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
- 8.28–22.08 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, 8.28 kWh in the scored configuration.8.28 kWh usableScored configuration: Battery-Box Premium HVM 8.3. Published range 8.28–22.08 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 source 1Depth-of-discharge source 2Capacity 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
72 / 100#17 of 78 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 range is per tower. The score uses the 8.28 kWh HVM 8.3 reference configuration; up to three towers can be connected in parallel for 66.24 kWh. Scored model: Battery-Box Premium HVM 8.3 · checked 2026-07-27. Evidence.
Sources & references · checked 2026-08-16
Strong evidence coverage
30 of 30 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. BYD Battery-Box Premium HVM BCU V2.0 datasheet dated 2025-03-28, operating manual V1.0 and Australian warranty V1.0 reviewed 2026-08-07
- Sourced valuesData card →
- Warranty summary10-year product warranty →
Show 7 more
- Archived copy of the primary sourcePDF ↗
- Verified reliabilityManufacturer ↗
- Warranty assuranceManufacturer ↗
- Financial strength & warranty backingManufacturer ↗
- Manufacturing track recordManufacturer ↗
- VPP & grid services readinessManufacturer ↗
- Smart home & IoT depthManufacturer ↗
Product record history
7 changes to this record · 13 products changed in this update
DE Certifications
- Before
- Not previously recorded
- After
- Current BCU-V2.0 HVM evidence lists IEC 62619, IEC 62040, VDE 2510-50, CE and UN 38.3.
DE Evidence sources
- Before
- Not previously recorded
- After
- https://site.bydbatterybox.com/downloads; https://site.bydbatterybox.com/uploads/downloads/BCU2.0_BBOX_HVM_Datasheet_DE_V1.0_250328-67ee39b46aeef.pdf; https://site.bydbatterybox.com/uploads/downloads/BCU2.0_HVM%20-%20VDE2510-50-67eb5f4c582d8.pdf
DE Warranty scope
- Before
- Not previously recorded
- After
- Germany; ten years, 80% retained usable energy or the model-specific throughput ceiling, whichever occurs first.
DE Warranty conditions
- Before
- Not previously recorded
- After
- labour: Ordinary onsite labour is not expressly promised.; registration: Installation within one month of invoice, approved operation, timely notice, invoice/serial evidence and requested performance-data access apply.; remedy: BYD chooses free repair, replacement or a calculated partial refund.; removal reinstallation: Removal and reinstallation are not expressly promised.; transferability: The German terms define the beneficiary as the first purchaser and do not establish transfer.; transport: Ordinary freight is not expressly promised.
Ranges
- Current text
- checked: 2026-07-27; market: AU; max: 22.08; min: 8.28; range label: 8.28–22.08 kWh; source revision: BYD Battery-Box Premium HVS/HVM datasheet V1.2 AU; source url: https://bydbatterybox.com/uploads/downloads/BYD%20Battery-Box%20Premium_Datasheet_HV-AU%20V1.2%20EN-5eec6422498ad.pdf; unit: kWh; checked: 2026-08-16; market: DE; max: 22.08; min: 8.28; range label: 8.28–22.08 kWh; source revision: German HVM BCU-V2.0 datasheet; source url: https://site.bydbatterybox.com/uploads/downloads/BCU2.0_BBOX_HVM_Datasheet_DE_V1.0_250328-67ee39b46aeef.pdf; unit: kWh
The previous text is not reproduced here: both versions run to a full research paragraph. Both are in the JSON record linked below.
Range sourceCell balancing architectureDE Support Note
- Before
- Not previously recorded
- After
- Current German evidence uses controller generation BCU-V2.0. The capacity names remain HVM 8.3 through 22.1; the controller generation is preserved as a configuration fact.
This is review.solar's publication history. It does not claim the product changed on the recorded date, and it excludes compatibility, system pairing, installation suitability and relative leaderboard prose. Open the complete JSON record.
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
- 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
Battery-Box Premium HVM scores 72, placing 6 of 63 in the Performance & Value class against a class average of 63.4. Its strongest scoring dimension is capacity & usability (94), running 10.5 points above the class average on this dimension. Energy Ecosystem (51) is the dimension with the most room to move. Key specifications: LFP, 96% round-trip efficiency, 7.65 kW continuous output.