Charging.The IP5328P has a constant current, constant voltage lithium battery charge management system that supports a synchronous switch structure. Different charging voltage specifications can be automatically matched. When the battery voltage is less than 3V, 250mA trickle charging is used; When the battery voltage is greater than 3V, enter the input constant current charging, battery end charging current 5.0A; When the battery voltage is close to the set battery voltage, enter the constant voltage charging; When the charging current at the battery end is less than 300mA and the battery voltage is close to the constant voltage, stop charging. After charging, if the battery voltage is lower than 4.1V, charge the battery again.The IP5328P automatically adjusts the charging current to accommodate adapters with different load capacities. The IP5328P does not support the same charge and discharge. In the charging state, the output discharge port is closed to prevent the input high voltage from damaging the charged device.boost: The IP5328P integrates a synchronous switch converter system that supports high voltage output, supports 5V12V wide voltage range output, and the load capacity is 5V - 3.1A, 7V - 2.4A, 9V - 2.0A, 12V - 1.5A. Switching frequency 375KHz. Built-in soft start function to prevent failure caused by excessive impulse current during startup, integrated output overcurrent, short circuit, overvoltage, overtemperature and other protection functions to ensure stable and reliable system work. The output current of the booster system can be automatically adjusted with the temperature to ensure that the IC temperature is below the set temperature.Package included: 2pcs IP5328P Dual USB Battery Step-Up Power Bank Bidirectional 18W Fast Charging Module Mobile Power Motherboard 3.7V to 5V9V12V Boost Voltage QC3.0 FCP AFC MET SFCP Quick Charge Type-C