Features 1、This is a great 400W DC to DC step‑up power supply module for electric equipment, digital products, laptop, etc 2、Input and output are designed with screw terminals for convenient wire connection and disconnection 3、High efficiency, the maximum conversion efficiency can be 96% and efficiency is related to input/output voltage, current and voltage difference 4、There are 2 heat sinks that would ensure a better heat dissipation 5、It can also be used as a driver for high power LED lights or voltage regulator for solar panels Specification Features: This is a great 400W DC to DC step-up power supply module for electric equipment, digital products, laptop, etc. Input and output are designed with screw terminals for convenient wire connection and disconnection. There are 2 heat sinks that would ensure a better heat dissipation. Specifications: Type: Non-isolated boost module Max. Input Current: 15A (please enhance heat dissipation if more than 8A) Quiescent Current: 10mA(will increase when convert 12V to 20V) Constant Current Range: 0.2A to 12A Operating Temperature: -40℃ to 85℃(if temperature is too high, please enhance heat dissipation) Frequency: 150KHz Reverse Input Protection: No Size: 67 x 48 x 28mm / 2.63 x 1.89 x 1.1" 2, Adjust "CC-ADJ" potentiometer counterclockwise about 30 circles to minimize the output current before connecting to load(clockwise to increase current, counterclockwise to reduce current). Then adjust "CC-ADJ" clockwise to the current value you need. If you use the module for battery charging, connect to output after battery is fully discharged. Because if the more energy is left in battery, the less charging current will be. Package Includes: 1 x Module Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Package List