An electric SUV with a large battery can usually go from low to full overnight on a 48 A Level 2 charger. Divide the energy you need by the charging power, then allow some extra time for losses and the slower final few percent. On the EV-ACT5006T at 48 A, that means roughly 11 kW of charging, so a big SUV pack refills in well under a working day, and most daily top-ups take two or three hours.
Key Takeaways
- Time is roughly kWh needed divided by charger kW, plus about 10%.
- At 48 A, a large SUV pack refills overnight; daily top-ups take a few hours.
- The car’s onboard charger can cap the speed below the wall unit’s rating.
The Simple Formula
Charging time in hours is roughly the energy needed in kWh divided by the charging power in kW. Real sessions take a little longer because some energy is lost as heat in the charger, cable and car, and because many cars slow down near 100%. A common rule of thumb is to add about 10% to the result. The car’s onboard charger also sets a cap: if it accepts only 11 kW, a higher-rated wall unit will not go faster.
Worked Examples for a Large SUV Battery
The table uses an example SUV with about 100 kWh of usable capacity, charging from 10% to 90% (80 kWh added). Your car’s real numbers will differ, so check its usable capacity and onboard charger rating.
| Charger setting | Power at 240 V | Approx. time to add 80 kWh | Plus 10% allowance |
|---|---|---|---|
| 48 A | about 11.5 kW | about 7 hours | about 7.7 hours |
| 40 A | about 9.6 kW | about 8.3 hours | about 9.2 hours |
| 32 A | about 7.7 kW | about 10.4 hours | about 11.5 hours |
| Level 1, 12 A at 120 V | about 1.4 kW | about 57 hours | about 63 hours |
These are calculations, not test results. They show why a Level 2 circuit matters for large vehicles: on a standard outlet, a full refill takes days.
What Changes the Answer
- Onboard charger limit: check the car’s maximum AC charging rate in the owner’s manual.
- Supply voltage: some buildings supply 208 V instead of 240 V, which lowers power by about 13%.
- Battery temperature: cold packs charge more slowly at first.
- Charge limit: stopping at 80% or 90% for daily use skips the slowest part of the session.
For daily driving, the real question is how much you used today, not how long a full charge takes. A 40-mile commute in an SUV may use around 15 kWh, about 90 minutes at 48 A. See how many kWh it takes to charge an EV and charging times at 7, 11 and 22 kW.
Choosing the Right Setup
The EV-ACT5006T delivers up to 48 A when hard-wired on a 60 A circuit, or 40 A on a NEMA 14-50 receptacle. It has a 25 ft NACS cable, useful for long SUVs parked nose-in or tail-in, plus an IP65/IP66 enclosure and ETL, FCC and CE marks. If your SUV uses a J1772 inlet, an approved adapter or a J1772 charger is needed.
Frequently Asked Questions
How long does it take to charge an electric SUV at home?
On a 48 A charger, a large SUV battery can go from low to nearly full in about 7 to 9 hours. Smaller daily top-ups take one to three hours.
Is 40 A enough for an electric SUV?
For most owners, yes. At about 9.6 kW, an overnight session replaces far more energy than typical daily driving uses.
Why does my SUV charge slower than the charger rating?
The car’s onboard charger, battery temperature, supply voltage or a set charge limit can all reduce the rate.
Related Reading
- How Many kWh Does It Take to Charge an EV?
- How Long Does It Take to Charge an EV at 7 kW, 11 kW and 22 kW?
- How Fast Does a 40 Amp EV Charger Charge?
- What Is the Fastest Home EV Charger?
