What EV Charger Do You Need for a 2022 Mercedes-Benz EQB 350?
Wiring a 50 amp breaker and a NEMA 14-50 outlet is mandatory to charge your car at full speed. You will need a qualified electrician to run the heavy gauge wire from your main panel. Skip the low power gear and stick to a 40 amp Level 2 setup. Your vehicle takes 8.3 hours to refill completely.
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 8.3 hours |
| Range added per hour (Level 2) | about 27 miles |
| Full charge on a 120 V outlet | about 55 hours |
| Range added per hour (120 V) | about 4.1 miles |
| EPA rated range | 227 miles |
| Energy for a full charge | about 79.5 kWh at the wall |
Why 40 amps and not more
Your car accepts a maximum draw of 40 amps at 9.6 kW. Buying a larger charging unit will not speed up the process because the onboard charger limits the intake. Feeding it 40 amps adds 27 miles of range every single hour. Anything smaller leaves untapped capacity on the table and slows down your daily routine. Stick strictly to the manufacturer limit.
What the install involves
A 50 amp breaker is required to handle the electrical load safely. You can plug a unit like the ChargePoint Home Flex into a NEMA 14-50 outlet or hardwire the connection directly. Hire a licensed electrician for the wiring work. Panel capacity matters here, so check your home service before buying parts.
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 my car use?
- Your vehicle uses a standard J1772 connector for all AC Level 2 charging sessions. Every non Tesla electric vehicle sold in North America through 2024 relies on this plug format.
- Can I use standard household plugs?
- You can plug into a standard 120 volt outlet for Level 1 power. That method takes 55 hours for a full tank and adds only 4.1 miles of range per hour.
- How fast is the EPA rated charge time?
- The EPA test estimates a full charge takes 8.2 hours at 28 miles of range per hour. Real world results depend on your exact utility supply and temperature.
- What charging hardware works best?
- The Grizzl-E Classic 40A, Grizzl-E Mini Portable, and ChargePoint Home Flex all match your 40 amp maximum requirement. They plug directly into your NEMA 14-50 outlet.
Other vehicles
Charging times derived from EPA data for the 2022 Mercedes-Benz EQB 350. Electrical requirements follow NEC 625.41, which sizes a circuit at 125% of a continuous load. Always have a licensed electrician verify your panel.