Contact patch or area, look at the skinny material around the ring hole, and consider how thin that material is...
Then look at the material at the wire barrel and consider how thin that is.
Then look how narrow & thin the material is between the ring & barrel,
That thin & narrow strip can't possibly conduct the amperage a battery can dump, so there is no way that amperage can get to the wire/cable.
That thin/skinny strip is an amperage limiter, and if you attempt to pull full amperage through it, it will overheat and burn like a fuse.
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Now, look at this lug, the MUCH thicker material conducts more amperage, the wider connection between ring & barrel conducts more amperage, the wider material around the ring contacts more of the battery terminal which transfers more amperage.
There is a reason I recommend the big, heavy, SOLID lugs for batteries and high amperage inverters, they will conduct full amperage simply because of the VOLUME of material in the lugs,
Flattened tubings lugs are still thin wall, but at least they aren't cut away like the flat strip terminals on top are.
You have a big, high volume conductor wire in the cable, you NEED a big high volume conductor on the ends when transmitting 100 to 300 Amps from battery to inverter.
I can find the 'Weak Links' when I full on load test,
I throw full amp load at the cables/terminals and look for heat (resistance makes heat) and sometimes the terminal ends just melt off simply because they can't handle the amp load.