The dual DC+AC solar input, the central selling point
The SolarFlow 2400 Pro combines two distinct solar inputs: up to 3000 W directly through its 4 built-in MPPT controllers, for panels wired directly to the unit, and up to 1800 W more via AC coupling from a solar setup already fitted with an inverter. In theory, the two modes add up to 4800 W of total solar input, a central selling point of the product and a rare configuration in this segment.
This full combination has not so far been confirmed at full power in real-world conditions: the combined charging ceiling actually reached came close to 2370 W in one given configuration, with automatic adjustment of the AC power to stay within that limit. Each input taken separately, however, does perform in line with the announced figures.
Round-trip efficiency, a strength that holds up well
The round-trip efficiency of the SolarFlow 2400 Pro consistently comes out at 87 to 90 % across several independent measurements carried out using different protocols, a result among the best observed on this type of product. This is a point on which the unit delivers particularly well on its promises.
The ZenKI assistant and tariff optimization, effective but cloud-dependent
The ZenKI assistant, compatible with more than 840 European energy providers, makes consistent charge and discharge decisions over several days in a row once configured, a real asset for anyone on a variable-rate contract. This optimization, however, remains dependent on an active internet connection: a dropout deprives the unit of its finest-grained optimization, which relies on the manufacturer's cloud rather than on a local calculation.
Documented firmware bugs
Several firmware anomalies, distinct from the ZenKI decision engine itself, come up on the manufacturer's online support channels: a discharge lockup at 0 W after a full charge to 100 %, requiring a restart to resume, as well as a device-not-recognized error in home automation integration. A firmware update released between April and July 2026 also introduced a standby lockup for several users.
Wi-Fi, a recurring friction point
An unwanted standby mode after a Wi-Fi connection loss comes up in several independent customer reviews, resolved by reconnecting the unit to the router. Wi-Fi is also limited to the 2.4 GHz band, with no 5 GHz compatibility, a limitation that also comes up in the feedback reviewed.
Installation and compliance
In the default standard mode, output power stays capped at 800 W, within the format of plug-and-play kits with a simple Enedis declaration. Beyond that, a “Premium” mode that can be enabled in the app unlocks full power, but requires a professional installation and a Consuel certificate.
One point deserves attention for anyone planning to use the AC input on a solar setup that has already been regularized: adding a storage battery to an existing setup generally shifts the regulatory file from generation-only to generation-and-storage, which calls for a new Consuel certificate rather than remaining covered by the initial regularization.
Safety and build quality
No recall or BMS failure has been recorded to date on this model. The dual battery management system is paired with aerosol fire suppression, and surface temperature stayed even, with no hot spot, during an independent check, fairly reassuring on this front.
Against its direct competitors
Against the Anker Solix Solarbank 3 E2700 Pro and the EcoFlow Stream Ultra, already featured in our comparison, the SolarFlow 2400 Pro stands out for its dual DC and AC solar input, combinable in theory up to 4800 W, against 1200 W for the Solarbank 3 Pro and 2000 W for the Stream Ultra. Its 2400 W bidirectional output also clearly exceeds the 800 W and 1200 W of its two competitors.
The actual price recorded
The listed price varies by configuration: 1319 € for the unit alone, or 1439 € for a bundle including four bifacial solar panels included as part of an ongoing promotion. The struck-through price also changes regularly with the manufacturer's campaigns, worth checking at the time of purchase rather than taken for granted.
