300W 20A DC-DC Buck Converter Step Down Module Constant Current LED Driver Power Step Down Voltage Module Electrolytic Capacitor

Ok

Ok

Works 100% Radiator for 4 kW is too small!

Works well, for a battery charger over 6A, fan cooling is needed. A week later one stopped working, nothing burned out, it just stopped.

Thank you! The order took a long time, but the product fully met expectations. Well packaged, no damage. Fully corresponds to the description. Sincerely grateful

The product is full of ..... Just plugged it in, after 5 seconds the device burned out. I don't know if the seller is to blame or not. But the product itself is of very poor quality

The voltage regulator does not work, I wanted to replace it, even the new one does not work, in the absence of a resistor, it works

the module is absolutely working, but for my work I used radiators of a different size and a cooler in addition

The product is defective, it doesn't work. Voltage is not supplied to it, the switch doesn't respond. Very disappointed.

The converter is defective, it cannot handle a 3A load with a 12v input, the output drops to 10v.

I received everything, not the first to order. Thank you for the work done.

Everything received in good condition, checked everything, it all works. Thank you all for your hard work!

This is not the first order I have made. Thank you for the work done.

everything arrived on time. checked, everything works. great

compact working, thank you.

works flawlessly

I recommend the seller

happy with the product

The product is OK!

Great