AITRIP 6PCS USB DC-DC Charging Step-Down Voltage Regulator Power Supply Module 9V/12V/24V to 5V 3A DC Dual USB Output Buck Voltage Board Converter for Fast Charging and Household Power System by Amazon.co.uk

• The input voltage range of mobile power supply boost module is DC6V-26V, output voltage range is DC5.2V, and output current range is 3A.

• High Efficiency: The boost converter module is with high conversion efficiency up to 98%. (The higher the input voltage, the higher the efficiency)

• A wide range of applications: DC-DC step down voltage converter module compatible with many phone models. This module can be applied to mobile phone charging, car charging retrofit, driving recorder power supply, household power supply, intelligent plugging transformation, fast charging adapter, etc

• Super material: It is made of electronic accessories, nickel plating on surface(anti-oxidatioan), inner conductor: pure copper.it is long lasting and durable for you to use.

• Note : positive and negative can not be reversed, and the input voltage can not exceed 26V, otherwise it will lead to chip damage!