| Published capacity range | 13.3–33.25 kWh |
| Scored configuration | 19.95 kWh |
| Cell chemistry | LFP (LiFePO4) |
| Usable capacity | 19.95 kWh |
| Usable energy / DoD | 95% DoD |
| Continuous power output | 9.99 kW |
| Warranty period | 10 yr |
| Safety certification | Basic cert |
| Reliability testing | Not third-party tested |
| Manufacturing track record | 10-15 years |
Some values are estimated where independent verification was not available: see the full scorecard and review.solar/terms.
Hybrid Battery Max BE21HV · every criterion scored by the live rubric (Solar Analytica battery rubric v2.13.0), 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 (%) | 95 | datasheet | Source |
| Modularity & scalability | Fully modular / stackable expandable | datasheet | Source |
| Energy density / footprint | Published, but not matched to a rubric band | held | Source |
| Battery generation compatibility | Same-generation expansion only: matching spec modules required; clean path but | datasheet | Source |
| Power & Efficiency | |||
| Round-trip efficiency (%) | Not published | reviewed absence | Source +1 |
| Continuous power output (kW) | 9.99 | datasheet | Source +1 |
| Backup switching speed | Not published | reviewed absence | Source |
| Operating temperature range | Standard | datasheet | Source |
| Backup surge / motor-start capability | Peak/surge rating published with duration | datasheet | Source +2 |
| Longevity (verified) | |||
| Cycle life (cycles to 70%) | Not published | reviewed absence | Source |
| Warranty throughput | 2.5-5 MWh warranted per kWh usable | datasheet | Source +1 |
| Warranty period (yrs) | 10 | datasheet | Source +1 |
| End-of-warranty retained capacity (%) | 70 | datasheet | Source +1 |
| Verified reliability | Not third-party 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 |
review.solar · audit sheet · Solar Analytica battery rubric v2.13.0 · https://review.solar/cards/redback-hybrid-battery-max-be21hv-au
Hybrid Battery Max BE21HV · continued from page 2 · Solar Analytica rubric Solar Analytica battery rubric v2.13.0.
| Safety & Chemistry | |||
| Cell chemistry | LFP (LiFePO4) | datasheet | Source +1 |
| Safety certification | Basic cert | datasheet | Source +1 |
| Thermal & fire mitigation | Passive thermal mgmt | datasheet | Source +1 |
| AC terminal & connection protection | Not specified | reviewed absence | Source |
| Ingress protection (outdoor) | IP54 / sheltered | datasheet | Source |
| Cell provenance & traceability | Undisclosed | reviewed absence | Source +1 |
| Guarantee & Backbone | |||
| Warranty assurance | Parts & labour | datasheet | Source |
| Financial strength & warranty backing | Stable / listed | datasheet | Source |
| Manufacturing track record | 10-15 years | datasheet | Source |
| Energy Ecosystem | |||
| Grid-forming & backup tier | Essential-loads / partial backup only | datasheet | Source |
| Open protocol & API maturity | Cloud API only | datasheet | Source +2 |
| VPP & grid services readiness | VPP-capable (protocol ready, no confirmed live program) | datasheet | Source |
| EV charging integration | No EV integration | reviewed absence | Source |
| Thermal load management | Smart relay switching (excess solar triggered) | datasheet | Source |
| Smart home & IoT depth | No local smart home integration | reviewed absence | Source |
| Firmware & security disclosure | Firmware updates referenced; no security documentation | datasheet | Source |
review.solar · audit sheet · Solar Analytica battery rubric v2.13.0 · https://review.solar/cards/redback-hybrid-battery-max-be21hv-au