Home EV Charger Buying Guide: How to Choose

Before you shop: do you need Level 2 at all?

Level 1 charging from an ordinary 120-volt socket adds only a few miles of range an hour, but across a night at home that can cover a typical commute, and it needs no installation. If your driving is short and your car sleeps at home, check our do you need Level 2 guide before spending anything. The rest of this guide assumes you have decided you want Level 2.

Decision 1: the connector

North American EVs use one of two connectors for AC charging at home: J1772, on nearly every non-Tesla car, and NACS (standardized as SAE J3400), on Teslas and a growing number of other new cars. A charger comes with one or the other. Adapters bridge the gap in both directions for home AC charging.

The rule of thumb: an all-Tesla or all-NACS household can buy a native NACS charger and never touch an adapter. Anyone else is usually better served by J1772, because a small adapter lets a Tesla use a J1772 charger, while the reverse leaves every J1772 car depending on an adapter. Our J1772 versus NACS explainer covers the transition.

Decision 2: the circuit your panel can spare

This is the decision that sets the budget. EV charging is a continuous load under the National Electrical Code, so a charger may use only 80% of its circuit:

• 16 amps needs a 20-amp circuit (about 3.8 kW)
• 24 amps needs a 30-amp circuit (about 5.8 kW)
• 32 amps needs a 40-amp circuit (about 7.7 kW)
• 40 amps needs a 50-amp circuit (9.6 kW)
• 48 amps needs a 60-amp circuit (about 11.5 kW)

What your panel can spare comes from a load calculation, which an electrician does with the panel in front of them. Our panel capacity guideexplains it, and if the answer is “not much”, our 100-amp panel roundup ranks the chargers built to fit.

Decision 3: plug-in or hardwired

A plug-in charger goes into a 240-volt receptacle; a hardwired one connects straight to the circuit. Plug-in is more flexible — the charger can move with you and be swapped without an electrician — and if a NEMA 14-50 already exists near the car, it may mean no install at all. Hardwired is the only route above 40 amps and removes a plug joint from a circuit that runs hot for hours. If you rent, plug-in is almost always right. Our hardwired versus plug-in comparison covers the full trade, and our charger versus outlet guide explains how the two halves fit together.

Decision 4: the amps your car can actually use

Every EV has an onboard charger that caps the AC power it accepts. Buying more charger than your car can take gains nothing, and paying for a bigger circuit to feed it costs real money. Look up your car’s figure — our onboard charger limits guideshows where — and let the smaller of the car’s limit and the circuit’s limit set the charger. The practical difference between 40 and 48 amps is about six miles of range an hour, which our 40A versus 48A comparison works through.

Decision 5: the features, in order of importance

A real safety listing. UL, ETL (Intertek) or CSA against UL 2594, named on the product. This is the non-negotiable, and it has nothing to do with price.

Adjustable current. A charger you can set to your circuit today and turn up after a panel upgrade is the purchase that survives change.

Cable length. Measure from the mounting spot to the charge port with the car parked the way you park it, then add slack. Most chargers here come with 23 to 25 feet.

Enclosure and temperature rating, if it will live outside — our garage or outside guide explains what each rating means.

ENERGY STAR, if a utility rebate is part of your budget; many rebates require it, and it also means lower standby energy use.

Wi-Fi and an app, last. The car usually schedules charging on its own; an app earns its keep for energy tracking, load management and utility programs. Our smart versus basic comparison covers when.

Warranty, as a tiebreaker. Three years is common among the chargers we recommend; some budget units offer two, and a few one.

Budget for the install, not just the charger

The charger is often the smaller half of the bill. PG&E publishes an average installation cost of $400 to $1,200 on top of the charger, and a long wire run, a full panel or a service upgrade pushes past that. That is the strongest argument for deciding the circuit before the charger: the cheapest charger on a circuit you have to build can cost more overall than a pricier one on an outlet you already own. Our installation cost guide covers the five things that move a quote, and our rebates guide covers what utilities still offer now that the federal credit has expired.