Hyundai 3.3kW / 3300W Inverter Generator, Recoil Start, Pure Sine Wave | HY3900Si

£499.00 inc. VAT
£415.83 ex. VAT
Product will be shipped after 6th Apr 2026
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Reliable 3.3kW inverter power for larger caravans, motorhomes and off-grid leisure

When a 2kW generator is not quite enough for your setup, the next step up matters. The Hyundai HY3900Si delivers 3.3kW / 3300W maximum output and 3kW / 3000W continuous from a 144cc four-stroke engine. That extra headroom means you can run a caravan fridge, charge multiple devices, power lighting and still have capacity left over. The pure sine wave output keeps sensitive electronics safe, while the ECO mode stretches your fuel when full power is not needed. At 21.15kg, it is still portable enough for one person to move.

Key Benefits

Enough power to run multiple appliances at once

With 3.0kW continuous output, the HY3900Si handles combinations that smaller generators cannot. Run a fridge, charge your devices and power lighting simultaneously without worrying about overload. Ideal for larger caravan and motorhome setups.

Pure sine wave output for clean, safe power

The inverter technology produces stable electricity with low harmonic distortion. Connect laptops, televisions, games consoles and other sensitive electronics with confidence.

ECO mode for fuel efficiency and reduced noise

When you are drawing less than full load, ECO mode automatically reduces engine speed, reducing noise and giving better fuel economy. This extends the runtime in between refueling.

Industrial blue socket for higher-draw equipment

The HY3900Si features a 16A industrial blue socket for connecting equipment that draws more than a standard connection. The 3-in-1 digital meter lets you monitor output in real time.

Who Is This For?

This generator is ideal for:

  • Caravan and motorhome owners with larger power requirements
  • Glamping and off-grid leisure setups wanting dependable mid-range power
  • Boat owners and marina users needing portable shoreside power
  • Garden parties and outdoor entertaining where mains power is not available
  • Allotment holders and rural property owners needing seasonal off-grid power

This generator is NOT ideal for:

  • Lightweight camping trips where minimum weight matters — the HY2350Si is lighter and quieter
  • Extended use where longer runtime is critical
  • Users who need electric start convenience — this model uses recoil start only

What's In The Box

  • Hyundai inverter generator
  • Adjustment tools
  • User manual

Specifications

Model HY3900Si
Product Type Inverter Generator
Start Method Recoil Start
Maximum Output 3300W
Continuous Output 3000W
Run Time @ 10% Load 6.3 hours
Run Time @ 50% Load 3.6 hours
Fuel Consumption @ 50% Load Approx. 1.11 L/hr
Voltage 230V
Frequency 50Hz
Plug Socket Type UK socket
Engine Type 4-stroke, air-cooled, single-cylinder
Engine Size 144cc
Fuel / Power Source Petrol
Fuel Tank Capacity 4L
Engine Oil SAE 10W30
Engine Oil Capacity 400ml
Control Panel 1x 16A industrial blue socket, 1x cigarette lighter, 3-in-1 digital meter, ECO mode, AC Reset
Noise Level (at 7m) 67.6 dBA
Inverter Type Pure Sine Wave
Phase Single
ECO Mode Yes
Net Weight 21.15kg
Gross Weight 22.65kg
Assembled Dimensions (H x W x L) 490 x 460 x 285mm
Package Dimensions (H x W x L) 550 x 525 x 325mm
Warranty (Home) 3 years
Warranty (Commercial) 1 year
EAN 5059608505016

Reviews of Hyundai 3.3kW / 3300W Inverter Generator, Recoil Start, Pure Sine Wave | HY3900Si

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