What EV Charger Do You Need for a 2024 Mercedes-Benz AMG EQS?
Forty amps is the target. Your car draws 40 amps maximum on a Level 2 supply. Plug it into a 50 amp breaker and feed the battery overnight. The car takes 13.0 hours to fill an empty 125.0 kWh pack.
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 13.0 hours |
| Range added per hour (Level 2) | about 23 miles |
| Full charge on a 120 V outlet | about 87 hours |
| Range added per hour (120 V) | about 3.5 miles |
| EPA rated range | 305 miles |
| Energy for a full charge | about 125.0 kWh at the wall |
Why 40 amps and not more
The onboard charger maxes out at 9.6 kW, meaning a larger 48 amp or 80 amp supply provides zero speed gain. Your vehicle cannot draw more power than its internal hardware allows. Buying a bigger charger wastes money. Stick to the 40 amp recommendation and gain 23 miles of range every hour. The EPA test logs a slightly faster 12.8 hours because standard drive cycles rarely run the battery completely to zero before plugging in.
What the install involves
You need a dedicated 50 amp breaker paired with heavy gauge wiring to handle the continuous load. Connect the circuit to a NEMA 14-50 outlet. Hardwiring works too, but plug in units like the Grizzl-E Classic 40A give you straightforward disconnect capability. Call a licensed electrician if your panel lacks physical space or if the wire run requires heavy conduit work through finished walls.
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 plug does this car use?
- It uses a J1772 connector for all Level 2 home charging. Every non Tesla EV sold in North America through 2024 uses this standard.
- Can I use a standard wall outlet?
- Yes, but Level 1 charging on a standard household outlet takes 87 hours for a full refill. You get 3.5 miles of range per hour.
- Do I need a 40 amp charger?
- Yes, because your car requires a 40 amp maximum onboard charger. Matching this exact amperage gives you the fastest possible home AC speeds.
- Which chargers work with this setup?
- Units like the Grizzl-E Classic 40A, Grizzl-E Mini Portable, and Home Flex NEMA 14-50 plug directly into your required outlet.
Other vehicles
Charging times derived from EPA data for the 2024 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.