The assessment
How it scores, by category
Market position
The data
DC-coupled battery
Stores DC energy and relies on system power electronics outside the battery product for household AC.
- Product role
- The published battery record covers the storage stack, controller and stated capacity range.
- Published range
- 4.992–29.952 kWh
- Phase
- Not recorded
- Backup boundary
- Installation-specific
What the documents establish
Published evidence, source-reviewed non-disclosure and unresolved questions remain separate from the product score.
Usable capacity
97.5% of this battery’s nominal capacity is usable, 4.992 kWh in the scored configuration.4.992 kWh usableScored configuration: BTS 5K. Published range 4.992–29.952 kWh.
The remaining 2.5% 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
47 / 100#66 of 78 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. The current datasheet range uses one to six 4.992 kWh usable modules. The score remains anchored to one module; the Australian warranty uses a lower 4.60 kWh contractual usable-energy baseline. Scored model: BTS 5K · checked 2026-07-27. Evidence.
Sources & references · checked 2026-08-06
Strong evidence coverage
29 of 29 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. BTS 5K datasheet V2.1 dated 2026-01-06, ESI 3-6K-S1 datasheet and Australian battery warranty Rev 1.1 re-audited 2026-08-06
- Sourced valuesData card →
- Warranty summary10-year product warranty →
Show 2 more
- Modularity & scalabilityManufacturer ↗
- Financial strength & warranty backingManufacturer ↗
Evidence timeline
Recorded verification events for this scorecard. These are evidence checks, not historical score snapshots. No change to this product record has been published since the change ledger opened on 2026-08-16.
- Core scorecard evidence checked
- AU market evidence checked
- Plain-language warranty summary checked
- Series benchmark evidence checked
Scored by Solar Analytica Research
Further reading from Findings
Stay across the benchmark.
New scorecards, score changes and market signals, published as they happen.
Our reading
PowerAll BTS 5K scores 62, placing 38 of 63 in the Performance & Value class against a class average of 63.4. Its strongest scoring dimension is capacity & usability (88), running 5.1 points above the class average on this dimension. Energy Ecosystem scores 38, the lowest pillar for this product. The class average on energy ecosystem is 48. Key specifications: LFP, 2.5 kW continuous output.