How Long Does It Take to Charge an EV at Home in NZ?
Over 80% of EV charging is done at home, making it critical to choose the right setup for efficiency, cost savings, and safety. Whether you're considering buying an electric vehicle or have already made the switch, understanding your home charging options in New Zealand is essential.
AC vs DC Charging | Single vs Three Phase | Best Practices for EV Battery Health
AC or DC Charging: Which is Right for You?
For most EV drivers in New Zealand, AC charging is the go-to solution.
While DC fast chargers offer the quickest charging times, the infrastructure cost is high and most homes simply don’t have the capacity for a DC setup.
Key Insight: The faster you charge, the more wear you place on your EV’s battery.
Slow, steady AC charging is better for battery health.
- 2.6kW AC slow charge = Minimal impact on battery health
- 150kW DC fast charge = High impact,especially with frequent use
Recommendation:
Stick with AC charging for daily use.
Reserve DC fast chargers for road trips or emergency top-ups only.
Single Phase vs Three Phase Charging
Most Kiwi homes are wired for single-phase electricity, making it the most practical and affordable option.
- Single Phase 32A (7.4kW) is ideal for home use
- Three Phase 32A (22kW) is typically only found in commercial or industrial properties
Note: Some PHEVs and smaller EVs won’t benefit from 3-phase charging due to input limitations.
Single Phase - 10 Amp (Standard Home Power Outlet)
(Approx. 2.4kW Output)
Not ideal for daily use for BEV vehicles, can be fine for PHEV vehicles though.
Charging the EV from 0-100%
PHEV (e.g Mitshubishi Outlander) ~5 hrs
Small EV (e.g. Nissan Leaf) = ~17 hrs
Medium EV (e.g. Telsa Model 3) = ~29 hrs
Larger EV (e.g. Telsa Model S) = ~43 hrs
Charging the EV from 20-80%:
PHEV ~8.5 hrs
Small EV = ~10 hrs
Medium EV = ~18 hrs
Larger EV = ~26 hrs
Single Phase - 16 Amp (Caravan Connection Outlet)
(Approx. 3.6kW Output)
This is about the maximum most homes cando without a dedicated circuit upgrade.
Charging the EV from 0-100%
PHEV (e.g Mitsubishi Outlander) ~5 .5hrs
Small EV (e.g. Nissan Leaf) = ~11 hrs
Medium EV (e.g. Telsa Model 3) = ~18 hrs
Larger EV (e.g. Telsa Model S) = ~27 hrs
Charging the EV from 20-80%:
PHEV ~3.5hrs
Small EV = ~7 hrs
Medium EV = ~11 hrs
Larger EV = ~16 hrs
What’s the Best Way to Charge Your EV at Home?
Single Phase - 32 Amp (Dedicated Wall Charger)
(Approx. 7.4kW Output)
The sweet spot for residential EV owners: great balance of cost, speed, and compatibility.
IMPORTANT NOTE
Most PHEV’s have an input restriction above 16amps,
Meaning that although they can be plugged into 32amp wall chargers, they will only charge to 3.6kW (not the full 7.4kW available)
Charging the EV from 0-100%
PHEV (e.g Mitsubishi Outlander) ~ 5 .5hrs(input restriction)
Small EV (e.g. Nissan Leaf) = ~ 5.5 hrs
Medium EV (e.g. Telsa Model 3) = ~ 9 hrs
Larger EV (e.g. Telsa Model S) = ~ 13.5 hrs
Charging the EV from 20-80%:
PHEV = ~3 .5hrs (input restriction)
Small EV = ~3 hrs
Medium EV = 5.5 hrs
Larger EV = ~8 hrs
Fast EV Charging for Commercial or Fleet Use
Three Phase - 32 Amp (Dedicated Wall Charger)
(Approx. 22kW Output)
Ideal for commercial fleets or workshops with multiple vehicles and fast turnaround needs.
IMPORTANT NOTE
Many EVs only support single-phase AC charging.
A 3-phase 22kW charger will still only charge at 7.4kWon these models.
And again, most PHEV’s will have an input restriction to 3.6kW
Charging the EV from 0-100%
PHEV (e.g Mitsubishi Outlander) ~ 5 .5hrs(input restriction)
Small EV (e.g. Nissan Leaf) = ~2 hrs
Medium EV (e.g. Telsa Model 3) = ~3 hrs
Larger EV (e.g. Telsa Model S) = ~5 hrs
Charging the EV from 20-80%:
PHEV = ~ 3 .5hrs (input restriction)
Small EV = ~1.5 hrs
Medium EV = ~1.8 hrs
Larger EV = ~3hrs
What EV Charger Should You Install at Home?
Best for Most Homeowners
Single Phase 32A Wall Charger (7.4kW): A great balance between cost, speed, and battery health.
Best for Fleets/Commercial Use
Three Phase 32A Charger (22kW): Fast turnaround if your vehicles support it.
Best for Budget/Older Homes
10A-16A Plug: Slower,but sufficient for PHEVs and low distance drivers.
The Conduction Company handles EV charger installation for homes across Auckland.
For what each option costs installed, see The Conduction Company's guide to EV charger installation costs in Auckland.
How to Set Up EV Charging at Home in New Zealand
Choose a charger that suits your needs: 10A (basic), 16A (moderate), or 32A (fastest home option).
Hire a licensed electrician to ensure safe and compliant installation.
Set up a smart charging schedule to optimise efficiency and reduce costs.
Smart Charging Tips for EV Battery Longevity
Maintain Charge Between 20% to 80%
Avoid charging to 100% unless needed for a long trip, and try not to get below 20% before charging.
Most EVs allow you to set a ‘maximum charge %’
if you can set it to 80% - perfect.
Don’t Stress about ‘Topping Up’
Unlike petrol cars, you don’t need to “fill the tank” all the time.
Plug in as needed and treat your car more like a smartphone: keep it comfortably charged, not maxed out every day.
PHEVs are an exception to this rule, you might want to top these up every day to get the most out of the battery for short-range driving savings.
Avoid Fast Charging Regularly
Frequent use of DC chargers generates more heat and degrades battery health over time.
Let the BMS do it’s thing
Don’t worry too much about micromanaging.Your EV’s Battery Management System (BMS) will throttle charge speed when needed, prevent overcharging and keep things safe under the hood
Pre-Charge Delay
Although the onboard computers in most vehicles are very clever and will manage battery temperatures,
We still recommend giving your vehicle 30mins (or whatever minimum delay time you can set) to cool down fully before starting the charge.
If your charger has a built-in delay setting, we recommend using it.
The battery inside your EV will get hot when driving, which is made worse with
- Summer heat
- High-payload or towing
- Speedy driving / quick acceleration
Charge During Off-Peak Hours
Many NZ energy providers offer free power hours or cheaper night rates (usually 11pm-7am).
Take advantage of this by scheduling your charging window.
Park in the Shade
Lithium-ion batteries hate heat. If possible, parkin a garage or shaded spot.
Final Thoughts
EV charging doesn’t have to be complicated.
For most Auckland drivers, a single-phase 32A wall charger is a great solution for overnight charging. Covering your daily needs, protecting your battery, and keep your power bill in check.
If you have 3 phase at your property or manage a commercial fleet, three-phase charging may be worth the upgrade, assuming your EV supports it.
Regardless of setup, charging smart (notfast) is the best way to save money and extend your EV battery’s lifespan.
How much to charge an electric car in NZ?
Charging an electric car at home in Auckland costs about 15 to 20 cents a kWh, The Conduction Company finds. That is the rate on an Auckland night or EV power plan. Public DC fast chargers cost about 90 to 95 cents a kWh including GST, on ChargeNet's and Z Energy's published 2026 prices. So charging at home overnight costs roughly a fifth as much as a public fast charger, and charging in off-peak hours, as above, is what gets you the lower rate.
How much is a home EV charging station?
We quote on facts, not guesses. Before we give you a price, we carry out a proper assessment of your property and how you'll use your EV charger. That way you know exactly what you're buying and the total cost, with no surprises. Clear expectations from the outset, start to finish.
The estimates below are for standard installation of a home EV charger. The Conduction Company confirms final pricing after a property assessment.
16 amp charger, about 3.6 kW. From $999 including GST, supplied and installed by The Conduction Company in Auckland.
32 amp wall charger, 7.4 kW. $1,500 to $2,900 including GST, supplied and installed by The Conduction Company in Auckland.
That is the full cost to install an electric car charger at your house, charger included. In The Conduction Company's experience the charger itself is between a third and a half of the total, and the rest is labour, cable, and the protection at the switchboard. Its guide to EV charger installation cost in NZ covers what moves the price inside each range.
What are the best EV home chargers?
The best home EV charger depends on what you want it to do, and The Conduction Company works that out with you, along with your budget, before it recommends one. Some clients want every feature: dynamic load balancing, current monitoring, or different access types. Others just want to plug the car in.
For most homes, The Conduction Company's go-to recommendation is Anker. Jordan Statham, its director, rates them as really high-quality units that can do a lot, and because they send their data wirelessly rather than over a cable, they cost less to install. Where looks matter most, his pick is Evnex, at a premium to install.
Frequently asked questions
Should I charge my EV to 100% every night?
Not every night with an NMC or NCA battery, but a one-off full charge before a long trip is fine, says Jordan Statham, director of The Conduction Company. Time it to finish close to when you leave, because it is sitting full that ages the cells. For daily use, keeping the battery between 20 and 80% is the general rule, as The Conduction Company explains in its guide to the 80% rule for EV charging.
Is it cheaper to charge my EV at home or at a charging station?
At home, almost always. In The Conduction Company's experience it is always lower cost to charge at home: an Auckland night or EV power plan runs about 15 to 20 cents a kWh, against about 90 to 95 cents a kWh including GST at a public DC fast charger. A fast charger still makes sense on a long trip without enough battery to make it all the way.
