Kia EV9 充電速度視乎版本而定。後驅標準版支援 180 kW 快充，Deluxe 同 GT-Line 版支援 240 kW 快充。用 350 kW 快充站，標準版由 10% 充到 80% 只需 20 分鐘，Deluxe 同 GT-Line 版約需 24 分鐘。用 11 kW 中速充電，標準版充滿約 7 小時，Deluxe 同 GT-Line 版約 9 小時。
Charging speeds of the Kia EV9 vary by variant. The Standard version supports 180 kW fast charging, while the Deluxe and GT-Line support 240 kW. Using a 350 kW ultra-fast charger, the Standard takes just 20 minutes to charge from 10% to 80%, while the Deluxe and GT-Line take about 24 minutes. With an 11 kW medium-speed charger, the Standard takes about 7 hours for a full charge, and the Deluxe and GT-Line about 9 hours.
