Tesla · 2021–2026
Model 3 RWD
Perfect for daily commuting. Here's what its onboard charger actually needs from your home's electrical panel.
Home (Level 2) charging facts
Pulled straight from the Model 3 RWD's onboard charger rating - not a generic EV number.
- Onboard charger draw
- 11.5 kW
- ~48A at 240V (kW × 1000 ÷ 240)
- Empty-to-full at max Level 2
- 5.0 hrs
- 57.5 kWh battery ÷ 11.5 kW
- Range added per hour
- ~48 mi/hr
- 11.5 kW × 4.2 mi/kWh efficiency
- DC fast charging
- 170 kW max
- Public chargers only - tapers as the battery fills
Typical full-speed install
48A charger on a 60A circuit
Reaches this car's 11.5 kW ceiling. Whether your panel has room for that circuit depends on everything else already on it - that's the actual assessment.
Connector
Tesla
This car uses Tesla's proprietary connector. Home Level 2 charging still runs through a standard 240V circuit - the connector only affects which cable or adapter you plug in.
On the Model 3 RWD specifically, that connector carries up to 11.5 kW at home on Level 2 and up to 170 kW on public DC fast hardware.
Charging speed by circuit size
The Tesla Model 3's onboard charger can't use more than 11.5 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 | ~16 mi | ~128 mi |
| 24A | 5.8 kW | ~24 mi | ~192 mi |
| 32A | 7.7 kW | ~32 mi | ~256 mi |
| 40A | 9.6 kW | ~40 mi | ~320 mi |
| 48A | 11.5 kWcapped by car | ~48 mi | ~384 mi |
Overnight, at full onboard speed
384 mi / 8 hrs
480 mi across a 10-hour window, at 11.5 kW.
Approximate cost to fill from empty
$7.48
Assumes $0.13/kWh (a national-average estimate, not your local rate) × 57.5 kWh - about $0.031/mile.
Tesla Model 3 charging questions
How long does it take to charge a 2021–2026 Tesla Model 3 RWD on a Level 2 charger?
About 5.0 hours from empty to full at its 11.5 kW onboard-charger ceiling (57.5 kWh battery ÷ 11.5 kW).
Times scale with amperage - see the circuit-size table above for other settings.
What amperage does a Tesla Model 3 draw on Level 2?
At its full 11.5 kW rate, the Tesla Model 3 draws about 48A at 240V (kW × 1000 ÷ 240 = amps).
Can a Tesla Model 3 use a 48-amp charger?
Not to any real benefit. The Tesla Model 3's onboard charger tops out at 11.5 kW (~48A) - a 48A charger doesn't charge it any faster than one already sized to 48A.
How much range does a Tesla Model 3 add per hour on a Level 2 charger?
About 48 miles of range per hour at its 11.5 kW ceiling (11.5 kW × 4.2 mi/kWh efficiency).
How much range does an 8-hour overnight charge add to a Tesla Model 3?
Roughly 384 miles from an 8-hour overnight charge (48 mi/hr × 8 hours), or about 480 miles across a 10-hour window.
What's the DC fast charging ceiling for a Tesla Model 3?
Up to 170 kW on a public DC fast charger - well above its 11.5 kW Level 2 (home) ceiling, though DC fast rates taper as the battery fills.
Other Tesla 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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