Back in 2020 I bought a very similar unit that was 40 amps and adjustable. It was marketed by a company called SimplyWorks. After about a year the unit no longer would power up. And the company no longer offered it or was on Amazon any longer, so no way to return it. I still have it in my garage. The cables seem quite good but the electronics just don't light up or charge.

So to replace the unit I bought a new 32 amp Morec unit similar to this one off eBay.

One thing I noticed immediately was the new unit only had a wire size of 6mm2. The old 40 amp unit was 8mm2. When charging my Bolt, the cable of the new unit gets pretty warm. Next time I charge I will measure the temperature with a IR thermometer of the cable and the pins of the charge port. If they are too warm, I guess I will discontinue using it. It would be disappointing to have to toss two units in just 3 years. Especially since I don't drive that much and thus don't charge on a regular basis.