1、 Synchronous rectification scheme, wide voltage, high current, high efficiency. 2、 With terminal blocks and DC plug, easy to use. 3、 4 USB output ports, all with fast charging identification chip. 4、 With solid aluminum shell for better protection and easy use. 5、 With input reverse connection protection, output short circuit protection. Features: 1. Synchronous rectification scheme, wide voltage, high current, high efficiency. 2. With terminal blocks and DC plug, easy to use. 3. 4 USB output ports, all with fast charging identification chip. 4. With solid aluminum shell for better protection and easy use. 5. With input reverse connection protection, output short circuit protection. Specification: Input voltage: DC 9V--36V Output Voltage: 5.2V/5A/25W (total output current of 4 USB ports) Output Capacity:    9~24V Input: Output 5.2V/6A/30W    24~32V Input: Output 5.2V/5A/25W    32~36V Input: Output 5.2V/ 3.5A/18W Size: 70x40x30mm / 2.8x 1.6x 1.2in Weight: 57g   Package List: 1 x Step Down Power Supply Module 1 x Aluminum Shell   Note:  1. Not to say that the power module has 5A current, there will be 5A current charge to the phone. The size of the charging current is determined by the power supply IC inside the phone. 2. Why the output is 5.2V instead of 5V? Because taking into account that the charge line has 0.2- 0.3V pressure drop, if the phone inside the voltage is only 4.7V, then its charge management software to detect the input voltage is less than 5V will open the slow charge mode. The output voltage at 5.2V, it will not appear above this situation.