What EV Charger Do You Need for a 2025 GMC Hummer EV SUV?
Wiring a home station for your 2025 GMC Hummer EV SUV requires a 100 amp circuit and hardwired equipment. You need a licensed electrician to pull heavy gauge wire, install a 100 amp breaker, and verify your main panel has spare capacity. The car accepts up to 80 amps of Level 2 charging.
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 10.5 hours |
| Range added per hour (Level 2) | about 30 miles |
| Full charge on a 120 V outlet | about 140 hours |
| Range added per hour (120 V) | about 2.3 miles |
| EPA rated range | 315 miles |
| Energy for a full charge | about 201.4 kWh at the wall |
Why 80 amps and not more
The 201.4 kWh battery demands an 80 amp onboard charger to refill in reasonable time. Plugging into a smaller 48 amp or 50 amp unit slows down the delivery. You get 30 miles of range per hour at the maximum 80 amp rate. Going smaller stretches a full session past the 10.5 hour mark. Feeding this large battery requires all the power your vehicle can accept.
What the install involves
Plug in units will not work for the peak rate. You must hardwire an 80 amp charger directly to the breaker. Your electrician will need to calculate continuous load limits on your electrical panel before landing the heavy wires. The unit must connect via a hardwire setup because plugs cannot handle 100 amp breakers safely. Check your panel space now.
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?
- No. Standard 120 volt outlets deliver a glacial 2.3 miles per hour and take 140 hours to fill the battery.
- What connector does the car use?
- The vehicle uses a J1772 connector. Many 2025+ vehicles ship with a NACS port but include a J1772 adapter, so a J1772 home charger still works. Confirm your car's port before buying.
- Why does the EPA charge time differ from the peak rate?
- The EPA test does not always run at the car's peak AC rate, which accounts for the minor variance in reported hours. Real world charging at the maximum rate takes 10.5 hours.
- Do I need an electrician for a hardwired setup?
- Yes. A 100 amp circuit requires professional load calculations and heavy wire routing to your main panel.
Other vehicles
Charging times derived from EPA data for the 2025 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.