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sonnenBatterie 10 is a residential storage unit with battery and inverter in the same body, with lithium iron phosphate cells. It comes in three sizes, from 5.5 to 22 kWh nominal; several complete units can also be connected together for systems with bigger needs. The built-in inverter works on a single phase, built for homes with a single-phase connection.
It pairs with sonnen's dynamic tariff contract and charges on its own when electricity costs less, even with no solar system of its own. As standard it doesn't come with backup power: to keep something running during a blackout, a separate accessory is needed, an external single-phase box sold separately.
The optimal temperature range runs from 5 to 30 degrees, and outside that range a reduction in power is possible.
| Parameter | Value | Source |
|---|---|---|
| Dimensions | 69 × 27 × 172 cm (27.2 × 10.6 × 67.7 in) | manufacturer website |
| Weight | 98.0 kg (216.1 lb) | manufacturer website |
| Usable capacity | 5 kWh | Declared by the brand |
| Nominal capacity | 5.5 kWh | Declared by the brand |
| Cell chemistry | LFP (lithium iron phosphate) | Declared by the brand |
| Expandable | Yes | Declared by the brand |
| Maximum expanded capacity | 20 kWh | Declared by the brand |
| Continuous output | 3400 W | Declared by the brand |
| Phases | Single-phase | Declared by the brand |
| Maximum charge power | 3.4 kW | Declared by the brand |
| Backup power | None | Declared by the brand |
| Backup phases | None | Declared by the brand |
| Grid charging | Yes | Declared by the brand |
| Dynamic tariffs | Built in | Declared by the brand |
| EV charger integration | Yes | Declared by the brand |
| Rated cycles | 10000 cicli | Declared by the brand |
| Warranty | 10 anni | Declared by the brand |
| Ingress protection | IP30 | Declared by the brand |
| Minimum temperature | -5 °C | Declared by the brand |
| Maximum temperature | 45 °C | Declared by the brand |
| Declared standards | VDE-AR-N 4105, CEI 0-21, UN 38.3, IEC 62619, VDE 2510-50 | Declared by the brand |
| Depth of discharge | — | Not declared |
| Cell supplier | — | Not declared |
| Battery voltage | — | Not declared |
| Declared compatible inverters | — | Not applicable |
| Switchover time | — | Not applicable |
| Black start | — | Not applicable |
| Heat pump integration | — | Not declared |
| Virtual power plant | — | 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 |
| 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 |
| Battery passport | — | Not declared |
| Carbon footprint | — | Not declared |
| Recycled content | — | Not declared |
| Grid connection power | — | 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.
