Senwei

Senwei ECO4990ES 3.5kVA Petrol Generator (Key Start)

Name: Senwei ECO4990ES 3.5kVA Petrol Generator (Key Start)
Brand: Senwei
SKU: SP-00189
Price: 256000 NGN
Availability: InStock

3.5 kVA2.8 kWPetrolKey startPortable12-month warranty

A 3.5kVA (2.8kW) petrol portable generator with electric/key start for households and small businesses needing reliable backup during power outages.

₦256,000

Pay with USDT/USDC and save 10%: ≈ ₦230,400

In stock — ready to shipSKU SP-00189

Delivery toYour state

1–2 working days · we call before the driver sets out

Ask on WhatsApp

12-month warrantyRepair or replacement, plus service and genuine parts.
Brand-new, original boxStarted and tested with you on delivery.
First order? WELCOME5 −5%Stacks with the 10% crypto discount.

Overview

The Senwei ECO4990ES is a compact portable petrol generator rated at 3.5kVA (2.8kW). It is designed to provide dependable backup power where the grid is unreliable, making it suitable for homes, small shops and offices.

Electric/key start makes it easy to get running after an outage. Its portable design lets you move it around a site or position it near the point of use while you run essential appliances and equipment.

Key features

3.5kVA (2.8kW) rated power for essential loads
Petrol-fuelled portable design for easy deployment
Electric / key start for convenient operation
Good for running fridges, lights, fans, TVs and small shop equipment
Made for homes, shops and small offices that need reliable backup

What can it power?

Typical load estimate for 2.8 kW rated output, keeping a 20% safety margin (≈ 2,333 W usable). Motors (fridges, ACs, pumps) need extra power for a few seconds at start-up — that is already counted.

Appliance	Typical watts	This generator
LED bulbs	10 W	40+
Ceiling fans	75 W	Up to 30
TV (32–43")	70 W	Up to 33
Decoder / DStv	25 W	40+
Laptops	65 W	Up to 35
Fridge	150 W (×3 at start)	Up to 13
Chest freezer	200 W (×3 at start)	Up to 9
Air conditioner 1 HP	900 W (×3 at start)	Too big for this unit
Air conditioner 1.5 HP	1,300 W (×3 at start)	Too big for this unit
Air conditioner 2 HP	1,800 W (×3 at start)	Too big for this unit
Pumping machine 1 HP	750 W (×3 at start)	Up to 1
Microwave	1,000 W	Up to 2
Electric iron	1,000 W	Up to 2
Hair dryer (hood)	1,200 W	Up to 1

A typical mix it can run together: 8 × LED bulbs, 3 × Ceiling fans, TV, Decoder, Fridge, Chest freezer.

Typical load estimate only — real consumption depends on your appliances. Numbers in the table are “one type at a time”. Check your exact list with the power calculator or send it to us on WhatsApp.

Specifications

Brand	Senwei
Model	ECO4990ES
Rated power	3.5 kVA / 2.8 kW
Fuel	Petrol
Starting	Key start
Type	Portable
Warranty	12 months
SKU	SP-00189
Fuel Type	Petrol
Generator Type	Portable
Starting System	Electric / Key Start

What's in the box

Senwei ECO4990ES generator
User manual

Delivery & installation

We confirm your order

A Steady Power agent calls or WhatsApps you to confirm the model, address and delivery day.

Delivery to your door

Lagos 1–2 working days, Abuja & Port Harcourt 2–4, other states 3–7. Large sets come by truck with offloading.

Unboxing & test run

We unbox with you, add oil and fuel and start the generator so you see it working before you sign.

Installation & ATS on request

Our engineers can install it and fit an automatic changeover (ATS). The price is agreed before any work.

Warranty & service

12 months cover

From the delivery date, against manufacturing defects in the engine, alternator, AVR, control panel and starter.

How to claim

Send your order number and a short video on WhatsApp. We diagnose, then repair or replace — and keep you updated.

Service & parts

Oil changes, servicing and genuine spare parts in Lagos, Abuja and Port Harcourt, during and after the warranty.

Not covered: wear parts (plugs, filters, oil), wrong fuel, running without oil, overloading, water or physical damage. Full warranty terms

Payment options

Bank transfer

Order online, see our company account on your order page, transfer from your bank app and tap “I've paid”.

USDT / USDC — 10% off

Pay on a secure crypto payment page and save 10%. Price with crypto: ≈ ₦230,400.

WELCOME5 −5%

On your first order. Stacks with the crypto discount.

Questions about this generator

What can the ECO4990ES power?

At 2.8 kW rated output, with a 20% safety margin, it can typically run: 8 × LED bulbs, 3 × Ceiling fans, TV, Decoder, Fridge, Chest freezer at the same time. This is an estimate — send us your list on WhatsApp or use the power calculator to check your exact load.

Does it run on petrol?

Yes — regular PMS (petrol) from any filling station. Always use clean fuel and fresh engine oil; we explain the oil type and running-in on delivery.

How do I start it?

With the key — electric start, no pull cord. The starter battery should be charged; the generator keeps it topped up while running.

Is it loud?

Open-frame portable generators are noticeably louder than soundproof sets. Place it outdoors, at least 5 metres from doors and windows, never inside the house or a closed garage.

Is it brand-new and genuine?

Yes. Every Senwei unit we sell is new, in the original manufacturer's box, with its manual and accessories.

What does the warranty cover?

12 months from delivery against manufacturing defects — engine, alternator, AVR, control panel and starter. We repair or replace. See Warranty & service.

How fast can you deliver?

Usually 1–2 working days in Lagos and 2–4 working days to Abuja and Port Harcourt; other states on request. We call or WhatsApp you before the driver sets out.

Can I pay with crypto?

Yes — in USDT or USDC, and you save 10%. Choose “Crypto” at checkout and pay on a secure crypto payment page. Bank transfer is the other option.

Where do I service it?

Talk to us on WhatsApp — we arrange servicing and genuine spare parts in Lagos, Abuja and Port Harcourt, during and after the warranty.