A clear, modern guide to 10A, 15A and 32A portable EV chargers — including real charging speeds, outlet requirements and what Australian EV owners need to know.
Key Takeaways
- Portable EV chargers plug into standard household outlets (10A, 15A or 32A).
- Charging speed depends on outlet amperage and your EV’s onboard charger.
- 10A = 2.4kW, 15A = 3.3kW, 32A = 7.2kW (single‑phase).
- Portable chargers are essential for travel, emergencies and flexible charging.
- Australia’s grid and outlets vary — always match the charger to the outlet.
Related charging guides: Home Charging Guide • 7.2kW vs 3.3kW • Charging Cables Guide
Portable EV chargers are compact charging units that plug into standard household power outlets. They are essential for EV owners who want flexible, reliable charging at home, work or while travelling. In Australia, portable chargers typically operate on 10A, 15A or 32A outlets, each offering different charging speeds.
This guide explains how portable chargers work, how fast they charge, and which option is best for your EV and home setup.
Understanding Portable EV Chargers
What Is a Portable EV Charger?
A portable EV charger (often called a “granny cable”) is a mobile charging unit that plugs into a standard power outlet instead of a fixed wall charger. It delivers AC power to your EV’s onboard charger.
How Portable Charging Works
Portable chargers supply AC electricity. Your EV’s onboard charger converts this AC into DC to store in the battery. The faster the onboard charger and the higher the outlet amperage, the faster your EV charges.
Portable EV Charger Types: 10A vs 15A vs 32A
10A Portable Charger (2.4kW)
Plugs into a standard Australian household outlet. Ideal for overnight charging or emergencies.
- Power: 2.4kW
- Range added per hour: ~10–15 km
- Best for: Apartments, travel, backup charging
15A Portable Charger (3.3kW)
Requires a 15A outlet (larger earth pin). Faster and more stable than 10A.
- Power: 3.3kW
- Range added per hour: ~15–22 km
- Best for: Homes with 15A circuits, daily charging
32A Portable Charger (7.2kW)
Requires a 32A single‑phase outlet. Delivers the fastest portable charging available.
- Power: 7.2kW
- Range added per hour: ~35–45 km
- Best for: Homes with upgraded circuits, fast daily charging
Real‑World Charging Times
Approximate time to add 100 km of range:
- 10A (2.4kW): 7–10 hours
- 15A (3.3kW): 5–7 hours
- 32A (7.2kW): 2–3 hours
Actual speeds depend on your EV’s onboard charger. If your EV only supports 3.6kW AC charging, a 7.2kW portable charger will still charge at 3.6kW.
Which Portable Charger Should You Buy?
Choose based on your outlet, your EV’s onboard charger and your charging habits:
- Best for travel: 10A
- Best for daily home charging: 15A
- Fastest portable option: 32A
Explore premium portable chargers at EV Supply Hub: Portable EV Chargers.
Frequently Asked Questions
Can I use a portable charger in the rain?
Yes — quality chargers are IP‑rated for outdoor use. Keep the control box off the ground.
Is a portable charger safe for daily use?
Yes, if the outlet is in good condition and the circuit is not overloaded.
Do I need an electrician?
Only for 15A or 32A outlets. A standard 10A outlet requires no installation.
Final Thoughts
Portable EV chargers offer flexibility, convenience and peace of mind. Whether you’re charging at home, travelling or staying somewhere without a wall charger, a portable unit ensures you’re never stuck without power.
Explore Australia’s best portable EV chargers at EV Supply Hub.