13.37 kWh · LFP · All-in-one · Single-phase
The verdict. In our Performance & Value class, PowerPlus Energy Whispr 13.37 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.
Blackout protection
68 / 100#23 of 50 batteriesWhole-home, seamless (<20ms)
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.
Exact pairing not recorded
No exact manufacturer-named inverter, battery or integrated-system pairing is recorded for Australia. This is a documentation state, not a finding that the product cannot be used in a system.
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 Whispr 13.37 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. The capacity is the exact published cabinet rating; the score uses the 7 kW inverter variant as the named reference configuration. Scored model: RX-7013Plus with 13.37 kWh storage and 7 kW inverter · checked 2026-08-01. 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.
PowerPlus Energy Whispr 13.37 · Home battery
Australian evidence checked 2026-08-02.
Covered3 sources
Australian warranty scope: Australia and New Zealand; 10 years on-site product cover, 70% usable capacity and 2.8 MWh throughput per kWh usable, subject to registration, connectivity and operating conditions.
Structured claim terms: Recorded.
Sources & references · checked 2026-08-02
Strong evidence coverage
19 of 19 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
Whispr 13.37 scores 64, placing 22 of 41 in the Performance & Value class against a class average of 64.7. Its strongest scoring dimension is capacity & usability (85). Guarantee & Backbone scores 49, the lowest pillar for this product. The class average on guarantee & backbone is 58. Key specifications: LFP, 7.0 kW continuous output.