This soldering is not a proper way – terminal should be crimped, but i don’t have crimping tool for that size so i use this solder pot as work around!.
2000W inverter in ideal condition at 12V should take about 2000W/12V = 166A but to be safe, have low voltage drop and make sure it will work at 10V (2000W/10V = 200A) + efficiency i decide to use 35mm2 copper cable.
The cheapest cable I found was a “welding negative ground cable” it was much more cheaper than cable dedicated to car audio amplifiers 🙂
Just make sure to mark red “positive end” 🙂
