Kia EV9: Home Charging Time and Cost

A Kia EV9 charges at home for roughly twelve dollarsfor a typical 10-to-80-percent top-up on the big 99.8 kWh pack, and it does it overnight. The number that sets the speed is the car's onboard AC charger: the EV9 accepts up to about 11 kW, or 48 amps, so a charger rated higher adds nothing at home. Here is the time, the cost and the charger that fits the EV9's J1772 home port - with the arithmetic shown.

The 48-amp ceiling is the car, not the charger

The EV9 rides on Kia's 800-volt E-GMP platform, which is built for very fast DC charging on a road trip. At home on AC, though, it is limited by its onboard charger to roughly 11 kW (about 48 amps at 240 volts). That cap lives in the car. Feed it from an 80-amp commercial unit and it still draws 48; buy a 40-amp charger and you leave a little speed on the table. Because the battery is large, the sweet spot is a full 48-amp charger on a 60-amp circuit - see our best 48-amp chargers.

How long it takes

At the full 11 kW, the EV9 adds roughly 28 to 33 miles of range per hour, a little slower per hour than a small EV because the three-row SUV is heavier and less efficient. The big pack means a full charge is a long, overnight affair - but a daily top-up rarely is.

Plugged in every night, the EV9 is simply full every morning. The empty-to-full figure only matters before a road trip, and even then you would top up on DC on the way rather than wait at home.

What it costs

Cost follows the same formula as any EV: energy into the battery, divided by ~0.90 for charging losses, times your electricity rate. For an EV9 refilled 10 to 80 percent (~70 kWh into the pack):

• Energy drawn from the wall: 70 / 0.90 = ~77.8 kWh
• At the US average of about $0.16/kWh: 77.8 x $0.16 = about $12.45
• Cost per mile at ~2.8 mi/kWh: about 5.7 cents, or ~$5.70 per 100 miles

Your electricity rate is the whole story - it varies widely by state and utility, and charging overnight on a time-of-use plan can cut it further. Run your own numbers below, then see off-peak charging for how to pay the lowest rate on a pack this size.

The charger: a J1772 port at home

For home AC charging the EV9 uses a J1772 connector (the AC portion of its CCS port), so any standard Level 2 J1772 charger plugs straight in - no adapter needed. Given the large battery, a 48-amp unit on a 60-amp circuit is worth the install; the value pick is the Emporia Level 2, and the rugged option is the Grizzl-E Ultimate. If you also road-trip on Tesla Superchargers, that is handled by Kia's separate NACS DC adapter and the car, not by your home charger - see the NACS transition explainer.