SUPERNIGHT Voltage Reducer DC 48V to 12V 30A 360W Step Down Converter, IP68 Waterproof, 30A Current Rating, DC Power Supply

Todo bien , se lo puse a una bicicleta electrica, su batería es de 48v 15A .Y se lo puse para poder poner focos de 12v para manejar de noche, ya llevo 2 semanas y todo muy bien.

Product is built well and works fine.Had a little confusion between the website and the product markings. The web shows the yellow and black as the feed and the red black to the output. The device label shows the opposite. I was able to figure out the device marking was correct

This is a great 12 volt reducer but beware of one issue. There are no instructions with the item. There is a label on the bottom but there is also a wiring schematic on one of the pictures shown of the item. And the two don’t match. The label on the product is correct but the schematic pic is wrong. I used the schematic and fried my first. I didn’t notice the difference and had already mounted the reducer. So I used the schematic to review the wiring and ended up feeding 48V to the 12V pair. Needless to say, it didn’t end well.

I'd give ZERO stars if I could. Unfortunately the picture showing how to wire the inputs and outputs is wrong. The schematic shows yellow and black are the inputs when it's the opposite....the Red and Black are inputs and the yellow and black are outputs. Returning this unit and unfortunately this mistake fried my Rock LED Lights and both my headlights and taillights. It's a $275 mistake and there is nothing I can do but replace my lights....I wish I could get more than my $25 back for this item. Bad Bad Bad