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This Type-C USB Input High Current 3A Polymer Ternary Lithium Battery Quick Fast Charging Board, equipped with the IP2312 main control chip, is designed for efficient and controlled lithium battery charging. It offers flexibility in charging currents and cut-off voltages, making it suitable for a variety of applications where fast and reliable battery charging is essential.Note: Not suitable for 3.2V lithium iron phosphate batteries.Features:The IP2312 uses a full CC/CV charging mode.When the battery voltage is lower than 3V, it enters the trickle charge mode and charges the battery with a charge current of 100mA.When the battery voltage is greater than 3V, enter the constant current charging mode to charge the battery with the set constant current charging current.When the battery voltage is close to 4.2V and the charging current is less than 300mA, it enters the constant voltage charging mode. After entering the constant voltage mode, the charging is stopped after every 4 minutes, and the battery voltage is detected to be higher than 4.15V: if it is higher than 4.15V, the charging is stopped; otherwise, the charging is continued, and then the detection is performed after 4 minutes.When the battery is fully charged, if it detects that the battery voltage is lower than 4.1V, it will turn on to charge the battery.Specifications:Main Control Chip: IP2312Charging Mode: Full CC/CV charging modeInput Voltage Range: 4.5V to 5.5VDefault Charging Current: 3AInput Connector: Type-C USBCharge Cut-off Voltage Options: 4.2V or 4.35VIndicator Lights:Work Indicator: RedFull Charge Indicator: BlueDimension: 34.5mm x 15mmPackage Includes:1 x Type-C USB Input High Current 3A Polymer Ternary Lithium Battery Quick Fast Charging Board IP2312 CC/CV Mode 5V To 4.2V