What EV Charger Do You Need for a 2024 Mercedes-Benz EQB 250?
Plugging your EQB 250 into a Level 2 setup takes 8.2 hours to reach a full battery from empty. That span easily fits into a standard overnight window. You will add 31 miles of range for every hour plugged in. Total range sits at 251 miles on a full charge.
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 a maximum of 40 amps on AC power. Buying a 40 amp charging unit fills the onboard charger at its peak rate without wasting money on higher capacity hardware. If you connect this car to a 48 amp or 50 amp supply, the vehicle limits the draw to 40 amps anyway. The battery capacity is 79.0 kWh, requiring a steady 9.6 kW delivery speed to hit that 8.2 hour turnaround. Anything smaller than 40 amps stretches out your plug-in time.
What the install involves
A 50 amp breaker is required to handle the electrical load safely. Have an electrician pull heavy copper wire to a NEMA 14-50 outlet on your garage wall. The electrician must check your main panel to verify spare capacity before landing the new breaker. Hardwiring is also an option if you prefer to bypass the plug entirely.
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
- Can I use a standard wall outlet?
- Yes, but Level 1 charging on a standard household outlet takes 55 hours for a full charge. You get only 4.6 miles of range per hour that way. Most drivers upgrade to Level 2.
- What connector does this car use?
- The car uses a J1772 connector for home AC charging. Every non-Tesla EV sold in North America through 2024 uses this standard.
- What charging hardware works best?
- Units like the Grizzl-E Classic 40A and ChargePoint Home Flex NEMA 14-50 match your car's 40 amp limit. Both plug directly into a 14-50 outlet.
- Does the EPA charge time differ?
- The EPA rates the full charge time at 8.2 hours with a delivery rate of 30 miles per hour. That matches the peak onboard capability of your vehicle.
Other vehicles
Charging times derived from EPA data for the 2024 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.