It didn't seem to work until I turned the knob all the way to the left (max voltage) and then to the right to turn off 7 volts with 5 volts in after a few seconds . mA where it worked well and stayed cool. I haven't tested it at higher currents yet. All 5 modules worked in the same way.
Portable Electric Vehicle Charger (40A, 240V, 25Ft Cable) - Level 2 EV Charging Station With NEMA 6-50P Plug-In For EVs By MUSTART
19 Review
MUSTART Level 2 EV Charger With 240V, 25Ft Cable, And Adjustable Amps (16/25/32) β Portable Electric Vehicle Charging Station With Delay Function And NEMA 14-50P Plug-In
29 Review
OEMTOOLS 24397 2.5 Gallon Manual Fluid Extractor Pump For Oil And Transmissions, With Oversized Handle For Easier Use And Extraction
23 Review
MUSTART Level 2 EV Charger With WiFi, 16/25/32 Amp Smart Electric Vehicle ETL Certified Indoor/Outdoor NEMA 6-50P 25Ft Cable
30 Review