BMW · 2022–2026
i4 M50
M performance electric. Here's what its onboard charger actually needs from your home's electrical panel.
Home (Level 2) charging facts
Pulled straight from the i4 M50's onboard charger rating - not a generic EV number.
- Onboard charger draw
- 11 kW
- ~46A at 240V (kW × 1000 ÷ 240)
- Empty-to-full at max Level 2
- 7.6 hrs
- 83.9 kWh battery ÷ 11 kW
- Range added per hour
- ~36 mi/hr
- 11 kW × 3.3 mi/kWh efficiency
- DC fast charging
- 200 kW max
- Public chargers only - tapers as the battery fills
Typical full-speed install
48A charger on a 60A circuit
Reaches this car's 11 kW ceiling. Whether your panel has room for that circuit depends on everything else already on it - that's the actual assessment.
Connector
NACS
NACS (North American Charging Standard, originally Tesla's plug) is now the connector most new EVs are shipping with for both home Level 2 and public DC fast charging.
On the i4 M50 specifically, that connector carries up to 11 kW at home on Level 2 and up to 200 kW on public DC fast hardware.
Charging speed by circuit size
The BMW i4's onboard charger can't use more than 11 kW AC no matter how big the circuit - past 48A, a bigger charger buys you nothing on this car.
| Charger setting | This car actually draws | Range added / hour | 8-hr overnight |
|---|---|---|---|
| 16A | 3.8 kW | ~13 mi | ~104 mi |
| 24A | 5.8 kW | ~19 mi | ~152 mi |
| 32A | 7.7 kW | ~25 mi | ~200 mi |
| 40A | 9.6 kW | ~32 mi | ~256 mi |
| 48A | 11.0 kWcapped by car | ~36 mi | ~288 mi |
Overnight, at full onboard speed
288 mi / 8 hrs
360 mi across a 10-hour window, at 11 kW.
Approximate cost to fill from empty
$10.91
Assumes $0.13/kWh (a national-average estimate, not your local rate) × 83.9 kWh - about $0.039/mile.
BMW i4 charging questions
How long does it take to charge a 2022–2026 BMW i4 M50 on a Level 2 charger?
About 7.6 hours from empty to full at its 11 kW onboard-charger ceiling (83.9 kWh battery ÷ 11 kW).
Times scale with amperage - see the circuit-size table above for other settings.
What amperage does a BMW i4 draw on Level 2?
At its full 11 kW rate, the BMW i4 draws about 46A at 240V (kW × 1000 ÷ 240 = amps).
Can a BMW i4 use a 48-amp charger?
Not to any real benefit. The BMW i4's onboard charger tops out at 11 kW (~46A) - a 48A charger doesn't charge it any faster than one already sized to 46A.
How much range does a BMW i4 add per hour on a Level 2 charger?
About 36 miles of range per hour at its 11 kW ceiling (11 kW × 3.3 mi/kWh efficiency).
How much range does an 8-hour overnight charge add to a BMW i4?
Roughly 288 miles from an 8-hour overnight charge (36 mi/hr × 8 hours), or about 360 miles across a 10-hour window.
What's the DC fast charging ceiling for a BMW i4?
Up to 200 kW on a public DC fast charger - well above its 11 kW Level 2 (home) ceiling, though DC fast rates taper as the battery fills.
Other BMW EVs
Will your panel handle this?
ChargeRight runs the full NEC load calculation against your actual panel - not a generic rule of thumb.
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