The sonnenBatterie Evo is AC-coupled, so it works alongside the solar inverter you already have. In a blackout it backs up the home, and its Black Start function can wake an AC-coupled solar system while the grid is down.
Key facts
| Feature | Detail |
|---|---|
| Usable energy | 10 kWh (11 kWh nominal, at 90% depth of discharge) |
| Power | 5 kW continuous |
| Backup | 5 kW continuous; up to 7,050 VA for 60 seconds; Black Start for AC-coupled solar |
| Coupling | AC-coupled; works with solar inverters up to 6 kW |
| Phases | Single phase |
| Chemistry | Lithium iron phosphate (LFP) |
| Ingress rating | IP56, indoors or outdoors |
| Operating temperature | -5 °C to 45 °C |
| Made in | Germany |
| Warranty | 10 years or 10,000 cycles; at least 80% of nominal capacity |
Models
| Model | Capacity | Power | Notes |
|---|---|---|---|
| sonnenBatterie Evo | 10 kWh usable (2 × 5 kWh modules) | 5 kW | AC-coupled; 163.5 kg |
Warranty
sonnen Australia’s warranty runs for 10 years or 10,000 complete recharge cycles, whichever comes first, from the date on the commissioning report. It guarantees the battery won’t fall below 80% of the nominal capacity on its data sheet during that time. sonnen’s product page says the cover includes the inverter, power electronics, energy manager and battery modules.
Support in Australia
sonnen Australia is based in Elizabeth South, South Australia. Repairs and replacements are done by sonnen or its authorised partners.
Strengths
- Guarantees 80% of nominal capacity through the warranty
- Backup, with Black Start for AC-coupled solar
- Works with the solar inverter you already have
Watch for
- 5 kW continuous, single phase only
- Heavy, at 163.5 kg
- 90% of nominal capacity is usable
Our take
If you want a battery that holds its capacity and backs up the home on an existing solar system, the Evo’s warranty terms are clear and strong. Check that 5 kW covers what you run at once.
Before you buy
- For the federal battery discount, the exact model must be on the Clean Energy Council’s approved battery list. Ask your installer to confirm it.
- Work out the discount for your battery’s size with our battery rebate calculator.
- Compare quotes from accredited battery retailers near you, and check their accreditation.
Sources
- sonnen: sonnenBatterie Evo
- sonnen: sonnenBatterie Evo technical data (Australia, April 2025)
- sonnen Australia: manufacturer’s warranty, sonnenBatterie
Specifications and warranties change. We use the manufacturer’s own documents and say when one isn’t published; check the current version with your installer before you sign.