The assessment
How it scores, by category
Market position
The data
All-in-one energy system
Presents storage and power conversion as one integrated product or product platform.
- Product role
- Battery modules, inverter functions and controls are packaged as one purchasing architecture.
- Published range
- 12.4 kWh
- Phase
- Single phase
- 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
90% of this battery’s nominal capacity is usable, 12.4 kWh in the scored configuration.12.4 kWh usableScored configuration: vBox-14 with four vBox-3.5-M modules.
The remaining 10% 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
68 / 100#26 of 90 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 score is tied to the exact vBox-14 configuration. NeoVolt remains a separate candidate. Scored model: vBox-14 with four vBox-3.5-M modules · checked 2026-07-31. Evidence.
Sources & references · checked 2026-09-01
Strong evidence coverage
16 of 16 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. VoltX Commercial vBox Australian datasheet and StarCharge residential warranty reviewed 2026-07-31. First-market US and DE overlay review 2026-09-01: official regional catalogues recorded; Australian overlays and scores unchanged.
- Sourced valuesData card →
- Warranty summary10-year product warranty →
Show 2 more
- Archived copy of the primary sourcePDF ↗
- Warranty assuranceWarranty ↗
Product record history
9 changes to this record · 152 products changed in this update
DE Support Note
- Before
- Not previously recorded
- After
- No German VoltX catalogue names vBox-14. The product remains an Australian importer identity.
Source revision
- Before
- VoltX Commercial vBox Australian datasheet and StarCharge residential warranty reviewed 2026-07-31
- After
- VoltX Commercial vBox Australian datasheet and StarCharge residential warranty reviewed 2026-07-31. First-market US and DE overlay review 2026-09-01: official regional catalogues recorded; Australian overlays and scores unchanged.
US Support Note
- Before
- Not previously recorded
- After
- VoltX publishes vBox-14 on Australian domains only. voltx.com redirects to voltx.com.au. No United States catalogue names vBox-14 with four vBox-3.5-M modules.
1 change to this record · 147 products changed in this update
21A5B953C2D6
- Current text
- accepted at: 2026-08-09; category: battery; certification model: vBox-14; jurisdiction: au_cec; match method: exact_normalized_single_record; product slug: voltx-vbox-14-au; source key: data/batteries/voltx_vbox14.json; source manufacturer name: Wanbang Digital Energy Co Ltd; validation: approved at: 2025-05-30; candidate model: vBox-14; data confidence: High; evidence url: https://cer.gov.au/document/cec-approved-solar-batteries-0; expires at: 2027-12-31; list data version: au-cer-battery-2026-08-20-b3f077cbe945; list retrieved at: 2026-08-27T04:30:11Z; listing status at validation: listed
The previous text is not reproduced here: both versions run to a full research paragraph. Both are in the JSON record linked below.
Australian approved-product source identity
8 changes to this record · 78 products changed in this update
Evidence sources
- Before
- Not previously recorded
- After
- https://voltxcommercial.com.au/cdn/shop/files/Vbox_Data_Sheet_AU.pdf?v=13488308569890950533
Evidence sources
- Before
- Not previously recorded
- After
- https://voltxcommercial.com.au/cdn/shop/files/Vbox_Data_Sheet_AU.pdf?v=13488308569890950533
Value
- Before
- Not previously recorded
- After
- Reviewed 2026-08-25: no exact-product cycle-life result to exactly 70% retained capacity was established in the reviewed primary source set. Warranty limits and other or unstated endpoints are not converted. This is a scoped reviewed absence.
Value
- Before
- Not previously recorded
- After
- Reviewed 2026-08-25: no exact-product battery/DC round-trip efficiency with a complete measurement boundary was established in the reviewed primary source set. This is a scoped reviewed absence, not proof that the value has never been measured.
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
- US market evidence checked
- Australian certification source identity verified
- 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
vBox 14 scores 61, placing 47 of 74 in the Performance & Value class against a class average of 63.0. Its strongest scoring dimension is capacity & usability (79). Guarantee & Backbone scores 43, the lowest pillar for this product. The class average on guarantee & backbone is 54. Key specifications: LFP, 5.4 kW continuous output.