EV Charging Time Perth: 6 Things That Affect Speed
EV charging time is one of the most common questions for new electric car owners, and the answer depends on a few things. Understanding EV charging time helps you choose the right home charger and plan your charging around daily life. Here is how long it takes to charge at home and the six things that affect EV charging time.
What determines EV charging time?
EV charging time comes down to two main figures: how much power your charger delivers, measured in kilowatts, and how big your car’s battery is, measured in kilowatt-hours. A bigger battery and a slower charger mean a longer charge time, while a faster charger on the same battery cuts it down.
6 things that affect EV charging time
- The charger’s power output in kilowatts
- Your car’s battery size in kilowatt-hours
- How low the battery is when you start
- Single-phase or three-phase supply
- The maximum AC rate your car accepts
- Temperature and the car’s battery management
Home charging speeds
As a rough guide, a standard 7kW home wall charger adds around 40 to 50 kilometres of range per hour, so most cars charge fully overnight. A portable charger on a normal outlet is far slower. Knowing these speeds helps you match the charger to your daily driving and your ideal charge time.
Single-phase vs three-phase
Single-phase home charging tops out around 7kW, which suits most drivers. Three-phase can deliver up to 22kW, cutting EV charging time further, but only if your car accepts it, as many cap their AC charging at 11kW. For most Perth homes, 7kW single-phase gives a comfortable overnight charge.
Your car’s charging limit
An important point is that your car, not just the charger, sets the EV charging time. Each model has a maximum AC charging rate, so a 22kW charger will not charge faster than the car allows. It is worth checking your car’s limit before paying for a faster charger you cannot fully use.
Why overnight charging works
For most owners, EV charging time barely matters day to day, because the car charges while you sleep. Plugging in overnight, ideally on an off-peak tariff or from solar, means you wake to a full battery. This is why a 7kW home charger suits the vast majority of Perth households.
Topping up vs full charges
You rarely charge from empty to full, so real-world charge time is usually shorter than the headline figure. Most people top up from, say, 40 percent overnight, which takes only a few hours even at 7kW. Daily top-ups keep the car ready without ever needing a long charge.
Public vs home charging
Public fast chargers deliver a much shorter EV charging time, useful on a road trip, but they are not how most people charge day to day. For everyday use, a home charger is cheaper and more convenient, even if the charge time is longer, because it happens while you are not waiting.
Planning around your routine
The practical takeaway is to match charging to your routine, not chase the fastest charger. If you drive average distances and park at home overnight, a 7kW charger covers you comfortably. Only high-mileage drivers, or those without overnight access, really benefit from chasing faster charging.
Why use a licensed electrician
Getting the best EV charging time at home starts with the right charger on a properly installed dedicated circuit, which is licensed work. A licensed electrician assesses your supply and recommends the charger that suits your car and home. The state’s Building and Energy sets the standards involved.
Want the right home charger for your EV in Perth?
ACS Electrical assesses your supply and installs the best option for your EV charging time. Explore our EV charger installation service, EV charger cost guide or home EV charger guide.
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