Autumn and winter storms can bring power cuts, and a few hours without electricity means no lights, no phone charging and a fridge slowly warming up. A portable inverter generator kept on standby is a practical way to keep the essentials running, and the same machine can travel with you in a caravan or to a campsite the rest of the year. Unlike a conventional generator, an inverter model adjusts its engine speed to the load, so it runs more quietly and uses less fuel. It also produces pure sine wave power that is safe for laptops, phones and TVs.
Hyundai Power Equipment sells a range of petrol inverter generators in the UK. This guide compares six of them, from an 18 kg 2kW model to a 5.5kW machine for large motorhomes, so you can match the generator to what you actually need to keep running during an outage.
Visit the Official Hyundai Power Equipment Site
In this guide
- Six Hyundai Inverter Generators Compared
- HY2350Si: The Lightweight 2kW Option
- HY2250SEi: 2.2kW With Electric Start
- HY3250SEi: 3.2kW for Bigger Setups
- HY3900Si: 3.3kW With a 16A Blue Socket
- HY6250SEi: 5.5kW for Large Motorhomes
- HY3750i: Open Frame Power for Site Work
- How to Choose the Right Size
- Planning for a Power Cut
- Using a Generator Safely
- Conclusion
- Frequently Asked Questions
Six Hyundai Inverter Generators Compared
Specifications and prices are taken from hyundaipowerequipment.co.uk at the time of writing. Run times depend on load and are quoted by Hyundai.
| Model | Max output | Start | Weight | Run time (Hyundai figures) | Price |
|---|---|---|---|---|---|
| HY2350Si | 2.0kW | Recoil | 18 kg | Up to 14.5 h at 10% load, 5.7 h at 50% | 346 pounds |
| HY2250SEi | 2.2kW | Electric | 22.6 kg | 7.5 h at 50% load | 463.99 pounds |
| HY3250SEi | 3.2kW | Electric | 26.5 kg | Up to 13.8 h at 10% load in ECO mode | 629.99 pounds |
| HY3900Si | 3.3kW (3.0kW continuous) | Recoil | 21.15 kg | Not stated | 523.99 pounds |
| HY6250SEi | 5.5kW (5.0kW continuous) | Electric | See product page | Up to 21.7 h at 10% load, 6 h at 50% | 944.99 pounds |
| HY3750i (open frame) | 3.3kW (3.0kW continuous) | Recoil | 26 kg | Up to 14 h at 10% load, 5.8 h at 50% | 314.99 pounds |
HY2350Si: The Lightweight 2kW Option
The HY2350Si is the one to choose if weight matters most. At 18 kg it is light enough to lift into a car boot, and its 4 litre tank gives up to 14.5 hours at light load. Hyundai quotes 61 dBA at 7 metres at 50% load, and an ECO mode lowers engine speed further when demand is low. It is aimed at caravans, motorhomes, campers and small market stalls. See the HY2350Si.
HY2250SEi: 2.2kW With Electric Start
If you would rather not pull a recoil cord, the HY2250SEi starts at the turn of a dial. It offers 2.2kW maximum output, two UK 13A sockets and a 12V DC outlet, plus an LCD display showing voltage, frequency, run time and fuel level. Its 6 litre tank gives about 7.5 hours at 50% load, and it runs at 61 dB at 7 metres. Overload protection and low-oil shutdown are built in.
HY3250SEi: 3.2kW for Bigger Setups
The HY3250SEi steps up to 3.2kW while staying portable at 26.5 kg. It has electric start, two 13A sockets, a 12V DC outlet and a detailed LCD display. Hyundai quotes 59 dB at 7 metres at 75% load and up to 13.8 hours at 10% load in ECO mode from its 7 litre tank. It can also plug into a caravan or motorhome hook-up.
Compare Hyundai Inverter Generators
HY3900Si: 3.3kW With a 16A Blue Socket
The HY3900Si delivers 3.3kW maximum and 3kW continuous from a 144cc four-stroke engine, yet weighs just 21.15 kg. Hyundai pitches it at larger caravans and motorhomes, where it can run a fridge, charge devices and power lighting at the same time. It also has a 16A industrial blue socket for higher-draw equipment and a 3-in-1 digital meter.
HY6250SEi: 5.5kW for Large Motorhomes
For the biggest loads, the HY6250SEi offers 5.5kW peak and 5kW continuous with electric start. Hyundai says it can power a fridge, microwave, lighting and entertainment system together, and the 5.5kW peak helps with motor start-up surges. Its 11 litre tank gives up to 21.7 hours at light load and 6 hours at 50% load. See the HY6250SEi.
HY3750i: Open Frame Power for Site Work
The HY3750i is the value choice at 314.99 pounds. It is an open-frame inverter with 3.3kW maximum and 3kW continuous output, and at 26 kg it is far lighter than a conventional generator of similar output. It is aimed more at trades and site work than campsites, with two 13A sockets, a digital readout and a 7.5 litre tank.
How to Choose the Right Size
- Add up the wattage of everything you want to run at the same time, and leave some headroom.
- Remember that electric motors, such as fridges and pumps, can draw two to three times their rated power on start-up.
- For phones, laptops, lights and a small fridge, 2kW to 2.2kW is usually enough.
- For a caravan with more appliances, look at 3.2kW to 3.3kW.
- For a large motorhome with a microwave or air conditioning, consider 5.5kW.
Planning for a Power Cut
Before you need it, decide which essentials matter most: usually lights, phone and laptop charging, the fridge or freezer and perhaps a TV or radio for news. Because the generator must stay outside, you will need suitable outdoor-rated extension leads to bring power to those appliances. Store fresh petrol safely, start the generator now and then so you know it works, and check the product manual for maintenance intervals. Hyundai positions its inverter models for emergency standby, so they suit occasional outages rather than long-term off-grid living. Find a standby generator.
Using a Generator Safely
Hyundai is clear that petrol generators must never be used indoors because of the risk of carbon monoxide poisoning. Always run them outside in a well-ventilated area. Hyundai also states that its inverter generators are designed for leisure and emergency standby use, not as a continuous daily or off-grid power supply. For heavy-duty commercial use, it recommends a conventional 3000rpm generator. Its domestic inverter generators come with a 3-year platinum domestic warranty and 1-year commercial warranty, with terms applying.
Conclusion
Choose the HY2350Si if you want the lightest generator, the HY2250SEi for electric start in a compact size, and the HY3250SEi or HY3900Si for larger caravans. Go for the HY6250SEi if you need serious power, or the HY3750i for value and site work. Whichever you choose, check the product page for current prices and stock. Shop Hyundai inverter generators.
Frequently Asked Questions
What is the lightest Hyundai inverter generator in this guide?
The HY2350Si, which weighs 18 kg.
Are Hyundai inverter generators safe for laptops and TVs?
Hyundai says their pure sine wave output is safe for sensitive electronics such as laptops, phones and TVs.
Can I run a generator in my garage or tent?
No. Hyundai warns that petrol generators must never be used indoors because of the risk of carbon monoxide poisoning.
Can I use an inverter generator as my main power supply?
Hyundai says its inverter generators are designed for leisure and emergency standby use, not continuous daily or off-grid use.
