How to Choose a Home EV Charger: 40A vs. 50A vs. 80A

A Level 2 home charger is the single biggest upgrade most EV owners make. Instead of trickle-charging from a wall outlet, you can add a full day's driving in a few hours overnight. But chargers come in different power levels, and the right one depends on three things: your car, your electrical panel and how far you drive.

1. Start with your car's onboard charger

Every EV has a built-in limit on how much AC power it can accept. If your car tops out at around 11 kW, an 80A charger won't charge it any faster than a 48A or 50A unit. Check your owner's manual or the manufacturer's website for your vehicle's maximum AC charging rate before you buy.

2. Match the charger to your electrical panel

EV chargers draw power continuously for hours, so electrical code requires the circuit to be rated for at least 125% of the charger's current. As a rule of thumb:

• 40A charger: needs a 50A circuit
• 48A charger: needs a 60A circuit and is usually hardwired
• 50A charger: needs a 70A circuit and must be hardwired
• 80A charger: needs a 100A circuit and must be hardwired

Larger chargers may require a panel upgrade, especially in older homes. A licensed electrician can do a load calculation and tell you what your panel can support.

3. Think about how you drive

Most drivers cover well under 50 miles a day. Even a 40A charger, which adds roughly 25 to 30 miles of range per hour, replaces that overnight with plenty of room to spare. Higher-power chargers make sense if you drive long distances daily, share one charger between two EVs, or want to top up quickly between trips.

Plug-in or hardwired?

Plug-in chargers connect to a NEMA 14-50 or 6-50 outlet on a 50A circuit, which makes them easy to move or replace, but limits them to 40A. Hardwired chargers are connected directly to the circuit, allow higher power, and are often preferred for outdoor installations. Either way, we recommend installation by a licensed electrician.

Our recommendation

• Most homes and most EVs: a 40A to 50A charger is the sweet spot.
• Two EVs, long daily commutes, or a car with a high charging limit: consider an 80A charger, if your panel can support it.

Browse our home EV chargers, or contact us with your car and panel details and we'll help you pick the right one.