What EV Charger Do You Need for a 2021 Kia Niro Electric?
Thirty-two amps is the maximum rate your car accepts on Level 2. A 40-amp circuit handles this load without strain. You will add 24 miles of range every hour. A full recharge takes 10.0 hours from empty.
The numbers
| Maximum AC charging rate | 7.2 kW (32 A) |
|---|---|
| Charger size to buy | 32 A |
| Circuit breaker required | 40 A |
| Outlet / connection | NEMA 14-50 outlet on a 40 A breaker, or hardwired |
| Charge port | J1772 |
| Full charge on Level 2 | about 10.0 hours |
| Range added per hour (Level 2) | about 24 miles |
| Full charge on a 120 V outlet | about 50 hours |
| Range added per hour (120 V) | about 4.8 miles |
| EPA rated range | 239 miles |
| Energy for a full charge | about 71.7 kWh at the wall |
Why 32 amps and not more
Your car has a 7.2 kW onboard charger. Buying a bigger 48-amp or 50-amp EVSE wastes money because the vehicle cannot draw that extra current. The car limits intake to 32 amps regardless of what the supply equipment provides. Feeding it more power yields zero speed gains. Stick to a 32-amp or 40-amp supply setup.
What the install involves
Wiring requires a NEMA 14-50 outlet on a 40 A breaker, or hardwiring. High-amperage continuous loads create significant heat in residential wiring. Hire a licensed electrician to run the heavy-gauge copper conductors from your main panel to the garage wall. Never trust a cheap plastic outlet store brand for heavy EV loads.
Chargers that match this car
Rugged metal enclosure, built for outdoor use.
Portable cordset. Works on 120 V or a 240 V outlet.
Plugs into an existing 14-50 outlet, no hardwiring.
Worth having as well
Common questions
- Can I plug this into a standard household wall outlet?
- Level 1 charging uses a standard 120-volt household outlet. That method takes 50 hours for a complete fill and adds 4.8 miles of range per hour.
- What plug type does the car use?
- The charge port accepts a J1772 connector. Every non-Tesla EV sold in North America through 2024 uses this connector for AC Level 2 charging.
- Why does the EPA charge time differ from the max rate?
- The EPA test does not always run at the car's peak AC rate due to testing protocols and power conversion losses. Expect the 10.0 hour timeline at maximum Level 2 output.
- How much range does the battery hold?
- The pack holds 71.7 kWh of energy. This total delivers an EPA range of 239 miles based on an efficiency rate of 30.0 kWh per 100 miles.
Other vehicles
Charging times derived from EPA data for the 2021 Kia Niro Electric. Electrical requirements follow NEC 625.41, which sizes a circuit at 125% of a continuous load. Always have a licensed electrician verify your panel.