What EV Charger Do You Need for a 2025 Mercedes-Benz EQB 250?
You need a 40 amp Level 2 home charger for your Mercedes-Benz EQB 250. The car draws a maximum of 9.6 kW, which caps charging speed regardless of what a larger supply can deliver. A full battery takes 8.2 hours at this rate.
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 8.2 hours |
| Range added per hour (Level 2) | about 31 miles |
| Full charge on a 120 V outlet | about 55 hours |
| Range added per hour (120 V) | about 4.6 miles |
| EPA rated range | 251 miles |
| Energy for a full charge | about 79.0 kWh at the wall |
Why 40 amps and not more
Your car accepts up to 40 amps because its onboard charger is built to handle that specific limit. Buying a 48 amp or 80 amp supply will not speed up the charge time at all. The vehicle ignores the extra current. Stick with the recommended 40 amp rating to match the onboard hardware. Pushing more power into the car is impossible.
What the install involves
You need a 50 amp breaker to supply the circuit safely. Pair that breaker with a NEMA 14-50 outlet near where you park. Hardwiring is also an option if you prefer a permanent setup without a plug. Call a licensed electrician to verify your home panel can handle the load before installation.
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 the car use?
- It uses a J1772 connector. This model year falls in the industry transition, so confirm your specific port before buying.
- How fast does Level 1 charging go?
- Level 1 adds 4.6 miles of range per hour. A full charge takes 55 hours using a standard household outlet.
- What is the EPA rated charge time?
- The EPA rating lists 8.2 hours for a full charge at 30 miles of range per hour. Peak Level 2 performance reaches 31 miles of range per hour.
- What is the total battery capacity?
- The battery pack holds 79.0 kWh of energy. The car achieves 31.5 kWh per 100 miles with an efficiency rating of 107 MPGe.
Other vehicles
Charging times derived from EPA data for the 2025 Mercedes-Benz EQB 250. Electrical requirements follow NEC 625.41, which sizes a circuit at 125% of a continuous load. Always have a licensed electrician verify your panel.