The Könner & Söhnen KS 2000i S is a compact petrol inverter generator with a stable 230V pure sine wave output for compatible sensitive electronics. It provides 1.8kW rated power and 2.0kW maximum power, while its 19kg weight, integrated carrying handle and enclosed housing make it well suited to camping, mobile work and light backup use.
Free delivery to mainland Great Britain only.
At a glance
| Rated / maximum power | 1.8kW / 2.0kW |
|---|---|
| Output | 230V, 50Hz pure sine wave |
| Socket | 1 × UK 13A household socket — 230V |
| Starting | Recoil |
| Runtime | 5.5 hours at 50% load; up to 8 hours at 25% load* |
| Fuel tank | 5 litres |
| Net weight | 19kg |
*Fuel consumption and runtime vary with load, fuel quality, season, altitude and generator condition.
Why choose the KS 2000i S?
- Pure sine wave output: stable 230V, 50Hz power for compatible sensitive electronics.
- Compact and portable: a 19kg enclosed design with an integrated carrying handle.
- Economy mode: lowers engine speed at lighter loads to reduce fuel consumption and noise.
- Useful charging ports: USB QC 3.0 and USB Type-C connections for compatible devices.
- Clear controls: LED display for voltage, frequency and operating hours, plus low-oil and overload indicators.
- Parallel-ready: compatible with a separately available parallel connection unit.
- Quiet enclosed housing: rated at 62dB(A) at 7 metres.
Power, fuel and connections
Plan for rated power
Use the 1.8kW rated output for normal load planning. The 2.0kW maximum rating is for brief starting peaks. For prolonged operation, the manual recommends no more than 80% of rated power.
Petrol operation
Use unleaded petrol rated 90–95 octane with no more than 10% ethanol. The generator is supplied without petrol or engine oil.
Parallel connection
A compatible parallel unit can pair this generator with another suitable Könner & Söhnen inverter generator for increased output. Confirm compatibility before purchase.
Technical specifications
| Voltage / frequency | 230V / 50Hz |
|---|---|
| Rated power | 1.8kW |
| Maximum power | 2.0kW |
| Maximum current | 8.7A |
| Power factor | 1 |
| AC socket | 1 × UK 13A household socket — 230V |
| USB outputs | USB QC 3.0 and USB Type-C |
| Parallel connection | Yes — compatible parallel unit required |
| ATS connection | No |
| Protection class | IP23M |
| Engine | KS 100i, 79.8cm³, single-cylinder four-stroke petrol, air-cooled |
|---|---|
| Engine power | 2.5hp |
| Starting | Recoil |
| Fuel tank | 5 litres |
| Runtime at 50% load | 5.5 hours* |
| Runtime at 25% load | Up to 8 hours* |
| Crankcase capacity | 0.35 litres |
| Approximate generator dimensions | 460 × 285 × 500mm |
|---|---|
| Packed dimensions | 570 × 350 × 565mm |
| Net weight | 19kg |
| Noise level | 62dB(A) at 7m / 90dB(A) sound power |
*Fuel consumption and runtime vary with load, fuel quality, season, altitude and generator condition.
What's included
- KS 2000i S inverter generator
- Spark plug wrench
- PH2 screwdriver
- Accessory case
- Operating instructions
Before first use
- The generator is supplied without engine oil or petrol. Do not start it until the correct oil has been added.
- Use four-stroke petrol engine oil; the manufacturer recommends SAE 10W-30 or 10W-40.
- Use unleaded petrol rated 90–95 octane with no more than 10% ethanol.
- Operate outdoors in a well-ventilated area on a firm, level surface, away from doors, windows and combustible materials.
- Read the owner's manual before starting, and connect appliances only after the engine is running steadily.
Manuals and downloads
Warranty
Manufacturer's warranty: 1 year or 1,000 operating hours, whichever comes first, from the date of purchase.
The warranty covers manufacturing defects, subject to the manufacturer's warranty conditions. Eligible faults may be repaired or the product replaced. Retain your proof of purchase and any completed warranty documentation supplied with the generator.
For help with a warranty claim, contact Energian with your order number, generator serial number and a description of the fault.
Frequently asked questions
Is the KS 2000i S suitable for sensitive electronics?
Yes. Its inverter system produces a stable 230V, 50Hz pure sine wave output. Keep the connected load within the generator's ratings.
Can it run large appliances?
This is a compact 1.8kW rated generator intended for compatible light loads. Check each appliance's running and starting requirements before connection.
Can two generators be connected together?
Yes. A separately available compatible parallel unit can connect two suitable Könner & Söhnen inverter generators.
Can it start automatically during a power cut?
No. The KS 2000i S uses recoil starting and does not have an ATS input.
Energian support
For help choosing a generator contact Energian on 020 8064 0335 or info@energian.co.uk. For after-sales support, have your order number and generator serial number ready.