# ECO-WORTHY 390W Bifacial Solar Panel Kit

Source: https://www.ranked10.co.uk/tech/best-solar-panels/eco-worthy-390w-bifacial-kit
Ranked #5 in "Best Solar Panels 2026: 10 Ranked, and Where the Wattage Doesn't Add Up": https://www.ranked10.co.uk/tech/best-solar-panels

- Price: £239.99 (checked on Amazon UK on 2026-09-16)
- Amazon rating: 4.5 from 103 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B09XV2G1DJ?tag=ranked10-21

The ECO-WORTHY 390W 12V Bifacial Solar Panel Kit is a two-panel setup aimed at motorhomes, caravans, boats and off-grid builds. It arrives with mounting brackets, 16ft solar cables, Y-branch connectors and a 30A charge controller, and it sits at number 5 in our guide to the best solar panels at £239.99, rated 4.5 out of 5 from 103 Amazon ratings.

Its listing is one of the clearest examples of the problem this guide is built around. The title says 390W, and the bullets and package list back that figure up, describing 2pcs of N-Type 195W panels plus a 30A controller. The spec sheet, on the same page, puts Maximum Power at 340 Watts. The efficiency figures disagree as well: the bullets claim 25% conversion efficiency, the spec sheet field says 23%. At the 390W the title promises, £239.99 works out at about 62p per watt; at the 340W the spec sheet lists, it works out at about 71p. The listing also claims 1.56kWh per day under 4 hours of full sunlight, and lists the kit at 23.5kg. Everything on this page is taken from the Amazon listing, not from testing we carried out.

## Specification

| Field | Value |
|---|---|
| Price | £239.99 |
| Customer rating | 4.5 out of 5 from 103 ratings |
| Maximum Power (spec sheet) | 340 Watts |
| Panels in the box (bullets and package list) | 2 x 195W N-type bifacial — 390W total, matching the title |
| Conversion efficiency | 25% in the bullets, 23% in the spec sheet (as listed) |
| Charge controller | 30A, with built-in short-circuit, open-circuit and over-load protection |
| Output voltage | 12 Volts (DC) |
| Item weight | 23.5 kg |

## Questions people ask

**What power output does the ECO-WORTHY 390W kit actually produce?**

Two different numbers appear on the same listing. The title, the bullets and the package list describe 2pcs of 195W N-type panels, which adds up to 390W; the spec sheet's Maximum Power field says 340 Watts. ECO-WORTHY does not explain the gap on the page.

**What charge controller comes with this ECO-WORTHY kit?**

A 30A solar charge controller with build-in short-circuit, open-circuit and over-load protection. The listing states it supports three battery types: lithium, lead acid and gel, and it carries 2 USB ports rated 5V 2A.

**Is the efficiency 25% or 23%?**

Both are printed on the listing. The bullet for the N-Type 18BB cells claims 25% conversion efficiency and 18 busbars; the Efficiency field in the spec sheet reads 23%.

**How much does the ECO-WORTHY 390W kit weigh?**

23.5 kg, as listed in the spec sheet. That covers the kit sent in two packages: the panels in one, the controller, cables and brackets in the other.

**How is the daily output described?**

The bullets say Generate 1.56kWh per day under 4 hours full sunlight, and the item highlight repeats 1.56kWh/Day for the 2x195W panels with the 30A PWM controller. That is an ECO-WORTHY estimate, not a measured figure.

**Can the ECO-WORTHY kit be mounted on a van roof without drilling?**

The listing says the panels have pre-drilled holes and Plug&Play cables on the back, and that the No-Drill solar corner bracket preserves the van roof's integrity. One buyer reports the brackets were not pre-drilled and no fixing screws were supplied.