Rank #2 in Best Portable Generators 2026: 10 Ranked, Start vs Running Watts
Aceup Energy 3800W Petrol Inverter Generator
Price and rating as shown on Amazon when we collected them. Both change.
The Aceup Energy IG4500 is the runner-up in this guide: a 223cc four-stroke petrol inverter generator sold as a 3800 W machine. The 3800 W is the starting figure. The same first bullet says 3500 rated watts, and the spec table agrees with it, listing "Starting Wattage 3800 Watts" alongside "Running Wattage 3500 Watts". The run time is where the headline softens: the bullet quotes "up to 10 hours at quarter-load" from a 10 litre tank, which is a quarter of the 3500 W running rating, while the spec table simply says "Runtime: 10 hours" with no mention of the load it was measured at.
It carries 4.5 out of 5 from 22 ratings, with a breakdown of 68% five-star, 25% four-star and 7% two-star, and no ratings at one or three stars. One more number is worth reading carefully: the spec table lists "Engine Power Maximum: 4.5 Kilowatts", which is higher than the 3800 W the machine can put out of its sockets. That field describes the engine's own output, not the electricity at the outlets. Everything on this page is taken from the Aceup Energy Amazon listing — we have not run this generator ourselves.
How those 22 ratings break down
An average hides its own shape. This is the spread behind the 4.5 stars.
Specification
Exactly as published on the Amazon listing, field for field.
| Price | £342.98 |
|---|---|
| Rating | 4.5 out of 5, from 22 ratings |
| Starting wattage | 3800 W |
| Running wattage | 3500 W |
| Engine | 223cc 4-stroke OHV, recoil start, 50 Hz |
| Tank volume | 10 litres |
| Runtime | 10 hours — the bullet states this is at quarter-load |
| Engine Power Maximum | 4.5 kW (as listed) |
What buyers actually say
Quoted from customer reviews on Amazon
Verified purchase“Right back kit just what I needed for camping arrived on time good price well packed lived up to my expectations.. very pleased with this purchase and downside. I sold it on three days later because I found out that fossil fuel generators are being banned from campsites so got a battery jackery instead.”
Verified purchase“If you are looking to buy a generator then buy this one, delivered on time the delivery driver was as helpful as you would expect and want. Easy to start perfect for patio cleaning and gutters thank you.”
What it is up against
The rivals it was ranked against in Best Portable Generators 2026: 10 Ranked, Start vs Running Watts.
Questions people ask
What is the difference between the 3800 W and 3500 W figures on the Aceup Energy IG4500?
The listing gives 3800 W as the starting wattage and 3500 W as the running wattage, and repeats both in the spec table as Starting Wattage and Running Wattage.
How long does the Aceup Energy IG4500 run on a full tank?
The first bullet says up to 10 hours at quarter-load on 10 litres. The spec table lists Runtime as 10 hours without saying what load that was measured at.
What can the Aceup Energy IG4500 power?
The listing recommends it for camping, commercial use, jobsites, outages and residential use, and says it produces the clean power required by sensitive electronics such as phones and TV.
What outlets does the Aceup Energy IG4500 have?
Two 230 V AC outlets, one 12 V DC 8.3 A outlet and two 5 V USB ports. It is parallel ready for connecting two generators, with the parallel kit sold separately.
How is the Aceup Energy IG4500 started?
It uses recoil start, as stated in the first bullet and in the Ignition System Type field.
What does the 4.5 Kilowatts engine power figure on the Aceup Energy IG4500 refer to?
The spec table lists Engine Power Maximum as 4.5 kW, which is a larger figure than the 3800 W peak output the machine is sold on; the listing does not explain the gap between the two.
Comments
Reader comments are not checked against the manufacturer's claims above.
No comments yet
Be the first to add something we missed — a price change, a spec that turned out wrong, or how one of these held up.
Leave a comment
No account needed. Own one of these? Tell other readers how it actually performed.