Description: Complete Function: boosting,lithium battery charging,undervoltage protection,output short circuit protection,cellphone charge identifying circuit Charging and discharging indication Internally installed charging and discharging power MOS Preset 4.2V charging voltage, precision ±1% Max 8uA standby current Intelligent temperature control and overtemperature protection Integration output overvoltage protection,short coircuit protection,overload protection Integration overcharging and overdischarging protection Support trickle mode and zero voltage charging Specification: Supply Voltage : 3.7V~5.5V Model Number : Charger Module Type : Logic ICs Operating Temperature : -30-85 celsius Application : Power Modules Charging Current : 1A(max) BAT Discharging Stop Voltage : 2.9V Output Current:1A(max) Output voltage:5V Discharging Efficiency:85%(input 3.7V output 5V/1A) Size: Approx. 3.2x 1.4cm/ 1.26x 0.55inch Package Includes: 1 Piece Lithium Battery Charger Module Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement