Cllena DC/DC 12V to 19V Boost Converter 20A 480W Step Up Voltage Regulator Module Car Power Supply Voltage Transformer (Input 10V-16V)

Put out full watts. Does get warm but used small usb fan(Gaiatop USB Desk fan I got on Amazon) use to charge my solar generator a BLUETTI 180 at 480 watts using an external lifepo4 battery. Did not fade out or shut down. Love it.

Works really well, don’t buy this if you’re not going to put a fan on it, and pull 400+ watts

Bought this to convert 12v to 48v. The output is exactly 48v and 10amps. One thing I will say as a negative and why I took a star away from the review. As the unit starts to overheat it will reduce the output voltage. This unit MUST have active cooling. I burned one of these up and chalked that up to my fault. I put it in a confined space with zero airflow. Now that I have active cooling from a 12v pc fan (doesn’t take much). This has run flawlessly!

The converter works great. It puts out 48 Volt as expected. The input seems to be tolerant to higher voltages. I have used it on 15.5 Volt and it works great. My main issue is that it isn't able to deliver full power for a long time. Maybe a few minutes, then it gets too hot and it will throttle itself down to about half the output power. If you plan on using this converter to charge a power station like an Ecoflow or Bluetti, you will not be too happy with this. It will charge at almost 10 Amp at 48 Volt, but it will overheat quickly and drop to about 240 Watt. In other words, this device is fine for low power demands or when you need power only for short time. An a continuous power source, it doesn't work well.

It does not have too much noise from switching circuitry and voltage does not drop by increased current. Very happy with it

It worked great. I used it to charge an Anker portable battery pack. It did pull higher wattage than stated.

Watch out what you do with this thing. Specs were not correct. Thing pulled 57v at 30amps on me, 1710 watts. And it did it instantly. Not 57v 10Amps like it says. Melted my wiring and plug on my battery bank really fast. Luckily I was standing next to my battery bank when it happened and was able to shut it down before my batteries got damaged.

Mount this bad boy to a larger heat sink if you intend to run it at max output. Does what it says. Love it.