USB Type C 3A High Current IP2312 Polymer Ternary Lithium Battery Quick Fast Charging Board Charger Module Specification: Main control chip: IP2312 Input voltage: 4.5~5.5V Charging cut-off voltage: 4.2V Charging current: 3A (the current can be changed by adjusting the resistance) Indicator light: yes Warning: Not suitable for 3.2V lithium iron phosphate battery.