Features 1、Thermal Regulation: This charger module is thermally regulated so that it can maximize the rate without overheating. 2、Working Details: This charge module works under constant current, and constant voltage, preset charging voltage of 4.24V, accuracy of ±1%. 3、Automatic Charging: This charger module supports automatic charging, C/10 charge termination, 25μA supply current at shutdown, 2.9V trickle charge threshold, soft start to limit inrush current. 4、Scope of Application: This charger module can be used for 3.7V 18650 503035 603443 battery. 5、Ideal Replacement: This charger module with excellent performance can be easily used, ideal replacement for the old and damaged switch. Specification Item Type: Charger Module Material: PCB Power Supply: DC 5V Greater or Equal to 2A Charging Voltage: 4.24V (±1%) Protection: Protection for Reverse Connection of Battery Cells Charging Current: 500MA Working Ambient Temperature: -40°C to +85°C Package List 1 x Charger Module