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ECO-WORTHY 2 × 200 W flexible ETFE panels, 24 V, 18BB review

A pair of 200 W flexible ETFE panels with 18-busbar N-type cells and integrated bypass diodes, fitted with six stainless eyelets and six straps each.

The bottom line The flexible option in this family, with bypass diodes named and a generous mounting kit. It publishes no dimensions — on a panel whose entire reason for existing is fitting a shape a rigid module cannot.

A pair of flexible 200 W panels for surfaces a framed module will not meet.

Why flexible, and what it costs

No frame, no glass, ETFE laminate instead. That lets the panel follow a van roof or a cabin top, and it removes the possibility of tilting it. A flexible panel lies where the surface lies, which is usually flat — and flat panels collect dirt, hold water and run hotter than tilted ones.

The mounting kit

Six stainless eyelets pre-fitted and six straps per panel, with adhesive backing named as an alternative. That is a complete answer to installation, which flexible panels often leave open.

The diode argument

Bypass diodes named, with the failure they prevent described: reverse current at night or in low light, which discharges the battery and heats the module. Naming a component and the problem it solves is more useful than naming it alone.

The blanks

No module voltages — the 24 V in the title is the system it suits, not the voltage it produces. No dimensions, which on a panel sold to fit a curved surface is the specification that decides whether it fits at all. No warranty.

Availability

German, French, Italian and Spanish Amazon stores quoted 210 € to 250 € when this page was compiled.

British Amazon store carries it too, priced in its own currency, which the euro range above deliberately omits.

American Amazon catalogue carries an entry for it, with nobody selling.

These figures are what Keepa reported on the day this page was last updated. Availability and pricing move without notice.

Prices quoted in this text were read on 16 September 2026. The live price is at the top of the page.

What it gets right, and what it leaves out

Strengths

  • Bypass diodes are named explicitly, with the reverse-current problem they solve described
  • Six eyelets and six straps per panel are supplied, plus adhesive mounting as an alternative
  • The 18-busbar argument is made in terms of micro-crack risk rather than only output

Compromises

  • No voltages, on a set sold as 24 V, which is a system figure rather than a module one
  • No dimensions, on a flexible panel whose whole purpose is fitting a curved surface
  • No warranty terms at all

Specifications

Peak wattage2 × 200 W, from the title, described as a 400 W 24 V set
Cell technologyN-type cells with 18 busbars, first and second bullets, compared with 12-busbar modules for lower micro-crack risk
VoltagesAbsent as figures — 24 V appears in the title as a system voltage, not as a module voltage
Temperature coefficientNowhere in the listing
FrameNone — flexible construction with six pre-fitted stainless eyelets and six straps per panel, third bullet
GlassNone — ETFE with over 95 % light transmission, second bullet
DimensionsNowhere in the listing
Warranty termsNowhere in the listing; bypass diodes against reverse current are named in the fourth bullet
Amazon referenceB0GQZ8NGN2 (same reference on 6 Amazon marketplaces)
EAN0810198855241

Questions owners ask about this one

What do the bypass diodes do?

The fourth bullet describes them as preventing reverse current at night or in poor light, which would otherwise discharge the battery and heat the module. In daylight they also let current route around a shaded section rather than being throttled by it.

Does “24 V” tell me anything useful?

Only that the set is intended for a 24 V system. It is not the module’s open-circuit voltage, which is what a controller’s input window is checked against, and that figure is not published.