Where to Buy
Amazon UK£499.99Overview
The Hyundai HY3900Si is a compact 3.3kW inverter generator designed for caravans, motorhomes, camping, and off-grid leisure. Delivering 3300W peak power and 3000W continuous output from its efficient 144cc petrol engine, it provides clean pure sine wave electricity safe for sensitive electronics such as laptops, TVs, chargers, and gaming devices. Its enclosed portable design keeps noise levels low, while ECO mode improves fuel efficiency and runtime. Lightweight at just over 21kg, the HY3900Si is ideal for users needing more power than entry-level inverter generators without sacrificing portability.
Key Features
- 3300W peak / 3000W continuous output
- Pure sine wave inverter technology
- Safe for sensitive electronics
- Compact enclosed inverter generator design
- 144cc 4-stroke petrol engine
- ECO mode for reduced fuel consumption
- Low-noise operation at 67.6dB
- 3-in-1 digital display meter
- 16A industrial blue socket
- Lightweight 21.15kg portable build
- Recoil pull-start system
- Ideal for caravans and motorhomes
Technical Specifications
| Type | Portable Generator |
| Fuel Type | petrol |
| Peak Power | 3,300W |
| Rated Power | 3,000W |
| Noise Level | 67.6 dB |
| Weight | 21.15 kg |
| Runtime | 3.6 hours |
| Tank Capacity | 4 litres |
| Inverter | Yes |
| Electric Start | No |
| Parallel Capable | No |
| Wheels | No |
| Best Use Cases | garden, diy, camping, home backup, motorhome, events |