18650 1 Slot Battery Holder:Wire Length: 5.9"/15cm,copper conductor contacts are adopted to ensure good electrical conductivity. Used for experiments, DIY, PCB circuits, etc
Mini DC-DC Adjustable Boost Module:DC 2-24V input,output 5V-28V,connected with USB power adapter and get 9V 12V 18V 24V voltge. with under-voltage lockout, current limiting, and thermal overload protection
18650 Battery Charger Module:Charging Voltage: DC 4.2V; Charging Current: Max 1A; Discharging Current: Max. 2A; Input Voltage: DC 4.5V-8V ; Output Voltage: DC 4.3V-27V; Output Current: 5V 1.4A; 9V 0.8A; 12V 0.6A