Level 1 vs Level 2 charging at home

Level 1 is the cord that came in the trunk, plugged into a standard 120-volt household outlet. It typically pulls 12 amps and adds roughly 3 to 5 miles of range per hour. Leave the car plugged in overnight for 12 hours and you have added something like 40 to 55 miles.

For a household that drives 30 miles a day and parks at home every night, that math works. Plenty of plug-in hybrid owners never install anything else, because a small battery fills completely on Level 1 overnight.

Level 2 runs on a 240-volt circuit, the same class of service as an electric dryer or range. A 40-amp charger delivers about 9.6 kW and adds roughly 25 to 35 miles of range per hour. A 48-amp hardwired unit pushes that toward 11.5 kW.

The practical difference is not top speed, it is recovery. A battery that is nearly empty goes back to full overnight instead of over two or three nights. If you ever take an unplanned 150-mile day, Level 2 means you are not rationing range the next morning.

You drive more than about 40 miles on a typical day. You own a long-range EV with a 75 kWh or larger battery. Two drivers share one charging spot. You are on a time-of-use electricity plan with a narrow cheap window overnight — Level 1 simply cannot move enough energy inside that window to matter.

An electrician runs a dedicated 240-volt circuit from your service panel to the parking spot, installs either a NEMA 14-50 receptacle or a hardwired charger, and pulls a permit. Most straightforward garage jobs land in the low four figures. Long runs, outdoor conduit, or a panel that is already full push it higher.