Inverter generator KSB 21i S

Name: Inverter generator KSB 21i S
Brand: ‎K&S BASIC
SKU: 4260405363889
Price: 395.95 EUR
Availability: InStock

Available

€395,95

Specification

Voltage, V:	230
Max power, kW:	2.0
Nominal power, kW:	1.8
Engine start:	Manual
Outlets:	2 × Schuko 230 V

Specification

Voltage, V	230
Max power, kW	2.0
Nominal power, kW	1.8
Power factor, cosφ	1
Frequency, Hz	50
Current (max), A	8.7
Outlets	2 × Schuko 230 V
Engine start	Manual
Fuel tank volume, l	4
Noise level Lpa (7m)/Lwa, dB	62/87
Power output DC, V/А	12V/5A
Engine model	KSB 100i
Engine cylinder volume, cm3	79.7
Engine type	Gasoline 4 stroke cycle engine
Engine power, hp	3.3
Possibility of parallel connection	+
Crank case volume, l	0.35
Alternator winding	Сopper
Protection class	IP23M
Special features	Inverter technology, Soundproof housing, Compact size, Alternator with copper winding, Universal control panel, Eco mode, Parallel connection capability, Accessory kit
Includes	Generator, Packaging, User manual, Spark plug wrench, 2×16A Schuko plugs, 6.0 mm PH2 Screwdriver, Battery charging clamps
Gross dimensions (LxWxH), mm	540×325×490
Net weight, kg	21
Gross weight, kg	23.0
SKU	KSB 21i S
Barcode	4260405363889

Variants

Max Power:

Benefits

Quiet and comfortable operation – Runs at just 62 dB, ensuring peaceful use in campsites or residential areas.
Reliable power – Delivers up to 2 kW maximum and 1.8 kW rated power for everyday tasks.
Safe for electronics – Inverter technology produces a pure sine wave for laptops, phones, medical equipment, and other sensitive devices.
Eco mode – Reduces engine speed, lowering fuel consumption and extending runtime.
Parallel connection option – The built-in port enables connecting two units to double the power.

Features

The KSB 21i inverter generator — clean and quiet energy anywhere. Delivering up to 2 kW of stable pure sine wave output, it safely powers sensitive electronics such as laptops, routers, and medical equipment. It operates extremely quietly — just 62 dB, comparable to a normal conversation. Weighing 21 kg, this generator is a compact choice, ideal for camping, backup power at home or garden workshops. Eco mode reduces RPM at low loads, decreasing fuel consumption and noise, while the optional parallel connection easily increases output. Reliable, portable, EURO 5-compliant — built for everyday comfort and confidence.

Pure sine wave

The built-in electronic unit with microprocessor control monitors the operation of the generator and provides a stable output voltage of 230V 50Hz sinusoidal form, which is suitable for the reliable operation of sensitive electronics.

Compact size

The compact size and light weight of K&S Basic TM inverter generators make them convenient to use and store. Thanks to easy transportation, the field of application of these devices is significantly expanded and makes them indispensable assistants during outdoor recreation, camping, fishing and hiking.

Reliable engine

The modern engine features increased wear resistance, stable long-term operation, and meets all European quality standards, including the modern EURO 5 environmental standard.

Alternator with 100% copper winding

K&S Basic inverter generators are equipped with a high-quality brushless alternator with 100% copper winding. The reliable and compact alternator, installed on permanent magnets in a plastic housing, can withstand maximum loads without damage and ensures long-lasting and stable operation of the generator.

universal control panel

The panel provides monitoring of all key operating parameters, an ECONOMY MODE switch that reduces fuel consumption by up to 50%, a Reset button for system reboot and voltage restoration.

Low noise level

The soundproof housing ensures a minimal noise level (62 dB Lpa 7m), comfortable operation, and easy transportation.

Accessory kit

Included: 16 А Schuko plug, candle key, PH2 screwdriver 6.0 mm, battery charging clamps.

Parallel connection

You can double the output power by connecting two inverter generators together using special KSВ PC-1 parallel connection cables from K&S Basic (not included in the kit). When connected in parallel, power loss is 0.2 kW of the total rated output.

Benefits

Quiet and comfortable operation

Runs at just 62 dB, ensuring peaceful use in campsites or residential areas.

Reliable power

Delivers up to 2 kW max and 1.8 kW rated power for everyday tasks.

Safety for electronics

Inverter technology creates a pure sine wave for laptops, phones, medical equipment, and other sensitive devices.

Eco mode

Reduces engine speed, lowering fuel consumption and extending runtime.

Parallel connection option

Built-in port enables connecting two units to double the power.

Convenient control

LED indicators for oil level and operation status, with easy access for maintenance.

Specification

Inverter generator KSB 21i S

Voltage, V	230
Max power, kW	2.0
Nominal power, kW	1.8
Power factor, cosφ	1
Frequency, Hz	50
Current (max), A	8.7
Outlets	2 × Schuko 230 V
Engine start	Manual
Fuel tank volume, l	4
Noise level Lpa (7m)/Lwa, dB	62/87
Power output DC, V/А	12V/5A
Engine model	KSB 100i
Engine cylinder volume, cm3	79.7
Engine type	Gasoline 4 stroke cycle engine
Engine power, hp	3.3
Possibility of parallel connection	+
Crank case volume, l	0.35
Alternator winding	Сopper
Protection class	IP23M
Special features	Inverter technology, Soundproof housing, Compact size, Alternator with copper winding, Universal control panel, Eco mode, Parallel connection capability, Accessory kit
Includes	Generator, Packaging, User manual, Spark plug wrench, 2×16A Schuko plugs, 6.0 mm PH2 Screwdriver, Battery charging clamps
Gross dimensions (LxWxH), mm	540×325×490
Net weight, kg	21
Gross weight, kg	23.0
SKU	KSB 21i S
Barcode	4260405363889

ATTENTION! The product is sold without engine oil or gasoline. Before the first start, engine oil for four-stroke gasoline engines must be added. We recommend 10W-30 or 10W-40 oil. Always check the oil level before each use. Use only unleaded gasoline with an octane rating of 90–95 containing no more than 10% ethanol.

Instructions

Inverter generator in Soundproof Housing KSB 21i S, KSB 30i S, KSB 40iE S

Instruction | Inverter generators K&S Basic

K&S Basic Catalog (2023)

Catalog | Generators

Video Reviews

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Overview & Start of KSB 21i S Inverter Generator (2 kW)

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tres bonne appareil

Thank you, Jean-luc! We're glad you're satisfied with the KSB 21i S inverter generator. If you need any assistance in the future, feel free to reach out!

sehr gut

The Generator is good.
Filling oil was messy.
Makes more noise than expexted after seeing a picture on the campingsite, man reading book with generator elektricity supply.....
Delivery took two weeks, first sent to near Heilbronn ???? Than to Essen near the factory ??? In Dusseldorf.
And than to the Netherlands via Amsterdam.
It is ok and i hope that i never have to sent it for repair if that takes two weeks go and two weeks return....
Merry christmas an prosporus new year.