Photo from the manufacturer
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The Solarbank 4 Pro integrates the battery and a bidirectional inverter in a single body, and manages several panel strings independently: useful when the balcony or facade doesn't face the sun in just one direction. Besides the sun, it also charges from the grid.
It also has an output separate from the grid connection, designed to directly power appliances connected to it. It's also designed to grow: the same control unit accepts additional satellite batteries as energy needs increase, without needing to install a second one.
It suits anyone with panels facing in several directions on the same balcony, or who wants a system that can be expanded later. Anyone looking for just a simple first storage unit, with one panel and little else, will find more complexity here than they need.
midpoint of the estimated range — on nominal capacity
| Parameter | Value | Source |
|---|---|---|
| Dimensions | 46 × 35.5 × 30.5 cm (18.1 × 14.0 × 12.0 in) | manufacturer website |
| Weight | 50.0 kg (110.2 lb) | manufacturer website |
| Nominal capacity | 5.024 kWh | Declared by the brand |
| Cell chemistry | LFP (lithium iron phosphate) | Declared by the brand |
| Expandable | Yes | Declared by the brand |
| Battery voltage | 16 V | Declared by the brand |
| Feed-in limit | 800 VA | Declared by the brand |
| Inverter included | Yes | Declared by the brand |
| Maximum solar input | 5000 W | Declared by the brand |
| MPPT trackers | 4 | Declared by the brand |
| Grid charging | Yes | Declared by the brand |
| Maximum charge power | 2.5 kW | Declared by the brand |
| Backup power | EPS (brief interruption) | Declared by the brand |
| Backup output | 2500 W | Declared by the brand |
| Warranty | 10 anni | Declared by the brand |
| Ingress protection | IP66 | Declared by the brand |
| Minimum temperature | -20 °C | Declared by the brand |
| Maximum temperature | 55 °C | Declared by the brand |
| Usable capacity | — | Not declared |
| Depth of discharge | — | Not declared |
| Cell supplier | — | Not declared |
| Maximum expanded capacity | — | Not declared |
| Dynamic tariffs | — | Not declared |
| Switchover time | — | Not declared |
| Rated cycles | — | 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 |
| Noise level | — | Not declared |
| Works without internet | — | 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 |
| App required for setup | — | Not declared |
| Declared standards | — | Not declared |
| Official list price | — | Not declared |
The rest of the data comes from one page 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.
