Review on MakerHawk USB Load Tester - Intelligent Discharge Resistor Module for Battery Capacity Testing, Adjustable Constant Current, 150W 200V 20A by Todd Roybal

I think it's a good load tester and it's really handy, basically it's a big adjustable resistor with a screen. The big problem I have with this is a misperception of the accuracy of the voltage readings. It doesn't have an accuracy of 0.01V, it's more of a resolution of 0.08-0.15V. The picture shows that the multimeter readings are (correctly) off by 0.1V. It's one thing when the product was specified to be 0.1V accurate, but it's listed as 0.01V and that's not true. Another thing: Based on other reviews, this list was a much smaller load tester. This is a larger model with a pink horizontally oriented fan and heatsink. You can look it up on the MakerHawk website for confirmation.