Wallbox

What a wallbox is

Wallbox is the informal name for a dedicated Level 2 home EV charger - a wall-mounted unit permanently wired to a dedicated circuit in your switchboard. The name comes from the box on the wall, and while Wallbox is also a brand name (Spanish manufacturer), “wallbox” is now used generically across the industry.

A home wallbox replaces or supplements the portable granny charger that comes with most EVs. On a standard 32A single-phase circuit, it delivers around 7.4 kW - three to four times faster than a standard 10A power outlet at 2.4 kW.

Why bother with a wallbox

The granny charger that ships with most EVs plugs into a standard 10A domestic socket and charges at about 2.4 kW. That’s roughly 12–14 km of range per hour. If you arrive home with 30% battery and need 80% by morning, you’re drawing on 6–7 hours of charge at minimum.

A 7.4 kW wallbox does the same job in 1.5–2 hours. It also charges safely on a dedicated circuit with appropriate protection - the continuous draw from overnight EV charging on an old general-purpose circuit with questionable wiring is a genuine fire risk, particularly in older homes.

What installation involves

A wallbox installation typically requires:

• A licensed electrician who is also Clean Energy Council accredited for EV charger installations
• A dedicated 32A circuit from the switchboard to the charger location (garage, carport, driveway)
• The charger unit itself - from under $500 for basic units to $1,500+ for smart chargers with load management and solar integration
• Possibly a switchboard upgrade if existing capacity is limited

Typical installed cost in Australia: $800–$1,600 for a standard single-phase 7.4 kW unit, depending on cable run length and switchboard condition.

Smart wallbox features

Entry-level wallboxes are dumb - power on, charge the car, power off. Smart wallboxes add Wi-Fi or Ethernet connectivity, enabling:

• Scheduled charging - automatically starts at off-peak tariff windows
• Load management - reduces charge rate if the household is using heavy appliances simultaneously
• Solar integration - some units (Zappi, Fronius Wattpilot, Evnex E2) can increase or decrease charge rate based on real-time solar export
• Usage logging - useful for claiming work-related EV charging costs
• Remote control - start, stop, or adjust from your phone

For most EV owners, the scheduler and solar integration features pay for the cost premium in the first year.