Engel R3000IE vs Adventure Kings 3500iO Inverter Generators

Engel R3000IE

Higher running and peak power

Wheels for mobility

More usability features

View at My Generator

Adventure Kings 3500iO

Compact and lighter

Larger fuel capacity

More affordable

View at Adventure Kings

Portable generators are handy in various situations like home backup during power outages, running multiple tools at construction sites, operating food trucks or coffee vans, or even outdoor events. The trick, however, is to find the right model that caters to your specific requirements – must be the right size, not too loud and within your budget.

Today, we’ll compare two popular portable generator models — Engel R3000IE and Adventure Kings 3500iO — on critical factors such as performance and power, fuel efficiency, physical specs and usability features.

Performance & Power

Running Power (W): The Engel R3000IE offers a running power of 3500W while the Adventure Kings model provides a slightly lower power at 3000W. Running power refers to the continuous power a generator can provide. You could comfortably run appliances like a water heater or an industrial vacuum with either of these generators.

Starting Power (W): With starting or peak power at 3500W for Engel and 3300W for Kings, these models can handle brief bursts of high-power demand when starting devices with motors.

Engine type: Both models use a petrol powered 4-stroke engine – giving you durability and enhanced fuel efficiency. The Adventure Kings model features an OHV (Overhead Valve) design offering better power output and longer engine lifespan.

Rated Output (kVA): At this measure of apparent power, the Adventure Kings model is rated slightly lower (3 kVA) than its Engel counterpart (3.5 kVA). Apparent power combines real and reactive power in your generator.

Inverter: Both these generators feature inverter technology ensuring cleaner power output – ideal for sensitive electronics like laptops. Plus, inverter generators typically offer quiet operation and improved fuel efficiency.

Fuel & Run Time

Fuel Type: Petrol powers both the Engel R3000IE and Adventure Kings 3500iO models.

Fuel Tank Capacity: The Adventure Kings model offers a larger fuel tank capacity at 12L compared to the Engel’s 8.3L.

Run Time: The Engel R3000IE promises a running time of 8.5 hours (at 50% load) while the Adventure Kings model offers 5.5 hours of operation (at full load).

Physical Specs

Dry Weight: The Adventure Kings model is considerably lighter (30.5 kg) than the Engel generator (44.5 kg) – which may affect portability.

Size: The Adventure Kings model enjoys a slight advantage with compact dimensions – occupying less space during storage and transport.

Wheels: The Engel R3000IE comes equipped with wheels for easy movement, which the Adventure Kings model lacks.

Outlets & Parallel Use

AC Outlets: Both generators offer two AC outlets for powering appliances and tools.

DC Outlets: While Engel has one DC outlet rated at 12V-8.3A, the Adventure Kings model doesn’t provide any DC outlets.

Parallel Use: Interestingly, only Engel R3000IE supports parallel use increasing power output by connecting two units together.

Features & Usability

Both models differ significantly in terms of usability features. The Engel R3000IE features both recoil and electric start systems – meaning less effort to start your generator. It also includes a fuel gauge, an oil alert system and frequency/voltage indicators. On the other hand, the Adventure Kings generator provides a recoil start system and an overload indicator light for safety purposes, plus it is air cooled to manage engine temperature.

Noise Level

There’s negligible difference in noise levels between these two models – creating a fairly quiet operational environment well suited for activities like camping or backup power at home.

Engel R3000IE vs Adventure Kings 3500iO Comparison Table

FeatureEngel R3000IEAdventure Kings 3500iO
Warranty4 Years2 Years
Engine Type212 cc, 4-Stroke208 cc, 4-stroke, OHV
Air CooledNot specifiedY
Running watts3500 W3000 W
Max / Starting watts3500 W3300 W
Voltage (AC)240 V240 V
DC Output12V, 8.3ANot specified
AC Frequency (Hz)5050
Rated Output (kVA)3.53
Fuel Tank Capacity8.3 L12 L
Run time (Hours)8.5 (at 50% load)5.5 (100% Load)
Dry Weight (Kg)44.530.5
Size (L x W x H)59 x 47.8 x 51.1 cm50 x 48 x 50 cm
Number of AC Outlets22
DC Outlets12V – 8.3ANone
Parallel useYN
Starter SystemRecoil & Electric startRecoil
Fuel gaugeYNot specified
Oil alertYNot specified
Noise Level (dBA)6766 (at idle), 74 (2KW load)


Summing it up, the Engel R3000IE offers higher performance, better mobility due to wheels and more usability features compared to the Adventure Kings 3500iO. However, the latter scores with its compactness, lightweight design and a larger fuel tank. The choice between these two will depend on your individual priorities – high power and mobility with Engel R3000IE or compactness with more fuel capacity with Adventure Kings 3500iO.