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
- 4–24 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
100% of this battery’s nominal capacity is usable, 12 kWh in the scored configuration.12 kWh usableScored configuration: Battery-Box Premium LVS 12.0. Published range 4–24 kWh.
No reserve is withheld at the stated depth of discharge.
At a sourced 100% depth of discharge the usable and nominal figures are the same number, so no separate nominal capacity is stated.
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
79 / 100#7 of 66 batteriesWhole-home (via hybrid inverter)
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 public range shows one-tower configurations. The score is anchored to LVS 12.0; the 256 kWh parallel maximum is supporting context, not the scored configuration. Scored model: Battery-Box Premium LVS 12.0 · checked 2026-08-05. Evidence.
Australian warranty decision
1 product record
Read the Australian warranty as a claim pathway: the headline term is separate from remedy, labour, freight, site work, transfer and registration conditions.
BYD Battery-Box Premium LVS 12 kWh · Home battery
Australian evidence checked 2026-08-06.
Covered4 sources
Australian warranty scope: Australia; Shenzhen BYD Electronic Co., Ltd provides ten-year product cover and 60% retained usable energy until 35.64 MWh for LVS 12.0, whichever comes first. Cover extends to a subsequent owner who provides proof of ownership.
Structured claim terms: Recorded.
- Term
- 10 yr productStated in the structured comparison
- Product remedy
- CoveredRepair, replacement or a partial refund at BYD's option.
- Labour
- Not coveredInstallation labour is not promised.
- Freight
- ConditionalOrdinary claim freight is not an unconditional entitlement.
- Removal and reinstallation
- Not coveredRemoval and reinstallation are not promised.
- Transferability
- CoveredTransfers to a subsequent owner who acquires the product for their own use and provides proof of ownership.
- Registration and conditions
- ConditionalInvoice and mandatory product, inverter and installation details are required; defects must be notified within 30 days of awareness.
Sources & references · checked 2026-08-06
Strong evidence coverage
31 of 31 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.
- Sourced valuesData card →
- Warranty summary10-year product warranty →
Show 2 more
- Cell provenance & traceabilityManufacturer ↗
- Usable capacity (kWh)Manufacturer ↗
Evidence timeline
Recorded verification events for this scorecard. These are evidence checks, not historical score snapshots.
- Australian certification source identity verified
- 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 Signals
Stay across the benchmark.
New scorecards, score changes and market signals, published as they happen.
Our reading
Battery-Box Premium LVS scores 70, placing 12 of 53 in the Performance & Value class against a class average of 64.4. Its strongest scoring dimension is capacity & usability (94), running 8.9 points above the class average on this dimension. Energy Ecosystem scores 42, the lowest pillar for this product. The class average on energy ecosystem is 50. Key specifications: LFP, 95% round-trip efficiency, 10.0 kW continuous output.