Cromtech Outback 2.4kW vs Yamaha EF2800i Inverter Generators

Cromtech Outback 2.4kW

Lighter dry weight

More power outlets

View at My Generator

Yamaha EF2800i

Higher running and starting power

Larger fuel tank capacity

View at My Generator

Portable generators are great handy tools, especially for outdoor adventures or as a convenient backup in case of power outages. Yet, choosing the right one might be challenging. It’s important to find a generator that fits your budget, has the right power output and isn’t too loud. Let’s explore the Cromtech Outback 2.4kW and Yamaha EF2800i inverter generators to figure out which one might suit you best.

Performance & Power

Running Power: The Cromtech Outback 2.4kW offers 2100 running watts, whereas the Yamaha EF2800i provides an increased output of 2800 watts. This indicates how much continuous power they can provide; it’s crucial not to exceed this wattage with your connected appliances. For example, both could handle appliances like a large air conditioning unit (2000W) comfortably.

Starting Power: With regards to peak wattage needed briefly when devices start up, the Cromtech machine can deliver 2400 watts while the Yamaha generator can provide a stronger output at 4000 watts. The greater starting power of the Yamaha may be worth considering if your tools need a big power burst to initiate.

Engine type: Both generators have OHV (Overhead Valve) engines: Cromtech has a smaller 79cc engine while Yamaha employs a bigger 171 cc motor.OHV usually leads to better fuel efficiency and a longer lifespan.

Rated Output (kVA): The Yamaha model has a rated output of 2.5 kVA but unfortunately, we couldn’t get this data for the Cromtech model.

Inverter Technology: Both units feature inverter technology which allows cleaner energy production suited to sensitive electronic devices and contributes to quieter operation plus improved fuel efficiency.

Fuel & Run Time

Both units run on petrol.

Fuel Tank Capacity: The Yamaha model has more than double the fuel capacity (11.2L) of Cromtech’s model (5.0L). This suggests the Yamaha generator can operate for longer without needing to refuel.

Run Time: The Cromtech claims a varied runtime of 5 to 20 hours, while Yamaha’s unit operates for a solid 17 hours at 1/4 load. Depending on usage, both generators provide respectable periods of operation before needing to refuel.

Physical Specs

Dry Weight: Cromtech’s model is significantly lighter (19.8kg) than the weightier Yamaha generator (29kg). A lighter weight makes shifting the generator around easier.

Size: The units are close in size but follow different design principles – Cromtech being longer but slimmer (51.2 x 31.5 x 44.7 cm), and Yamaha more compact and squarish (48.7 x 39.5 x 42.5 cm).

Wheels: Neither model comes with wheels but ports are provided for added portability.

Outlets & Parallel Use

AC Outlets: Both generators come with 2 AC outlets for plugging in domestic tools and appliances.

DC Outlets: The Cromtech model offers significant versatility here with 2 USB ports and a 12V-8A outlet suitable for charging batteries or small devices like mobile phones and laptops. Remarkably, this feature doesn’t exist in the Yamaha EF280gei determined by available data.

Parallel Use: The data did not specify whether these generators can be paralleled to increase output power.

Features & Usability

The Cromtech outranks its competitor brands by including a safety low oil alert indicator and useful accessories such as a dust cover. Both models utilise reliable, though manually intensive, recoil start systems.

Noise Level

With their noise levels, the Cromtech ranges from 52 to 59 dBA at no load and increases to 60-64 dBA at the rated output. Comparatively, Yamaha’s model maintains a steady noise level of 60 dBA. To put this in context, their noise levels are equivalent to normal conversation volume (60-70 dBA).

Cromtech Outback 2.4kW vs Yamaha EF2800i Comparison Table

FeatureCromtech Outback 2.4kWYamaha EF2800i
Warranty2 Years4 Years
Engine Type79cc, OHV, 4-Stroke171 cc, OHV, 4-stroke
Air CooledYY
Running watts2100 W2800 W
Max / Starting watts2400 W4000 W
Voltage (AC)230 V230 V
DC Output12V-8AN/A
AC Frequency (Hz)5050
Rated Output (kVA)Not specified2.5
Fuel Tank Capacity5.0L L11.2 L
Run time (Hours)5 to 20hr17 at 1/4 load
Dry Weight (Kg)19.8kg29
Size (L x W x H)51.2 x 31.5 x 44.7 cm48.7 x 39.5 x 42.5 cm
Number of AC Outlets2x Single Phase2
DC Outlets2x USB, 1x 12VNone
Parallel useNot specifiedN
Starter SystemRecoilRecoil
Fuel gaugeNot specifiedY
Oil alertYY
Noise Level (dBA)52-59 db at 7m eco mode no load
60-64 db @ 7m continuous rated output


The Cromtech Outback 2.4kW is more portable due to its light weight and compact design, and offers versatile power outlet options including DC and USB ports. It may be an ideal choice for users who require standard power capacity and prioritise portability and convenient outlets.

However, if you need a higher power capacity to handle larger tools or appliances and a longer runtime before refuelling, the Yamaha EF2800i could suit you better. Its robust engine also makes it potential for more demanding applications or heavier-duty needs.

Overall, your final choice between these two reliable models will depend on what aspects you value the most in a generator.