Easy to install Enhanced power management Remote OTA firmware upgrade Programmable BACK-TO-AC auto power up Programmable sampling period I2C communication clock Support stackable battery design to expand battery capacity NOTE: Stacking power strips require special accessories. Can not support None official accessories. Specification features: Current/Voltage monitoring for power ports. Battery terminal current/voltage monitoring, support bidirectional charge and discharge monitoring. power estimation Note: At least one full charge and discharge cycle must be completed! Support , , SFCP fast charging protocol. Support BC1.2 charging protocol. Battery temperature monitoring Note: The forced temperature protection function cannot be turned off, the protection threshold: 65 degrees Programmable Power Supply Voltage Detector (PVD) function, default: 3.6V Incoming calls automatically start function. Power-off memory function. Programmable shutdown/forced restart. run time statistics Static Protection. Linear compensation range Discharge capacity: 5V 4.5A. Nonlinear compensation range Discharge capacity: 5V 8A. Charging capacity 4.5V 5A / 5V 2.5A / 9V 2A / 12V 1.5A. Use I2C communication without occupying other ports. Support 4.2V 4.35V 4.4V 4.5V lithium battery Colour:black Material:PCB Size:56 x 85mm Package Contents: 1 * Power Management Module Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.