# OLTEANP 2500W Pure Sine Wave Inverter, 12V to 240V, UPS

Source: https://www.ranked10.co.uk/tech/best-pure-sine-wave-inverters/olteanp-2500w-pure-sine-inverter
Ranked #6 in "Best Pure Sine Wave Inverter 2026: 10 Ranked, and Why the Peak Wattage Misleads": https://www.ranked10.co.uk/tech/best-pure-sine-wave-inverters

- Price: £169.99 (checked on Amazon UK on 2026-09-16)
- Amazon rating: 4.8 from 47 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B0FB2KQXK7?tag=ranked10-21

The OLTEANP 2500W is a 12V DC to 240V AC pure sine wave inverter with a built-in UPS function, a 25A battery charger and a wired LCD remote on a 15ft cable. It takes sixth place in this guide at £169.99, rated 4.8 out of 5 from 47 ratings.

The listing is where the interesting part is. The title leads with 5000W peak, but the product page's own Peak Output Power Watts field reads 2500 — the same figure as the continuous rating, not double it. The Wattage field says 2499.99 watts and the Inverter Capacity Volt-Amp field says 2500, so nothing in the specifications backs up the 5000W in the title. There is a second number that does not close: the rating breakdown of 5★ 87, 4★ 10 and 3★ 3 adds up to 100, while the headline count elsewhere on the same listing says 47. Everything on this page comes from the Amazon listing itself, not from any testing we carried out.

## Specification

| Field | Value |
|---|---|
| Price | £169.99 |
| Amazon rating (as listed) | 4.8 out of 5, from 47 ratings |
| Rating breakdown (as listed) | 3★ 3, 4★ 10, 5★ 87 — 100 in total, against the 47 ratings stated elsewhere |
| Continuous power | 2500W, with the Wattage field listed as 2499.99 watts |
| Peak Output Power Watts (as listed) | 2500 — the 5000W peak in the title does not appear in this field |
| Inverter Capacity Volt-Amp | 2500 |
| Input and output | 12V DC in, 240V AC out, pure sine wave |
| Auto switch time | 12ms, as stated in the listing bullets |

## Questions people ask

**Is the OLTEANP 2500W actually a 5000W inverter?**

The title says 5000W peak, but the listing's own Peak Output Power Watts field reads 2500, and the Inverter Capacity Volt-Amp field is also 2500. Plan around 2500W.

**What can the OLTEANP-2500W-PS run?**

The bullets name a boiler circulation pump, a sump pump, lights, mobile phones and monitors. The model number is OLTEANP-2500W-PS and it is a pure sine wave unit, which suits motors and electronics.

**Does it charge the battery as well as invert?**

Yes. The listing describes a built-in 25A battery charger that supports various battery types, plus an adjustable cut-off voltage you can set between 9.5V and 11V to avoid over-discharging.

**How fast does it switch over during a power cut?**

The bullets state a 12ms automatic switch time and a UPS function, so the inverter moves to battery power when the grid fails.

**What is in the box?**

Box Contents lists the power inverter. The listing also describes a 15ft wired LCD remote controller showing voltage, power and battery level.

**What are the physical details?**

The item measures 30 x 30.5 x 12 centimetres, weighs 5.2kg, is listed in grey and is made in China. The EU spare part availability duration is given as 5 years.