The assessment
How it scores, by category
Market position
The data
AC-coupled battery
Includes battery-side power conversion and connects on the household AC side.
- Product role
- The battery product includes its own conversion stage, while site isolation and backup controls may remain separate.
- Published range
- 10 kWh
- Phase
- Single phase
- Backup boundary
- Installation-specific
Usable capacity
90.9% of this battery’s nominal capacity is usable, 10 kWh in the scored configuration.10 kWh usableScored configuration: sonnenBatterie 10 (10/11).
The remaining 9.1% stays in the pack as reserve; the home never draws it.
Nominal capacity is not stated here. The usable kWh and the depth-of-discharge percentage are sourced separately, at times from different documents and different module counts, so dividing one by the other would produce a nominal figure no manufacturer published.
Usable capacity sourceDepth-of-discharge sourceCapacity guarantee: minimum retained at year 10
No year-by-year capacity schedule is published for this product - the manufacturer guarantees only this end-of-term minimum, not a specific decline curve. Capacity figure based on the sourced usable capacity of the base configuration; modular systems scale with additional modules.
Blackout protection
44 / 100#66 of 73 batteriesPartial (essential loads)
The blackout score is a standalone benchmark of outage resilience only - it re-weights sourced specs already scored in this product’s pillars (backup tier, switchover, surge strength, backup power, off-grid recharge) and never affects the overall score. Dots show the full battery fleet; the marker is this product.
Verification & sources
Market context
Global evidencechange in the site menu
Global benchmark. This scorecard is benchmarked globally. A global score does not imply local availability, certification, warranty coverage, or installer compatibility.
Benchmark anchor. Scored model: sonnenBatterie 10 (10/11) · checked 2026-06-16. Evidence.
Sources & references · checked 2026-08-15
Strong evidence coverage
16 of 22 scored criteria link directly to a published source.
Values marked estimated, derived, or not found remain visible on the audit sheet and do not carry the same evidential weight as a linked source. Coverage measures direct links, not an independent guarantee that a claim is correct.
Record revision. sonnenBatterie 10/11 installed-base boundary and sonnenBatterie 12 publication gate re-audited 2026-08-07
- Sourced valuesData card →
- Warranty summary10-year product warranty →
Show 9 more
- Cell chemistryManufacturer ↗
- EV charging integrationManufacturer ↗
- End-of-warranty retained capacity (%)Warranty ↗
- End-of-warranty retained capacity (%)Manufacturer ↗
- Firmware & security disclosureManufacturer ↗
- Firmware & security disclosureManufacturer ↗
- Grid-forming & backup tierManufacturer ↗
- Warranty transferabilityManufacturer ↗
- Financial strength & warranty backingManufacturer ↗
Evidence timeline
Recorded verification events for this scorecard. These are evidence checks, not historical score snapshots.
- Core scorecard evidence checked
- DE market evidence checked
- AU market evidence checked
- Plain-language warranty summary checked
- US market evidence checked
- Series benchmark evidence checked
Scored by Solar Analytica Research
Further reading from Signals
Stay across the benchmark.
New scorecards, score changes and market signals, published as they happen.
Our reading
sonnenBatterie 10 scores 65, placing 7 of 11 in the Premium Integrated class against a class average of 67.2. Its strongest scoring dimension is longevity (verified) (81), running 14.1 points above the class average on this dimension. Energy Ecosystem scores 48, the lowest pillar for this product. The class average on energy ecosystem is 54. Key specifications: LFP, 4.61 kW continuous output.