Board 3.7V/4.2V Charge Discharge Boost Battery Protection Indicator ModuleLithium 18650