Short answer
You need a Level 2 home charger only if a 120 V outlet can’t put back your daily driving in the hours the car sits at home. Level 1 adds about 5 miles (5 to 8 km) of range an hour, which is enough for many plug-in hybrids and short, regular commutes. Level 2 on 240 V adds about 25 miles (about 35 km) an hour and covers long commutes, irregular schedules and big batteries.
It is the first question most new EV owners ask, and it comes down to three numbers: how far you drive on a typical day, how many hours the car is parked at home, and how fast your car can take a charge. Below, we set the range-per-hour figures from the US Department of Energy (DOE), Natural Resources Canada (NRCan), Ontario and Hydro-Québec side by side, give you a simple test, and show the middle path between a household outlet and a wall charger. Browse every cord in our portable charger comparison and every wall unit in our Level 2 charger comparison.
Level 1 and Level 2 in plain English
Level 1 is charging from an ordinary 120 V household outlet through a portable cord. DOE and NRCan both say most EVs come with one, though Tesla stopped including a cord with new cars in the US in 2022, so check what came with yours. On a standard NEMA 5-15 outlet, the cords we track draw 12 A, about 1.3 to 1.4 kW according to Tesla’s, Lectron’s and Pion’s manuals. DOE says the outlet should be on a dedicated branch circuit near where you park.
Level 2 runs on 240 V (208 V in many commercial buildings), either from a wall charger or from a portable cord plugged into a 240 V outlet such as a NEMA 14-50, the kind Ontario compares to a stove or dryer outlet. DOE says most home units run at up to 30 A (7.2 kW); 48 A wall chargers such as Tesla’s Wall Connector reach 11.5 kW. Both levels use the same plug on the car, J1772 or NACS.
| Level 1 | Level 2 | |
|---|---|---|
| Voltage | 120 V | 240 V (208 V in many commercial buildings) |
| Connection | NEMA 5-15 household outlet (or a 5-20) | A 240 V outlet such as a NEMA 14-50, or a hardwired wall charger |
| Power | About 1.3 to 1.9 kW | Up to 7.2 kW on most home units; 11.5 kW at 48 A |
| Range per hour (DOE) | About 5 miles | About 25 miles |
| Range per hour (NRCan) | 3 to 8 km | 16 to 97 km, depending on the vehicle |
| Range per hour (Ontario) | About 5 to 8 km | About 35 km |
| Time to add 40 km (Hydro-Québec) | About 8 hours | 1 to 3 hours at 7 kW |
| What it takes | A sound outlet near the car, on a dedicated circuit | A 240 V circuit from a licensed electrician, usually with a permit |
The figures come from DOE’s Alternative Fuels Data Center, NRCan, Ontario.ca and Hydro-Québec. Most of the spread is the car. DOE’s Level 1 figure assumes 1.9 kW, more than a 12 A cord draws from a household outlet, so the cord in your trunk adds roughly a quarter to a third less. NRCan’s wide Level 2 range reflects how much faster some cars can take a charge than others; more on that below.
The test: miles driven against hours parked
DOE says many owners cover their daily driving by charging overnight on Level 1, and suggests Level 2 for long commutes, irregular schedules or large batteries that need more than a night to fill. To see which group you are in, divide the distance you drive on a typical day by the range Level 1 adds per hour, and compare the answer with the hours the car is parked at home.
- 30 miles (about 50 km) a day: about 6 hours at DOE’s rate, 8 to 9 on a 12 A cord. A night at home covers it.
- 40 km (25 miles) a day: about 8 hours by Hydro-Québec’s figure, 5 to 8 hours by Ontario’s. Still a night’s work.
- 60 miles (about 100 km) a day: about 12 hours at DOE’s rate, 16 to 18 on a 12 A cord. That outruns most nights, so Level 2 makes sense.
Two things shift the answer. If you charge only in an off-peak window, count that window, not the whole night. Ontario’s Ultra-Low Overnight plan and BC Hydro’s optional time-of-day pricing both favor 11 p.m. to 7 a.m., and those eight hours give about 40 miles at DOE’s Level 1 rate, or 40 to 64 km at Ontario’s. Second, size for the typical day, not the rare road trip: Hydro-Québec says charging at home and at work covers about 90 percent of an EV’s needs, with public stations covering the rest.
Plug-in hybrids usually manage on Level 1
Ontario’s government describes Level 1 as best for overnight charging or for plug-in hybrids with smaller batteries. A smaller battery needs less energy to refill, and the gas engine takes over if it runs out. Hydro-Québec draws the same line from the other side: its charging times are for all-electric cars and, it says, don’t apply to plug-in hybrids.
Before buying Level 2 equipment for a plug-in hybrid, look up its maximum AC charging rate in the owner’s manual: Level 2 only helps up to that rate. Check the plug, too: J1772 cords such as the Pion and Lectron’s J1772 model are made for J1772 battery EVs and plug-in hybrids, while Tesla’s Mobile Connector is designed for battery EVs with a NACS port only.
Your car sets the top speed
A Level 1 cord or a Level 2 charger doesn’t charge the battery itself. It supplies AC power, and the car’s onboard charger converts it, so the car decides how much it takes. DOE lists the vehicle’s internal charger capacity among the things that set charging time, which is why NRCan’s Level 2 figure runs from 16 to 97 km an hour depending on the vehicle. A 48 A charger on a car that accepts 32 A charges at 32 A.
So look up your car’s maximum AC charging rate, in kW or amps, before you choose. If it is low, a modest Level 2 setup delivers all of it; if it is high, the circuit decides how much you can use. Our guide to 32, 40 or 48 amps and breaker size works through the match. For a rough full-charge time, Tesla’s manual says to divide the battery size in kWh by the charging power in kW. Its own cord draws 1.3 kW from a household outlet and 7.6 kW from a NEMA 14-50: close to six times as fast on the same car.
The middle path: a dual-voltage cord
You don’t have to choose once and for all. A dual-voltage portable cord charges from a household outlet now and from a 240 V outlet later, if you add one, with the same cord. Plug adapters set the current: on the Tesla Mobile Connector, 12 A on a 5-15, 16 A on a 5-20, 24 A on a 14-30 dryer outlet and 32 A on a 14-50 or 6-50, per Tesla’s charging table. A 5-15 adapter is always in the box; the others come with some versions or from Tesla.
For a car with a J1772 port, the Pion Power Flex-AC Elite does the same with 12 A and 40 A adapters, and its app can turn the current down to as little as 6 A. It is also the one portable cord we recommend in Canada, with a stated CSA mark. For NACS-port cars in the US, Lectron’s Level 1 and 2 NACS cord gives 12 A or 40 A from its two plugs.
A 120 V, 20 A outlet is worth asking about. Tesla’s 5-20 adapter draws 16 A (1.7 kW), against 12 A (1.3 kW) on a 5-15: a third more Level 1 power. In an Ontario home, a charger on a 5-20R receptacle must meet the usual AFCI, GFCI and tamper-resistant receptacle rules, so it is a job for an electrician, not an adapter.
Safety: Level 1 still draws 12 to 16 A for hours at a time. Plug the cord straight into a grounded outlet in good condition, never through an extension cord, power strip or plug adapter (every manual we read forbids them), and have an electrician check the outlet before you rely on it every night. DOE recommends a dedicated circuit for Level 1 charging.
Our picks, with the current each cord draws from each outlet, are in our guide to the best portable EV chargers.
When a Level 2 wall charger is worth it
Get Level 2 when the test above fails: a long or irregular commute, a large battery, an off-peak window too short for Level 1, or two EVs sharing the same night. A wall charger also stays put, so nobody plugs into an outlet every day, and many reach 48 A when hardwired.
It needn’t be elaborate. The Grizzl-E Classic is a basic 40 A charger with no app or account. It plugs into a NEMA 14-50 or 6-50 outlet or can be hardwired, and an internal switch sets 16, 24, 32 or 40 A. Its manual pairs each setting with a circuit: 40 A on a 50 A circuit, 32 A on 40 A, 24 A on 30 A and 16 A on 20 A. The switch sits inside the case and is changed with the power off, a job for the electrician who installs it. Grizzl-E states certification to UL 2594 and the Canadian standard CSA C22.2 No. 280, but its Canadian store doesn’t list the Classic, so Canadian readers should start with our guide to EV chargers for cold climates and Canada.
Plan on a licensed electrician: ENERGY STAR advises one for a 240 V install, NRCan says most jurisdictions require one, and the electrician checks your panel’s capacity. Permits are local in the US; Ontario requires an ESA permit filed before work starts, BC requires a permit for every charger install, and Quebec requires an RBQ licence with the electrical-contractor subcategory for the work. Code editions vary by state and province, and the electrician follows the one adopted where you live. Our installation guide covers permits and what drives the cost, and our 2026 rebate guide covers what is left now that the US federal 30C credit has ended for chargers placed in service after June 30, 2026.
Compare every Level 2 home charger we track, or the Tesla and NACS chargers if your car has a NACS port.
So, do you need a home charger?
- Stay on Level 1 if you drive a plug-in hybrid, or if your typical day divided by about 5 miles (5 to 8 km) an hour fits comfortably inside the hours you are parked at home, and you have a sound outlet near the car.
- Buy a dual-voltage cord if you rent, may move, already have a 240 V outlet you could use, or want to start on Level 1 and step up later.
- Install Level 2 if your typical day outruns a night of Level 1, you charge only in an off-peak window, you have a large battery or two EVs, or you want to stop plugging into an outlet every day.
How we compared
- Read the charging pages of DOE, NRCan, the Government of Ontario and Hydro-Québec, and used their own range-per-hour figures rather than our own estimates.
- Took the current and power for each plug from the charger makers’ manuals.
- Checked permits, licensing and receptacle rules with the code bodies and safety authorities in each country and province we name.
- Mentioned products only where they show a kind of setup; our roundups carry the full picks and prices, with the date we checked.
What we don’t do: lab-test chargers or time charging sessions ourselves. Your car’s figures will differ from the agencies’ estimates.
Level 1 and Level 2 questions
How much range does Level 1 add overnight?
Roughly 40 to 50 miles in 8 to 10 hours, using DOE’s figure of about 5 miles an hour; DOE says 8 hours adds about 40 miles for a mid-size EV. In kilometers, Ontario puts Level 1 at 5 to 8 km an hour, and Hydro-Québec says 40 km takes about 8 hours. A 12 A cord on a household outlet draws less power than DOE assumes, so expect somewhat less.
Is Level 1 charging safe every night?
Yes, on the right outlet. Use a grounded receptacle in good condition, on its own circuit as DOE recommends, plug the cord straight in, and never use an extension cord or power strip. Tesla recommends leaving its cord plugged into the wall to cut wear on the outlet. If the cord warns that the wall plug is overheating, stop using that outlet and have an electrician check it.
Is Level 1 cheaper to run than Level 2?
Not as a rule. You pay your utility’s rate for each kWh either way, and DOE says the cost per mile depends on your car’s efficiency and that rate. Timing is where the level matters: Ontario’s Ultra-Low Overnight plan and BC Hydro’s optional time-of-day pricing both favor 11 p.m. to 7 a.m., and Level 2 fits far more charging into those eight hours.
Will a 48 A charger charge my car faster than a 32 A one?
Only if your car accepts more than 32 A. The car’s onboard charger sets the ceiling, so a bigger charger on a car that takes 32 A changes nothing except the circuit it needs. Check your car’s maximum AC charging rate first, then size the charger and circuit to it. Our amps and breaker guide works through 32, 40 and 48 A.
Can a 20 A outlet make Level 1 faster?
A little, with the right cord. Tesla’s Mobile Connector draws 16 A from a NEMA 5-20 outlet with Tesla’s 5-20 adapter, against 12 A from a standard 5-15: about a third more. Use only the cord maker’s own adapter, and have an electrician fit the 5-20 receptacle. In Ontario it must meet the usual AFCI, GFCI and tamper-resistant receptacle rules.
Do I need a permit for Level 2 charging?
Usually, yes. In the US your city or county decides, and many want a site plan first, DOE notes. Ontario requires an ESA permit before any charger install, BC requires a permit for every one, and Quebec requires an RBQ licence with the electrical-contractor subcategory for the work. Using an existing outlet for Level 1 involves no installation, but any new circuit or outlet is electrical work under the same rules.
