Hyundai Ioniq Electric (28 kWh) battery aging

I recently bought a used 2017 Hyundai Ioniq Electric (28 kWh), and wanted to know how much battery capacity remained. By measuring the amount of energy delivered by the battery when driving from fully-charged to near-empty, it seems like my 9-year-old battery still delivers 27.1 kWh, or 97% of the rated capacity of 28 kWh. . . . Read More: Hyundai Ioniq Electric (28 kWh) battery aging