I didn’t even think about the quality of the terminal.Wire gauges are standard, but terminals vary and so crimpers may not fit as desired.
"UL Listed" is only for a specific terminal and tool/die which were all tested together.
DIY is going to involve some trial and error, especially when no-name tools and components are used.
When a hydraulic tool with half a dozen die can be had for $60, vs. a name brand tool for as much as $3000 and die (not included) costing $300 each, some compromises may be tolerable.
Never having done this before, I purchased a cheapie kit of 160 Chinese tinned copper lugs but they may be thinner than higher-quality lugs.
If anyone has recommendations on 2/0 lugs that have worked well for them in a hydraulic crimper, I’d appreciate a link.
I’d rather figure out how to successfully use a cheap hydraulic crimper with high-quality lugs than to figure out how to successfully use cheap low-quality lugs with a high-quality crimper...