18650 Lithium battery Adjustable Step Up 3.7V 9V 5V 2A
Suitable for 3.7V or 4.2V lithium batteries. 3.7V 9V 5V 2A Adjustable Step Up 18650 Lithium Battery Charging Discharge Integrated Module Can be used for mustimeters, modified lithium battery charging Can be used with many applications: Ex: A multi-meter converted to a lithium battery charger, VIN+Port input 5V solar panels, BAT+port can