How to charge an electric car
By James Cleary · 17 Jul 2026
Until the late 1970s, when a car’s fuel needle began to slip towards empty, Aussies were still pulling into a service station to receive just that… service.An attendant would approach the driver’s window and ask how much fuel a customer wanted, the most common reply being, fill ‘er up!That helpful person duly filled the car, checked the oil and water, cleaned the windscreen, received the appropriate amount of cash, brought back the change and waved a happy motorist on their way.But then, the dominance of that wholesome exchange was blown away by the arrival of self-service petrol stations.All of a sudden the forecourt attendant was unceremoniously kicked to the kerb and a ripple of nervous trauma passed through the broader populace.The onus was on drivers to pull up and fill the car themselves. Second nature now, a revolution then.And with the rising popularity of battery electric vehicles (BEVs) and plug-in hybrids (PHEVs) we’re facing a similarly unsettling scenario with the switch from the familiar petrol bowser to intimidating charge pylons.No hose and nozzle, rather a thick cable and bulky connector plug. No panel operator to process your purchase, you’re on your own with a smartphone app or swipe card to get the job done.And arguably an even bigger shift is the ability to top up your car at home and/or where you work. It’s still unfamiliar territory for many, so for the EV curious worried about the process of charging an electric vehicle, never fear CarsGuide is here with a pre-flight checklist to help you get to grips with the brave new world of public or home charging. The first thing we’d recommend is a subtle mindset shift. Don’t think of an EV as you would a car powered by an internal combustion engine (ICE). Think of it more like your phone; a case of top-up rather than fill-up.The current crop of high-voltage lithium-ion EV drive batteries respond best to being kept between 20 and 80 per cent charged.Keeping that 20 per cent minimum in mind is helpful because driving an EV until the battery is close to depletion means you run the risk of failing to proceed before you can reach a charge point. Who needs the strain of pushing into the range anxiety zone?That mid-range charge band reduces the heat stress on a pack’s individual cells, which can accelerate chemical degradation and impact the battery’s effectiveness and longevity.To that end, DC fast-charging slows to a snail’s pace once the battery hits 80 per cent, anyway. So, better to save time and unplug at that point.That’s why so many car manufacturers quote a 10-80 or 20-80 per cent DC charge time for the EVs they’re hoping to land in your driveway. If you need every last kilometre of potential range for a road trip, by all means go to 100 percent on DC, but best not to make it a habit.If you’d like to dig deeper into the characteristics of different EV battery types, and there are several, we’ve got you covered here.But what about those two letters - DC, not to mention their related cousins - AC?If you were paying more attention than I was in high school physics you’ll know they stand for Direct Current (DC) and Alternating Current (AC).Without getting into the weeds on the differences, the main things you need to know are DC is high-voltage while AC is generally lower output as found in typical household three-pin outlets. And rechargeable EV batteries can only store DC electricity, which means they need an onboard charger to convert AC to DC. It’s a long way to the top if you want to charge a car.Home or work charging is by far the most common means of juicing up an electric vehicle with AC the dominant form.The highest output you’ll find in a home charger currently in Australia is 22kW, which matches the AC capacity of the Porsche Taycan, its Audi e-tron GT corporate sibling and several others.This will require a three-phase upgrade, as will a slightly lesser 11kW charger, which is why many EV owners opt for a 7.2kW (single-phase) set-up. You’ll still need a registered sparky for the installation and charge times will be longer but you don’t run into the heat-related issues fast-DC charging brings, plus there’s less fuss and expense. And if you have solar and a storage battery, you're laughing.Or, simplest of all, use an adaptor cable that plugs straight into house power. Charging takes an age but that might be fine for you.There are a multitude of home wallbox-style chargers available. Even that massive hardware chain with the local primary school sausage sizzle out the front has multiple options available.You may have also noted council-provided AC chargers on a nearby telegraph pole. Free to use, they will range from 7.2 to 22kW output.The Australian Federal Government, as well as several state governments continue to invest in EV charging infrastructure, so the number of public chargers is set to continue growing steadily in years to come. And it’s worth noting an EV can only take in as much energy as its AC/DC convertor will allow. Plug 22kW AC into a 7.2kW car and your maximum charge rate is… 7.2kW.When it comes to plugging in, that’s the process. Open the flap to the EV’s charge port, push the cable into the connector and press go on your charging device of choice.Only a few years ago there was VHS vs Betamax (for younger readers, they were competing video tape formats) style confusion over Type 2 and CHAdeMO connectors.Happily, the Type 2 style appears to have won the arm wrestle, which keeps things simple at home or when using a public charger.The car will indicate its battery’s state of charge as the electricity goes in, as will a readout on the charging cable, wall box or public pylon.Keep an eye on the number if you’re fast-charging but you can set-and-forget for a low-output overnight AC charge (potentially taking advantage of off-peak energy rates in the process). Simply switch off and uncouple when you’ve reached your desired level.To give you an example on time and charge rates, the pure-electric Renault Megane E-Tech is fitted with a 60kWh (kilowatt hour) lithium-ion battery, which Renault says will charge from 15-80 per cent, on a 130kW DC fast charger, in around 30 minutes.Switch to AC and the Megane’s 7.4kW capacity means you’re looking at a little over nine hours for a full (0-100 per cent) charge. Using domestic 10-amp, single-phase power the wait time is 30.5 hours for a full charge.PHEVs are quicker to charge given their smaller batteries and ICE power onboard. If you want to fast charge on a public DC pylon from providers like Chargefox and Evie Charging, one of the motoring clubs like RACV or NRMA or the Tesla Supercharger network, here’s how it goes.For reference, DC EV charge pylons in Australia will typically range from 50kW to 350kW output with a handful of 400kW Ampol Amplify sites now in place. Best to start by downloading the relevant app and setting up an account for the option that works best for you.Once that’s in place, using Evie as an example, the app has a location map showing where your nearest charging site is, how many plugs are available, $/kWh (dollars per kilowatt hour) rate, the maximum power of the charger and more.As you would at home, extract the (in this case, hefty) cable from the pylon, open the car’s charge port door and plug in. The pylon readout screen will tell you a connection has been made and encourage you to press start.A swipe card to use on the pylon’s payment mat is another option to get things underway.Once the charge has started the pylon will keep you updated on the rate of charge and the battery filling up can be monitored in the same way you would at home.Press stop when you’re ready, the charge will subside and the machine will allow you to take out the connector cable and replace the plug. Job done.And if you’re wondering how much it costs to charge your EV at home versus a public outlet, we’re recently done the arithmetic here.That’s about it. Good luck on your EV charging adventure.Drop questions in the comments section below. And EV old-hands, feel free to add your two bob’s worth in the comments, as well.