Stored kilowatt-hours only pay back if the house uses them at night · review
A 2.048 kWh balcony battery rated IP66 that stacks to four modules, carries WiFi and Bluetooth, and is sold as a companion to a Growatt balcony system.
The bottom line The best-sealed unit in this family and the least-documented battery inside it. Buying it means buying into one maker’s balcony system, which the listing is honest about — but no chemistry and no cycle count is a large blank on a product meant to last a decade.
A stackable 2 kWh balcony battery, sold explicitly as part of one maker’s system.
2.048 kWh, IP66, stacking to four modules, WiFi and Bluetooth. That is the whole of the technical content: five bullets, one of which is a German tax condition.
The chemistry. The cycle life. Any power rating. For a product whose value proposition is a decade of daily cycling, the absence of the first two is the thing to weigh.
Every bullet points at Growatt equipment. That is a legitimate way to sell a component, and it makes the boundary clear: this is an addition to a system rather than a general-purpose battery. What it will and will not work with outside that system is not stated.
Amazon records VALE — a seller of balcony solar kits elsewhere in this catalogue — as the brand; the title and first bullet describe a Growatt NOAH 2000. VALE, whose other listings here are balcony solar kits, is the seller. This page carries Growatt.
German Amazon store quoted about 388 € when this page was compiled.
American, British, French, Italian and Spanish Amazon catalogues carry 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.
| Usable capacity | Nowhere in the listing — 2.048 kWh is published as capacity with no usable figure |
|---|---|
| Charge and discharge power | Nowhere in the listing |
| Chemistry | Nowhere in the listing — no cell chemistry is named in any bullet |
| Cycle life | Nowhere in the listing |
| Inverter compatibility | Described as a companion to a Growatt balcony system, first bullet; no other inverter is named |
| Published metering | WiFi and Bluetooth are named, second bullet; no metering behaviour is described |
| Amazon reference | B0F9PWSNZ8 (same reference on 6 Amazon marketplaces) |
| EAN | 4262361725237 |
The second digit describes water: 5 is a jet, 6 is a powerful jet. Both are dust-tight. On a balcony the difference is marginal in practice, and both ratings assume the enclosure is closed and correctly fitted, which is the condition the rating was earned in.
The listing does not say. It names Growatt and nothing else, and this page does not infer compatibility that a maker has not published.
1600 Wh base, up to 8 kWh · 1600 W output · 3 MPPT, 2700 Wp solar · LiFePO4 · IP65 · AC-coupled · smart meter and tariff integration
An AC-coupled all-in-one balcony storage system with three MPPT trackers taking 2700 Wp, a 1600 W output, expansion to four packs, and integration with dynamic electricity pricing.
Best for: A household on a dynamic electricity tariff that already has roof PV and wants to stop exporting surplus.
≈ €448
1.92 kWh nominal · 2800 W solar across 4 MPPT · 1200–2300 W on two AC ports · LFP, 6000 cycles · IP65 · down to −20 °C · 26 cm wide
An AC-coupled 1.92 kWh LFP unit with four MPPT trackers taking 2800 W of solar, two mains ports rated 1200 to 2300 W, IP65 and stated operation to −20 °C.
Best for: A narrow indoor space beside an existing balcony installation, where four panel groups need managing separately.
≈ €549
1.92 kWh nominal, up to 11.52 kWh · AC-coupled · bidirectional DC/AC efficiency 96.5 % · AC round-trip efficiency 86 % · app control
An AC-coupled 1.92 kWh battery expandable to 11.52 kWh whose listing publishes both a conversion efficiency and a round-trip efficiency — the only one in this family that does.
Best for: Someone comparing storage on what a stored kilowatt-hour costs rather than on headline capacity.
≈ €545
