6.31–15.79 kWh · LFP · DC-coupled
The verdict. In our Performance & Value class, Fronius Reserva leads on capacity & usability. Home-battery reliability is rarely independently verified, so judge on chemistry, safety certification and the backing company.
The assessment
How it scores, by category
Market position
The data
Capacity 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#20 of 50 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.
System decision
Only exact, manufacturer-named Australian paths are shown. A shared brand, product family or output rating is not proof of compatibility.
Confirmed pairing
The exact named inverter pairing is recorded as confirmed for Australia.
Backup: Full Backup requires a Fronius grid-disconnection device in addition to the battery and inverter.
Required hardware: Fronius Backup Controller or other Fronius-approved grid-disconnection device for Full Backup.
Configuration boundary: Two to five Reserva modules per tower; final power and parallel limits are inverter-dependent.
Confirmed pairing
The exact named inverter pairing is recorded as confirmed for Australia.
Backup: Full Backup requires a Fronius grid-disconnection device in addition to the battery and inverter.
Required hardware: Fronius Backup Controller or other Fronius-approved grid-disconnection device for Full Backup.
Configuration boundary: Full Backup availability and output vary by exact Symo model; use the current Fronius battery overview and inverter manual.
A documented relation does not establish site sizing, network approval, protected-load design, firmware state or installer acceptance. When no exact relation is recorded, compatibility remains unestablished in this catalogue.
Ask the installer: What usable capacity, backup power and warranted operating conditions will the installed Reserva configuration deliver?
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. Capacity range describes supported configurations; the score remains anchored to the named reviewed reference configuration, not the largest stack. Scored model: Reserva 6.3 (6.31 kWh usable) · checked 2026-07-31. Evidence.
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.
Fronius Reserva 6.31 kWh · Home battery
Australian evidence checked 2026-08-02.
Covered3 sources
Australian warranty scope: Australia is Warranty Country Group 3; Fronius Warranty Plus provides a 10-year term, 70% retained capacity, labour for removal/replacement and normal national shipping.
Structured claim terms: Recorded.
Sources & references · checked 2026-08-02
Strong evidence coverage
14 of 14 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.
Evidence timeline
Recorded verification events for this scorecard. These are evidence checks, not historical score snapshots.
Scored by Solar Analytica Research
Further reading from Signals
New scorecards, score changes and market signals, published as they happen.
Our reading
Reserva scores 67, placing 15 of 41 in the Performance & Value class against a class average of 64.7. Its strongest scoring dimension is capacity & usability (91), running 5.5 points above the class average on this dimension. Energy Ecosystem scores 44, the lowest pillar for this product. The class average on energy ecosystem is 49. Key specifications: LFP, 95% round-trip efficiency, 6.55 kW continuous output.