The difference in one line
Level 1 is any standard household outlet — about 120 volts and roughly 1.4 kW of power. Level 2 uses a dedicated 240-volt circuit, typically delivering 7 to 11 kW, which is five to seven times faster. Level 1 needs no installation; Level 2 needs a dedicated circuit and usually a wall unit.
How much range each adds overnight
Level 1 adds roughly 3 to 5 miles of range per hour, so a long overnight charge restores around 40 to 50 miles. Level 2 adds roughly 25 to 40 miles per hour, comfortably refilling almost any EV overnight. To see the numbers for your specific battery and charger, run the charge-time calculator.
Who Level 1 is enough for
If you drive under about 40 miles on a typical day, own a plug-in hybrid, run a second car, or can reliably plug in for 10 to 12 hours each night, Level 1 may be all you need — with zero installation cost. The trade-off is flexibility: a few back-to-back high-mileage days can outrun what Level 1 replaces overnight.
Who needs Level 2
Higher daily mileage, long commutes, larger batteries that simply won’t refill on a trickle, households with two EVs, or anyone who just wants margin should plan for Level 2. It turns charging into a non-event: plug in at night, leave full every morning.
Does Level 2 cost more to run?
No. You pay per kilowatt-hour, and both levels deliver the same energy — Level 2 just delivers it faster. Your charging cost depends on your electricity rate, and the single biggest saving is charging during off-peak or EV-specific time-of-use windows. The charging-cost calculator compares your home rate against gasoline.
What Level 2 requires
A Level 2 charger needs a dedicated 240-volt circuit with a breaker and wire sized to at least 125% of its continuous current, installed by a licensed electrician. Many homes have the capacity already; if yours is tight, check first with the panel-fit tool. You’ll also choose between a hardwired unit and a plug-in unit on a NEMA 14-50 outlet.