What EV Charger Do You Need for a 2022 Mercedes-Benz AMG EQS?
A full charge takes 12.7 hours at maximum Level 2 speed. That duration fits easily into a standard overnight window. You need a 40 amp Level 2 setup to hit that speed. Plugging into a basic 120 volt wall outlet takes 85 hours, which is far too slow.
The numbers
| Maximum AC charging rate | 9.6 kW (40 A) |
|---|---|
| Charger size to buy | 40 A |
| Circuit breaker required | 50 A |
| Outlet / connection | NEMA 14-50 outlet |
| Charge port | J1772 |
| Full charge on Level 2 | about 12.7 hours |
| Range added per hour (Level 2) | about 22 miles |
| Full charge on a 120 V outlet | about 85 hours |
| Range added per hour (120 V) | about 3.3 miles |
| EPA rated range | 277 miles |
| Energy for a full charge | about 121.8 kWh at the wall |
Why 40 amps and not more
Your car draws 40 amps maximum. Buying a 48 amp or 50 amp charger will not speed up your charging time at all. The onboard charger caps power draw at 9.6 kW. Feed it more current and the car ignores the excess. Stick strictly to the recommended 40 amp hardware. Match the equipment to the vehicle limit and save your money.
What the install involves
You need a 50 amp breaker to supply your charging equipment safely. The circuit connects to a NEMA 14-50 outlet. Hardwiring is another valid option if you prefer a permanent setup outdoors or in the garage. Call an electrician to inspect your panel and run heavy gauge wire. Do not attempt high amperage wiring yourself unless you hold a license.
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
- What connector does this car use?
- The vehicle uses a J1772 connector for standard Level 2 home charging. Every non-Tesla EV sold in North America through 2024 uses this exact standard.
- Can I use a Level 1 household outlet?
- You can plug into a standard household outlet in an emergency. Expect a crawl rate of 3.3 miles per hour and 85 hours for a complete fill.
- How many miles of range do I get per hour?
- Your Level 2 setup delivers 22 miles of range for every hour plugged in. That rate matches the EPA rated mph figure.
- Do I need to buy a hardwired charger?
- You can use a plug-in unit connected to a NEMA 14-50 outlet. Hardwiring is also acceptable if you want a permanent garage fixture.
Other vehicles
Charging times derived from EPA data for the 2022 Mercedes-Benz AMG EQS. Electrical requirements follow NEC 625.41, which sizes a circuit at 125% of a continuous load. Always have a licensed electrician verify your panel.