Photo from the manufacturer
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STREAM Pro packs battery and bidirectional inverter into a single tower, and it's the size a balcony starts with: panels come in through three separate inputs, extra energy goes to the grid within your country's limit and the rest powers whatever's connected. When the sun isn't enough it also tops up from the outlet. In most of Europe it plugs into a normal outlet; where regulation requires it, as in the United Kingdom, an electrician is needed.
If capacity isn't enough down the line, other units in the series pair up alongside it: stacked in pairs and held by the anti-tip bracket, or spread across different rooms and kept together by the home Wi-Fi. The app is for pairing them the first time; after that, turning on and checking the charge level are read over Bluetooth even without internet, while managing several units together really does need the connection. It has no fans, and talks directly to the main hourly energy price providers to shift charging and discharging to where energy costs less.
It's a good base for anyone starting with a few panels, maybe all on the same side of the building, who prefers a single unit to install instead of several strings to manage. If the grid is interrupted, the switch to the battery isn't instant: equipment that can't tolerate even a moment of darkness should be powered elsewhere.
official manufacturer list price — on nominal capacity
| Parameter | Value | Source |
|---|---|---|
| Weight | 22.8 kg (50.3 lb) | manufacturer website |
| Power supply | 230 V / 50 Hz | manufacturer website |
| Nominal capacity | 1.92 kWh | Declared by the brand |
| Cell chemistry | LFP (lithium iron phosphate) | Declared by the brand |
| Expandable | Yes | Declared by the brand |
| Battery voltage | 19.2 V | Declared by the brand |
| Feed-in limit | 800 VA | Declared by the brand |
| Inverter included | No | Declared by the brand |
| Maximum solar input | 1500 W | Declared by the brand |
| MPPT trackers | 3 | Declared by the brand |
| Grid charging | Yes | Declared by the brand |
| Dynamic tariffs | Built in | Declared by the brand |
| Backup power | EPS (brief interruption) | Declared by the brand |
| Backup output | 1200 W | Declared by the brand |
| Rated cycles | 6000 cicli | Declared by the brand |
| Warranty | 10 anni | Declared by the brand |
| Ingress protection | IP65 | Declared by the brand |
| Minimum temperature | -20 °C | Declared by the brand |
| Maximum temperature | 55 °C | Declared by the brand |
| Works without internet | With limitations | Declared by the brand |
| App required for setup | Yes | Declared by the brand |
| Declared standards | CE | Declared by the brand |
| Official list price | 1199 € | Declared by the brand |
| Usable capacity | — | Not declared |
| Depth of discharge | — | Not declared |
| Cell supplier | — | Not declared |
| Maximum expanded capacity | — | Not declared |
| Maximum charge power | — | Not declared |
| Switchover time | — | Not declared |
| Capacity at end of cycle life | — | Not declared |
| Guaranteed throughput | — | Not declared |
| Guaranteed remaining capacity | — | Not declared |
| Round-trip efficiency | — | Not declared |
| Standby consumption | — | Not declared |
| Mounting | — | Not declared |
| Cell heating | — | Not declared |
| Noise level | — | Not declared |
| Local control | — | Not declared |
| Open protocols | — | Not declared |
| Home Assistant integration | — | Not declared |
| Where the data is hosted | — | Not declared |
| Remote updates | — | Not declared |
| Battery passport | — | Not declared |
| Carbon footprint | — | Not declared |
| Recycled content | — | Not declared |
The rest of the data comes from 2 pages on the manufacturer's site, cited row by row in the table above.
A manual or a datasheet counts as a source even when the original file is hosted elsewhere: what matters is the document, not the server. Where that happens, it is stated above.
These numbers are calculated, not stated: they have no source to cite, they have a formula you can redo. The price used is the manufacturer's list price, which is stable and the same in every country — not a shop's price on the day.
Chosen by the declared use tier and footprint, not by price: we don't publish prices.
