Input Connector:20pcs TC4056 Type C USB Female which can be used directly as input to charge the lithium battery with a mobile phone charger.
Input voltage: 4.35-6V (recommended voltage 5V); Charging voltage: 4.2V +/-1%; Battery overcharge protection voltage: 4.28V; Battery overcharging strength: 4.00V; Battery: over current protection current 3A.
Light status: no light when no load, red light when charging, green light when full. Note: charging with 5V when the battery is first connected will activate the protection circuit.
18650 Battery Holder Cable:All 18650 battery holders with cables are tin plated, black and red two wire design is great for easy soldering and connecting.
Package includes: 4 x 18650 battery compartment; 20 x Type-C charging module.