An EV home charger in Australia is a dedicated wall unit or portable cable that recharges your electric car from your home power supply. Most homeowners choose a 7kW wallbox on a single-phase supply, which adds roughly 40km of range per hour and fully charges an average EV overnight. Installation must be done by a licensed electrician, and running costs are far lower than petrol.
How does home EV charging actually work?
Every electric car comes with a portable charging cable that plugs into a standard 10-amp powerpoint. This is called trickle charging, and while it works, it is slow, often adding only 10 to 15km of range per hour.
A wall-mounted charger, or wallbox, connects directly to your switchboard on its own circuit. It delivers far more power safely, which is why most owners install one within the first few months. The car's onboard charger converts the AC power from your home into DC to fill the battery.
Because chargers draw high, sustained current, this is not a DIY job. It sits firmly in the same category as switchboard work you would leave to a professional, and you will want quality cabling and protection devices from a proper plumbing and electrical range installed by a licensed sparky.
What charging speed do you need?
Charger speed is measured in kilowatts (kW), and more kilowatts means faster charging. The right speed depends on your daily driving and your home's power supply.
Single-phase vs three-phase power
Most Australian homes have single-phase power, which supports chargers up to about 7kW. Newer or larger homes may have three-phase power, allowing 11kW or 22kW units for much faster top-ups.
Check your switchboard or ask your electrician which supply you have before buying. There is no point paying for a 22kW charger if your home can only deliver 7kW, and your car's onboard charger may cap the rate anyway.
Matching speed to your daily drive
If you drive 30 to 50km a day, a 7kW charger is more than enough, replacing your daily use in an hour or two. High-kilometre drivers, tradies covering big distances, or two-EV households benefit from three-phase speeds so both cars are ready by morning.
Portable charger or fixed wallbox?
The two main options are a portable charger you plug into a dedicated outlet, and a hardwired wallbox mounted to your wall. Both charge at similar speeds when set up on the right circuit.
A portable unit is handy if you rent, move often, or want to take it to a holiday house. A fixed wallbox is tidier, weatherproof, and usually offers smart features like scheduling, app control, and solar integration.
For an outdoor install with no undercover parking, protect the unit and your car's charging port from the weather. A simple heavy duty waterproof tarpaulin is a cheap way to keep rain off the connection point while you sort out a permanent carport.
Which charger suits which driver?
Choosing comes down to your home, your car, and how far you drive. The table below breaks down the common setups so you can match one to your situation.
| Setup | Speed | Range added per hour | Best for |
|---|---|---|---|
| Trickle (10A powerpoint) | ~2.4kW | 10-15km | Low-km drivers, backup only |
| Single-phase wallbox | 7kW | ~40km | Most homeowners, daily commuters |
| Three-phase wallbox | 11kW | ~60km | High-km drivers, larger batteries |
| Three-phase (max) | 22kW | ~120km | Two-EV homes, fleet/tradie use |
Remember your car's onboard charger sets the ceiling. Many EVs accept only 7kW or 11kW on AC, so a 22kW wallbox will not charge them any faster even on three-phase power.
What does it cost to install and run?
Installation cost depends on how far your parking spot is from the switchboard, whether cabling needs to run underground, and if your board needs upgrading. A straightforward job is affordable, while long cable runs or a board upgrade add to the bill.
Running costs are where EVs shine. Charging overnight on an off-peak tariff, or better still from rooftop solar during the day, costs a fraction of filling a petrol tank for the same distance.
Many smart wallboxes let you schedule charging for the cheapest tariff window automatically. Pairing this with a solar system means you can top up on free daytime power, driving your running cost close to zero.
Getting the install right
Mounting height, cable management, and weather protection all matter for a neat, safe setup. The charger should sit at a comfortable height near your parking spot with the cable reaching your car's port without stretching.
Outdoor units need an IP-rated enclosure and secure fixings into masonry or a solid post. Quality corrosion-resistant fasteners like 316 stainless steel bolts are worth using on any external bracket so nothing rusts or works loose over the years.
Your electrician will also fit the correct circuit protection and may recommend a load management device so the charger does not overload your supply when other appliances are running.
Common mistakes to avoid
Do not rely on trickle charging through an extension lead, as it can overheat and is a genuine fire risk. Always use the supplied cable directly into a suitable outlet, or upgrade to a proper wallbox.
- Skipping the electrician to save money, which voids warranties and breaks the rules.
- Overbuying speed your car or home cannot use.
- Ignoring weatherproofing on outdoor installs.
- Forgetting solar integration, missing the cheapest way to charge.
Get these basics right and home charging becomes the most convenient part of EV ownership. For smart chargers, energy monitors, and accessories, it is worth browsing our wider electronics range alongside the charger itself, and keeping a set of spare AAA alkaline batteries handy for any remote or key fob that powers your charging setup.
Frequently asked questions
Can I install an EV charger myself in Australia?
No. EV charger installation involves high-current switchboard wiring and must be carried out by a licensed electrician. Doing it yourself is illegal, voids your charger warranty and home insurance, and creates a serious fire and shock risk. A qualified sparky also fits the correct circuit protection.
How long does it take to charge an EV at home?
On a common 7kW single-phase wallbox, most EVs charge fully in around 6 to 10 hours, easily done overnight. A basic 10-amp powerpoint takes much longer, often over a day. Three-phase 11kW or 22kW chargers cut this time significantly if your car and home support them.
Do I need three-phase power for an EV charger?
No, single-phase power supports 7kW charging, which suits most homeowners and daily commutes. Three-phase power enables faster 11kW or 22kW charging, useful for high-kilometre drivers or two-EV households. Check your switchboard with an electrician first, as upgrading to three-phase can be costly.
Is it cheaper to charge an EV at home or at a public station?
Home charging is almost always cheaper, especially on an off-peak tariff or from rooftop solar. Public fast chargers are convenient for road trips but cost considerably more per kilowatt-hour. Scheduling home charging for the cheapest tariff window keeps your running costs to a minimum.
