What EV Charger Do You Need for a 2024 GMC Hummer EV SUV?
A full charge takes 10.4 hours on a Level 2 setup. That timeline easily finishes overnight while you sleep. Your battery holds 199.1 kWh to cover 314 miles of range.
The numbers
| Maximum AC charging rate | 19.2 kW (80 A) |
|---|---|
| Charger size to buy | 80 A |
| Circuit breaker required | 100 A |
| Outlet / connection | hardwired only |
| Charge port | J1772 |
| Full charge on Level 2 | about 10.4 hours |
| Range added per hour (Level 2) | about 30 miles |
| Full charge on a 120 V outlet | about 138 hours |
| Range added per hour (120 V) | about 2.3 miles |
| EPA rated range | 314 miles |
| Energy for a full charge | about 199.1 kWh at the wall |
Why 80 amps and not more
The SUV accepts up to 80 amps through its onboard charger. To reach that peak speed, you need an 80 amp Level 2 supply. Feeding it less amperage means longer charge times because the vehicle cannot draw power faster than its onboard limit. Dropping down to smaller units like 48 amps or 50 amps will still charge the battery, but you lose the maximum replenishment rate.
What the install involves
Hardwiring is the only option here since no standard outlet handles this load. Have a licensed electrician pull a 100 amp circuit and land it on a matching breaker in your panel. They must verify your electrical service has spare capacity before tying in heavy loads. The unit connects directly to the wiring without a plug.
Chargers that match this car
The first unit matches your car's full 80 A. The others are slightly slower but cost less.
One of the few home units that can feed an 80 A car. Needs a 100 A circuit.
Adjustable from 16 A to 50 A in the app, which helps if your panel is tight.
Energy monitoring built in. Hardwire it for the full 48 A.
Worth having as well
Common questions
- Can I use a standard wall outlet?
- Level 1 charging on a standard household outlet takes 138 hours for a full tank. That yields only 2.3 miles of range per hour, which is far too slow for daily driving.
- What connector does the car use?
- It uses a J1772 connector for standard AC Level 2 equipment. Every non Tesla EV sold in North America through 2024 relies on this plug format.
- Do I need a special adapter for Tesla stations?
- An adapter lets your vehicle use Tesla Destination Chargers and Wall Connectors. Units rated for 80 amps keep pace with your high capacity onboard charger.
- What is the EPA rated charge time?
- The EPA test estimates a full charge takes 10.5 hours. That adds 30 miles of range per hour under standard testing conditions.
Other vehicles
Charging times derived from EPA data for the 2024 GMC Hummer EV SUV (covering 4 EPA trim listings). Electrical requirements follow NEC 625.41, which sizes a circuit at 125% of a continuous load. Always have a licensed electrician verify your panel.