| Published capacity range | 8.28–22.08 kWh |
| Scored configuration | 8.28 kWh |
| Cell chemistry | LFP (LiFePO4) |
| Usable capacity | 8.28 kWh |
| Usable energy / DoD | 100% DoD |
| Continuous power output | 7.65 kW |
| Round-trip efficiency | 96% |
| Warranty period | 10 yr |
| Safety certification | UL9540 / IEC62619 |
| Reliability testing | Not independently tested |
| Manufacturing track record | 15+ years, field-proven |
Some values are estimated where independent verification was not available: see the full scorecard and review.solar/terms.
Battery-Box Premium HVM · every criterion scored by the live rubric (Solar Analytica battery rubric v2.9.0), with its recorded value, evidence status, and any linked source. Page 1 carries the buying-decision summary; this and the next page are the full record for verification and right of reply.
| Capacity & Usability | |||
| Usable energy / DoD (%) | 100 | datasheet | Source +1 |
| Modularity & scalability | Fully modular, ≤5 kWh increments, expandable in field | datasheet | Source +1 |
| Energy density / footprint | Average | datasheet | Source +1 |
| Battery generation compatibility | Same-generation expansion only: matching spec modules required; clean path but | datasheet | Source +1 |
| Power & Efficiency | |||
| Round-trip efficiency (%) | 96 | datasheet | Source +1 |
| Continuous power output (kW) | 7.65 | datasheet | Source +1 |
| Operating temperature range | Standard | datasheet | Source +1 |
| Longevity (verified) | |||
| Warranty throughput | 2.5-5 MWh warranted per kWh usable | datasheet | Source |
| Warranty period (yrs) | 10 | datasheet | Source |
| End-of-warranty retained capacity (%) | 70 | datasheet | Source |
| Verified reliability | Not independently tested | reviewed absence | Source |
| Cell balancing architecture | Pack-level only / not disclosed | reviewed absence | Source |
| Warranty degradation guarantee | End-point only: minimum capacity at end of warranty term | datasheet | Source +1 |
| Safety & Chemistry | |||
| Cell chemistry | LFP (LiFePO4) | datasheet | Source +1 |
| Safety certification | UL9540 / IEC62619 | datasheet | Source +1 |
| Thermal & fire mitigation | Passive thermal mgmt | datasheet | Source +1 |
| AC terminal & connection protection | Not specified | datasheet | Source |
| Ingress protection (outdoor) | IP54 / sheltered | datasheet | Source +1 |
| Cell provenance & traceability | In-house | datasheet | Source |
review.solar · audit sheet · Solar Analytica battery rubric v2.9.0 · https://review.solar/cards/byd-battery-box-premium-hvm-au
Battery-Box Premium HVM · continued from page 2 · Solar Analytica rubric Solar Analytica battery rubric v2.9.0.
| Guarantee & Backbone | |||
| Warranty assurance | Parts only | datasheet | Source +1 |
| Financial strength & warranty backing | Financially strong (profitable / strong parent) | datasheet | Source +1 |
| Manufacturing track record | 15+ years, field-proven | datasheet | Source +1 |
| Energy Ecosystem | |||
| Grid-forming & backup tier | Whole-home backup via paired hybrid inverter (capability is inverter-dependent | datasheet | Source +1 |
| Open protocol & API maturity | Proprietary / no documented API | datasheet | Source +1 |
| VPP & grid services readiness | VPP-capable + live VPP program (named market) | datasheet | Source +1 |
| EV charging integration | No EV integration | reviewed absence | Source |
| Thermal load management | No thermal load integration | reviewed absence | Source |
| Smart home & IoT depth | Community integration (Home Assistant, no native support) | datasheet | Source +1 |
| Dual-port flexibility | Standard single-mode integration: grid-tied + backup via one path, no independ | datasheet | Source +1 |
| Firmware & security disclosure | Firmware updates referenced; no security documentation | reviewed absence | Source |
review.solar · audit sheet · Solar Analytica battery rubric v2.9.0 · https://review.solar/cards/byd-battery-box-premium-hvm-au