Charging Your EV at Home: Everything You Need to Know

Connect easily from home

You have just purchased an electric vehicle. You probably have a bunch of questions regarding your new purchase, including: How do I charge my car at home? We have the answers for you.

Do I need a special electric vehicle charger socket at home?

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While the technical answer is “no,” you’ll probably want a dedicated Level 2 home charger if you use an electric vehicle as your primary mode of transportation.

Unlike other electrified vehicles like plug-in hybrids, which use small batteries to supplement internal combustion engines, a pure EV relies exclusively on a very high capacity battery to power the vehicle. Therefore, the battery of an electric vehicle requires large amounts of electricity to recharge.

Most electric cars include an adapter that plugs into a standard 110-volt wall outlet. These Level 1 chargers look like oversized extension cords and come in handy if you’re ever caught in a situation where high capacity charging isn’t available.

The downside to this convenience is that a standard wall outlet only adds 3-5 miles of range per hour. At this rate, a 10-hour overnight charge only provides about 50 miles of riding distance.

The flexibility of fast charging ensures you’ll always have enough battery life for those unplanned errands or last-minute long drives, which is where a Level 2 fast charger comes in.

Unlike standard chargers, a Level 2 setup is approximately 5x faster, increasing charging speed to approximately 25 miles of range per hour. An overnight charge usually provides enough time for a full charge with most electric vehicles.

The standard North American Level 2 charger uses a universal J1772 connector; it is safe to assume that your electric vehicle uses a J1772 configuration, although Tesla vehicles use a proprietary connector that can be easily mated to a J1772 connector using an adapter.

Keep in mind that frequently charging your electric vehicle to 100% and draining the battery near zero will reduce battery life. For this reason, you can adjust the charger and car settings to limit the charge to 80% (this is often the default setting in fact), thus promoting battery longevity.

What do I need to set up a Level 2 charger at home?

240 volt level 2 charger

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You will have several options when purchasing a Level 2 charger, including amperage and cable length. While most Level 2 chargers operate between 16 and 30 amps, some units use higher capacity configurations of 50 amps or even 80 amps.

A 50 amp or 80 amp unit might sound appealing because it sends more electric power for faster charges (providing between 37 and 65 miles of range per hour), but you’ll want to make sure your car is equipped with a larger capacity on-board charger is compatible with the higher amperage.

Don’t worry about overloading your car’s electrical system, as higher amperage chargers automatically adjust based on what the vehicle can handle. But if your car is compatible with these high amps, you’ll find the increased charging speed a welcome upgrade.

When it comes to charging cable length, we recommend going with the longest cable available, as home parking logistics can often involve unforeseen obstacles like garage clutter or maneuvering around. other cars.

Wall chargers can cost between $300 and $1,200, and you’ll want to consult an electrician for installation. If you’re not already pre-wired for a 240-volt connection, budget between $250 and $2,000 for professional installation.

Also note that 50 amp units may require an upgrade to your electrical box. If you live in a condo or townhouse that isn’t pre-wired for a car charger, installation can be a lot more expensive.

Virtually all home chargers can be purchased at home improvement stores like Lowes and Home Depot, or online at shopping sites like Amazon. Many can be ordered with the option of a 240 volt NEMA 14-50 or NEMA 14-30 outlet (like you would use for an electric range or clothes dryer), or a hard wire straight to your power line. Consult an electrician to confirm which is best for you.

How much will it cost to charge my car at home?

The cost per kilowatt hour to charge your car varies greatly depending on the time of day. Most power companies charge significantly more for power consumption during peak hours between 4:00 p.m. and 9:00 p.m., to discourage grid overloading.

Avoid those hours, and electricity costs average between 12 and 14 cents per kilowatt hour, which translates to between $14 and $20 for a full charge, depending on your car’s battery capacity. Installing solar panels can lower your electric bill, so consider using the power of the sun to boost your power supply.

Optimizing your charging times to avoid high rates is easy using smart or connected chargers that can schedule charges and track charging activity. Smart chargers are often built into smart home systems like Alexa, and can recall charging status, state of charge, and added range miles on command.

In some cases, electric vehicles can send unused electricity back to the grid using vehicle-to-grid technology, or V2G, to create a credit on your electricity bill.

What is the future of home charging?

Home charging has come a long way in just a few years, and you can expect these innovations to continue as technology continues to develop.

While Level 3 (or fast DC) chargers are capable of adding 175 miles of range in just 30 minutes; don’t expect to see fast chargers in your home anytime soon, as they require significant hardware for safe operation.

Contactless chargers that allow the car to be driven on an induction mat for wireless charging are coming sooner; With remote parking, these systems will allow you to easily park to your home and allow your car to drive to the garage for a charge.

Electric vehicles and electricity bills: myth versus reality


More information about Charging Your EV at Home: Everything You Need to Know

Plug in from home with ease

So you just bought an electric vehicle. You’ve probably got a bunch of questions about your new purchase, including: How do I charge my car at home? We’ve got the answers for you. 

Do I Need a Special EV Charger Outlet at Home?
EHStock/Getty

While the technical answer is “no,” you’ll likely want a dedicated level 2 charger at home if you rely on an electric vehicle as your primary mode of transportation.

Unlike other electrified vehicles like plug-in hybrids, which use small batteries to complement internal combustion engines, a pure EV relies exclusively on a very high capacity battery to power the vehicle. As a result, an EV’s battery requires significant amounts of electricity to charge.

Most electric cars include an adaptor that plugs into a standard 110-volt wall outlet. These Level 1 chargers resemble oversized extension cords and are handy if you’re ever caught in a situation where high-capacity charging is not available.

The downside to that convenience is that a standard wall outlet only adds 3 to 5 miles of range per hour. At that rate, an overnight charge of 10 hours only provides 50 miles or so of driving distance. 

Having the flexibility of quick top-offs ensures you’ll always have enough range for unplanned errands or last-minute longer distance trips is where a Level 2 fast charger comes in. 

Unlike standard chargers, a Level 2 setup is approximately 5 times faster, boosting charging speed to approximately 25 miles of range per hour. An overnight charge usually provides enough time for a full charge with most EVs.

The standard North American Level 2 charger uses a universal J1772 connector; it’s safe to assume your EV uses a J1772 setup, though Tesla vehicles use a proprietary connector that can be easily linked to a J1772 connector using an adaptor.

Keep in mind that frequently charging your EV to 100 percent and depleting the battery close to zero will reduce the life of the battery. For this reason, you can adjust charger and car settings to limit the charge to 80 percent (it’s often the default setting in fact), thereby promoting battery longevity.
What Do I Need to Set Up a Level 2 Charger at Home?
Lefanev/Getty

You’ll have several options when shopping for a Level 2 charger, including amperage and cable length. While most Level 2 chargers operate at between 16 and 30 amps, some units use higher capacity 50 amp or even 80 amp setups.

A 50 amp or 80 amp unit might sound attractive because it sends more electrical energy for quicker charges (delivering between 37 and 65 miles of range per hour), but you’ll want to make sure your car is equipped with a higher capacity onboard charger that’s compatible with the higher amperage. 

Don’t worry about overloading your car’s electrical system, as higher amperage chargers automatically adjust based on what the vehicle can handle. But if your car is compatible with those elevated amps, you’ll find the boost in charge speed a welcome upgrade.

As for charging cable length, we recommend going for the longest available cord, since home parking logistics can often involve unanticipated obstacles like garage clutter or maneuvering around other cars.

Wall charger units can cost anywhere between $300 and $1,200, and you’ll want to consult with an electrician for installation. If you’re not already pre-wired for a 240 volt connection, budget anywhere from $250 to $2,000 for professional installation.

Also note that 50 amp units might require an upgrade to your electrical box. If you live in a condominium or townhouse that’s not pre-wired for a car charger, installation can be significantly costlier. 

Virtually all home chargers can be purchased at home improvement stores like Lowes and Home Depot, or online on shopping sites like Amazon. Many can be ordered with the option of either a 240-volt NEMA 14-50 or NEMA 14-30 plug (like you’d use for an electric stove or clothes dryer), or a hard wire directly to your electrical line. Consult with an electrician to confirm which is best for you.
How Much Will It Cost to Charge My Car at Home?

The cost per kilowatt hour to charge your car varies dramatically depending on time of day. Most power companies charge significantly more for energy consumption during peak hours between 4:00 pm and 9:00 pm, to discourage overloading the grid.

Avoid those hours, and electricity costs average between 12 and 14 cents per kilowatt-hour, which translates to anywhere between $14 and $20 for a full charge, depending on your car’s battery capacity. Setting up solar panels can alleviate your electricity bill, so consider using the power of the sun to augment your electrical supply.

Optimizing your charging times to avoid steep rates is easy using smart or connected chargers, which are capable of scheduling charges and tracking charge activity. Smart chargers are often integrated into smart home systems like Alexa, and can recall charging status, state of charge, and miles of range added on command.

In some cases, EVs can return unused electricity back into the grid using vehicle-to-grid, or V2G technology, to create a credit on your electricity bill.

What Is the Future of Home Charging?

Home charging has come a long way in a few short years, and you can expect those innovations to continue as technology continues to develop. 

While level 3 (or DC fast) chargers are capable of adding 175 miles of range in only 30 minutes; don’t expect to see fast chargers at homes any time soon since they require significant hardware for safe operation. 

Coming sooner are contactless chargers that allow the car to be driven over an induction pad for wireless charging; together with remote parking, these systems will make it easy to simply pull up to your home and allow your car drive itself into the garage for a charge.

EVs and Electric Bills: Myth vs. Fact

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