Actual output, matching what EcoFlow itself states
EcoFlow's official documentation states that, for a clear day with the panel angled at 90° to the sun (800 to 900 W/m², panel at 50 °C), output typically falls between 70 and 80W out of the 100W nominal rating. The user manual and the manufacturer's own blog explain this directly: heat (a 10 to 15% loss above 25 °C) and a non-optimal installation angle (a further 5 to 10%) account for most of this gap.
Real-world output falls, in most of the cases found, within this range or above it: between 75 and 110W in full sun depending on orientation, up to 85W in June at an optimal angle. The low readings reported (20 to 60W) consistently correspond to overcast skies or a non-optimal angle, two factors the manufacturer already anticipates, not a fault with the panel.
The 258° curve, a claim to qualify
EcoFlow highlights a possible curve of up to 258°, the most visible argument on the product page. The minimum bend radius stated in the technical documentation is 200mm, a real limit worth knowing before considering a very tightly curved surface. In use, the actual flexibility allows the panel to follow a moderate curve, without appearing to reach the extreme of this advertised figure: the marketing argument looks slightly overstated.
Installation itself remains a genuine strength, quick (around ten minutes, mentioned repeatedly) thanks to the panel's light weight (2.3kg), which lets it go on structures that would not support a rigid framed panel.
Mounting it flat without overheating: a caveat missing from the product page
An important point, absent from the product page but clearly present in the technical documentation: mounting the panel flat, with no air gap underneath, encourages a heat buildup that reduces output and, over time, service life. The user manual is explicit on this point and recommends leaving a gap between the panel and the mounting surface, whichever fixing method is chosen (adhesive or drilled).
The built-in bypass diode protects against hot spots caused by partial shading of a section of the panel, a mechanism distinct from overall heat buildup due to poor ventilation: the two should not be confused, contrary to what some product descriptions might suggest.
The IP68 certification protects effectively against water and dust, with no contrary incident reported on this specific point.
MC4 connector and compatibility
The MC4 connector, a solar industry standard, ensures broad compatibility well beyond the EcoFlow ecosystem alone. Stable operation with a Victron SmartSolar MPPT controller is confirmed on two separate occasions, with consistent charging voltages backing it up. No equivalent confirmation has been found with other controller brands such as Renogy or Redarc, which does not signal incompatibility, simply an absence of available feedback.
One point deserves clarification before buying: the presence of an MC4-to-XT60 adapter cable in the box is not consistently confirmed. It is worth checking this detail directly before ordering if this compatibility is needed for the planned installation.
Build quality, lifespan and after-sales support
Perceived build quality is generally good, with a preference expressed repeatedly over cheaper generic flexible panels, notably regarding the quality of the quick-release MC4 connectors. The manufacturer itself acknowledges, in its documentation for the Japanese market, that a flexible panel degrades more easily and has a shorter useful lifespan than an equivalent rigid panel, with limited hindsight so far on this technology's long-term durability.
A gradual power decline appears on this specific unit, tracked precisely over time: 100W at the start, 90W at 6 months, 80W at 1 year, 70W at 2 years, 60W at two and a half years, with after-sales support reportedly refusing coverage beyond 2 years. This case remains isolated and does not support a general degradation rate, but the precision of the tracking gives it real weight. A complete failure after one month of occasional use makes up a second, separate case, handled quickly by after-sales support this time. The advertised warranty period itself ranges between 24 and 36 months: worth checking directly before buying.
Price and availability
The price in the UK is £109, against a catalogue price of £139 outside promotions. EcoFlow's official UK site occasionally shows this model as out of stock while the Amazon store run by the same company lists it in stock at the same price, a gap worth checking at the time of purchase rather than a general unavailability. No product recall was found for this panel in the US safety databases consulted.
