10–80% charging time
The minutes needed to fast-charge from 10% to 80% battery, a comparable measure of real DC charging speed.
The 10–80% time answers a road-trip question: arriving with a low battery, how many minutes until you can usefully leave? CarPairly lists it as a spec because charging slows near the top. The Australian Government says charging the final 20% is generally slower, and the US Department of Energy says most batteries reduce power in the 80–100% range.
It is a better comparison than peak kW because it covers the whole charging curve, taper included. A car with a lower peak but a flatter curve can post a better 10–80% time than a rival with a higher headline figure.
Two cautions when comparing. First, the window is percentages, not energy: 10–80% of a big battery is more kWh, and more added range, than the same window on a small one, so read the time together with usable battery capacity. Second, the Australian Government says the power actually achieved may be limited by the vehicle, the network or the number of vehicles charging at once, and that battery temperature affects charging speed, so quoted times will not always match a real stop.