Description: Battery type: 3.7V battery (collection or 18650 lithium battery) single-section parallel, capacity is not limited, the larger the capacity, the longer the charging and discharging time. Press the key: The button lasts longer than 60ms, but less than 2s, which means short press. Short press will turn on the power indicator and boost output. Pressing 10s for a long time resets the whole system. The button action less than 30ms will not respond. Mobile phone insertion automatic detection function: IP5328P automatically detects the insertion of the mobile phone, instantly wakes up from the standby state, turns on the boost 5V to charge the mobile phone, saves the button operation, and the no-button solution. The built-in soft start function prevents the inrush current caused by excessive startup, causing faults, integrated output overcurrent, short circuit, overvoltage, over temperature and other protection functions to ensure stable and reliable operation of the system. Fast charge indication: input and output high voltage fast charge indicator. Specification: Support 5V~12V wide voltage range output, load capacity is 5V-3.1A, 7V-2.4A, 9V-2.0A, 12V-1.5A. Switching frequency 375KHz Size: 65x32.5mm/2.56x1.26in Conversion efficiency: 95% Package Includes: 1pc Bidirectional Fast Charging Module(2 Pack) Note: The IP5328P automatically adjusts the charging current to accommodate adapters with different load capacities. The IP5328P does not support the same charging and discharging. In the charging state, the output discharge port is turned off to prevent the input high voltage from damaging the charged device. The safety should be added to the protection board, the motherboard has positive and negative points, the battery is not available reversing, the anti-burning motherboard is at your own risk! ! !