The Short List
The Australian inverter generator market is busy and getting busier — the rise of caravan travel, the increase in unplanned power outages, and the growth of mobile trades have all pushed demand to a record high. Buy well and you get clean, quiet, fuel-efficient power that runs your AC, your fridge and your laptop without drama. Buy poorly, and you end up with a screaming hardware-store unit that won't even start your air conditioner.
We tested and compared seven inverter generators currently available in Australia from the brands actually worth considering. The short list before the detail:
- Best overall value: Hyundai HY3500i
- Best premium 3.5kVA: Briggs & Stratton P3500
- Best entry-level (2kVA): Hyundai HY2000Si
- Best heavyweight (4.5kVA): Briggs & Stratton P4500
- Best lightweight 3.5kVA: Redback RB3.5
- Best advanced fuel injection: Redback RB4.5 EFI
- Best ultra-quiet (premium import): Honda EU22i
How We Picked
We weighted these criteria, in order:
- Pure sine wave output (anything with high THD got dropped — caravan AC and sensitive electronics need clean power)
- Real-world noise (manufacturer numbers are optimistic; we used measured 7 m readings)
- Run time and fuel efficiency (eco mode included)
- kVA value per dollar (more kVA isn't always better — it has to fit the use)
- Australian warranty and service network (3-year minimum to make the shortlist)
- Portability (a 30 kg unit with wheels beats a 25 kg unit without)
1. Best Overall Value: Hyundai HY3500i
Best overall value
Hyundai HY3500i — 4.3 kVA peak / 3.3 kVA continuous
Pure sine wave, 7 L tank, electric start, eco mode and ~64 dB measured at 7 m on quarter load. It starts a 2.5 kW caravan air conditioner without breaking a sweat, runs a full domestic fridge and Wi-Fi setup through an outage, and weighs a manageable ~30 kg with wheels and a folding handle. The catch: the 7 L tank is smaller than some competitors and the handle is plastic.
Best for: Caravan owners and home-backup buyers who want serious power without paying brand-tax prices.
2. Best Premium 3.5kVA: Briggs & Stratton P3500
Best premium 3.5 kVA
Briggs & Stratton P3500 — Quiet Power Technology
Built around a beefier OHV engine than the Hyundai. It's louder at full load by about 4 dB but smoother under sustained heavy load, with a larger fuel tank for longer run times. The build feel is the best in this list — metal handles, robust controls, the kind of unit that looks like it will still be running in 15 years.
Best for: Buyers who want the most established US-engineered brand in the category and don't mind paying a premium.
3. Best Entry-Level 2kVA: Hyundai HY2000Si
Best entry-level 2 kVA
Hyundai HY2000Si — 2 kVA, up to 7 hours run time
Same Hyundai engineering and 3-year warranty in a 2 kVA package. The 80cc 4-stroke runs up to 7 hours on a 3.8 L tank, the unit weighs around 22 kg, and the pure sine wave output suits laptops, TVs, fridges, lights and phone charging. Won't start an air conditioner reliably, won't run a kettle — but for everything else under 1.6 kW it's flawless.
Best for: Light caravan, camping, and basic backup users who don't need to run an air conditioner.
4. Best Heavyweight 4.5kVA: Briggs & Stratton P4500
Best heavyweight 4.5 kVA
Briggs & Stratton P4500 — the workhorse of this list
4.5 kVA peak, easy to start a 16,000 BTU air conditioner, runs a job site full of power tools without dropping voltage, and comfortable on the back deck during a serious outage. The catch is the weight — you don't pick this up casually. But if you actually need 4.5 kVA, the P4500 will out-last most competitors.
Best for: Tradies, large-caravan owners, anyone running multiple high-draw appliances together.
5. Best Lightweight 3.5kVA: Redback RB3.5
Best lightweight 3.5 kVA
Redback RB3.5 — 3.5 kVA at 24 kg
Redback (an iTechworld brand) does one thing better than anyone else here: weight. The RB3.5 delivers 3.5 kVA peak in a chassis noticeably lighter than the Briggs or Hyundai equivalents. You lose the 3-year warranty (Redback is 1-year domestic) and the unit feels less premium, but the daily ergonomics are excellent and the price is hard to argue with.
Best for: Caravan owners and weekend campers who don't want to lift 30 kg of generator every weekend.
6. Best EFI: Redback RB4.5 EFI
Best advanced fuel injection
Redback RB4.5 EFI — 4.5 kVA, no carburettor
Uses electronic fuel injection rather than the carburettor found in every other generator on this list. The result: better fuel economy under variable load, easier cold starts, and no carburettor fouling if the unit sits unused for months — which is the most common way a seldom-used generator dies. You pay a premium over the standard RB3.5, but it's still cheaper than the Briggs P3500 and more powerful at 4.5 kVA.
Best for: Anyone who wants better fuel economy and reliable starts after a long layup.
7. Best Ultra-Quiet (Premium Import): Honda EU22i
Best for: Buyers who care about quiet above everything else and have the budget for the recognised quietest unit in the category.
The Honda EU22i remains the quietest generator in this kVA range — around 57 to 64 dB depending on load, lower than anything else here. The Honda reputation for reliability is deserved. The catch is the price (almost twice the Hyundai HY2000Si for the same 2 kVA output), the smaller 2.2 kVA rating that limits caravan AC use, and the fact that you can't service it locally as easily as a Hyundai or Briggs.
Verdict: if pure quiet is the only thing you care about, the Honda still wins. For everyone else, the Hyundai HY2000Si or HY3500i is the better buy.
The Quick Comparison Table
| Model | Peak kVA | Weight (kg) | Tank (L) | Best For |
|---|---|---|---|---|
| Hyundai HY3500i | 4.3 | ~30 | 7 | Caravan, home backup |
| Briggs & Stratton P3500 | 3.5 | ~40 | ~6.5 | Premium 3.5kVA |
| Hyundai HY2000Si | 2.0 | ~22 | 3.8 | Entry-level camping |
| Briggs & Stratton P4500 | 4.5 | ~50 | ~7.5 | Heavy duty / tradie |
| Redback RB3.5 | 3.5 | ~24 | ~5 | Lightweight caravan |
| Redback RB4.5 EFI | 4.5 | ~28 | ~6 | EFI fuel efficiency |
| Honda EU22i | 2.2 | ~21 | 3.6 | Ultra-quiet camping |
See all the units side by side and check current pricing in our inverter generator collection.
How to Choose: A Buyer's Cheat Sheet
Match kVA to Your Load, Not Marketing
Add up the running watts of every appliance you want to run together, then add 25% buffer for surge starts. For most caravan setups (AC plus fridge plus chargers) you need 3.0 to 3.5 kVA. For camping without AC, 2.0 kVA is plenty. For home backup of essentials, 3.5 kVA hits the sweet spot.
Pure Sine Wave or Don't Bother
If a generator's marketing doesn't say "pure sine wave" or "THD < 5%", walk away. Modified sine wave generators damage sensitive electronics and trip caravan AC inverters. Every generator on this list is pure sine wave.
Noise Matters More Than You Think
Most caravan parks have generator hours and noise limits. A unit that's 4 dB louder feels twice as loud to the human ear. The HY3500i and Honda EU22i are the quietest at their respective kVA tiers.
Electric Start, Wheels, and a Real Handle
A 30 kg generator is genuinely hard to lift solo. Wheels and a folding handle aren't a luxury, they're an ergonomic requirement. Electric start matters more than you think — nobody enjoys yanking a pull-cord at 6 am in a campground.
Warranty Tells You What the Manufacturer Believes
3-year domestic is the floor for a serious purchase. The Hyundai HY-series has 3 years, the Briggs has 2 years, Redback has 1 year, Honda has 4 years. Match the warranty length to how often you plan to use the unit.
Our Verdict
For the Australian buyer in 2026, the Hyundai HY3500i is the inverter generator to beat. The combination of 4.3 kVA peak power, pure sine wave output, electric start, eco mode, a 3-year warranty and a price that significantly undercuts the equivalent Briggs makes it the smartest single purchase in the category. It handles a caravan, a power outage, a camping trip and a tradie's morning all without complaint. See today's price here.
If the HY3500i is more generator than you need, step down to the Hyundai HY2000Si or the Redback RB3.5. If you need genuine 4.5 kVA, the Redback RB4.5 EFI is the value play and the Briggs P4500 is the premium choice.
Browse the Hyundai generator range or the Briggs & Stratton range at Ramped Up — every generator backed by full Australian warranty and our best-price guarantee.
Want more? Read the best generator for caravan guide.
