Review on ⚡️ DROK USB Load Tester: LD25 Electronic Load Resistor Module with Adjustable Constant Current, Intelligent Temperature Control, and Cooling Fan by Shawn Parker

Works very well. It comes with an easy-to-follow guide. I really like that it can be turned on and off without disconnecting from the network (this can be changed). In addition, the fan is not noisy. You can hear it, but it sounds like a fan in a small laptop; audible, but you can easily forget it even if it's literally 2 feet away from you. The Micro-USB and USB-C ports are my favorite feature. Since this thing is so bulky, plugging it in directly isn't the best idea. So being able to use existing cables that everyone has is amazing. There are also small nylon feet to keep the hot MOSFETs from burning your desk. This also seems to be fairly accurate. It also tells you input voltage and input power, which is nice, but it doesn't track watt-hours, so you'll need one of those USB analyzers to fully test something like a power bank. However, I can't complain about the low price.