Is a portable EV charger enough, or do you need a wall charger?

Most cars don't need a full charge every night. What matters is how far you drive on a normal day and how long the car sits at home. If it is parked from early evening to the next morning and your daily round trip is short, a slow overnight top-up replaces what you used.

A portable lead on a standard power point charges much more slowly than a typical wall charger. That suits a plug-in hybrid, a short commute or a second car that does school runs. It falls behind when the daily distance is long, the car is only home for a few hours, or a long Sunday drive leaves the battery low on Monday morning.

Charging pulls a heavy, steady current for hours, which is very different from a kettle that runs for two minutes. An older power point, a loose connection or a circuit shared with the laundry and garage can run warm under that load. A power point that feels warm, looks discoloured or crackles needs checking before you charge from it again.

Energy Safe Victoria says not to touch or try to repair a loose, cracked or broken power point, but to cover it and have a licensed electrician replace it. Don't run a portable lead through a household extension lead or power board, and keep the outlet out of the weather unless it is rated for outdoor use.

If the portable lead suits your driving, a dedicated outlet on its own circuit is often the best-value step. The lead gets a power point that isn't shared with anything else, mounted where the cable reaches the car without trailing across a path. Outdoors, the outlet needs a weatherproof rating.

That circuit needs safety switch protection, like every other final sub-circuit in the home under Energy Safe Victoria's guidance on the Wiring Rules. It is a smaller job than a wall charger, and if you move up to one later, at least the route from the switchboard has already been worked out.

A wall charger on its own circuit charges much faster, and most can be scheduled from the car or an app. Many also offer load management, which slows charging when the house is busy so a modest supply can carry it.

Our view: if you are charging from a portable lead every night and still finding the battery low, or you are uneasy about the outlet, it is time. If the car is topped up comfortably each morning from a sound, dedicated outlet, there is no rush.

Renters can usually use a portable lead on a sound existing outlet, but a dedicated outlet or wall charger is a change to the property and needs the rental provider's agreement. In units and townhouses with shared parking, the owners corporation usually has a say over common property and the wiring that runs through it.

Any new outlet or charger is installed by a licensed electrician, who provides a Certificate of Electrical Safety for the work. If you expect to move in a year or two, a dedicated outlet keeps the outlay modest while still giving the lead a safe supply.