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
- 13.37 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.
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#31 of 90 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.
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.
Sources & references · checked 2026-09-01
Strong evidence coverage
20 of 20 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. Whispr specifications V6.0 dated 2025-10-14, installation manual V1.1 dated 2025-09-08, and governing warranty V4.0 dated 2025-10-02. 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 ↗
- Round-trip efficiency (%)Manufacturer ↗
Product record history
9 changes to this record · 152 products changed in this update
DE Support Note
- Before
- Not previously recorded
- After
- No German PowerPlus catalogue names RX-7013Plus. Whispr remains an Australian product.
DE Evidence sources
- Before
- Not previously recorded
- After
- https://www.powerplus-energy.com.au/products/whispr/
US Evidence sources
- Before
- Not previously recorded
- After
- https://www.powerplus-energy.com.au/products/whispr/
Source revision
- Before
- Whispr specifications V6.0 dated 2025-10-14, installation manual V1.1 dated 2025-09-08, and governing warranty V4.0 dated 2025-10-02
- After
- Whispr specifications V6.0 dated 2025-10-14, installation manual V1.1 dated 2025-09-08, and governing warranty V4.0 dated 2025-10-02. 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
- PowerPlus Energy publishes Whispr / RX-7013Plus on Australian domains only. No United States catalogue names RX-7013Plus. RX-5013Plus is a different identity and is not transferred.
1 change to this record · 147 products changed in this update
2Ab59E0Fb030
- Current text
- accepted at: 2026-08-09; category: battery; certification model: RX-7013Plus (AS4777-2 2020); jurisdiction: au_cec; match method: exact_normalized_single_record; product slug: powerplus-energy-whispr-13-37kwh-au; source key: data/batteries/powerplus_whispr.json; source manufacturer name: Redx Technology Australia Pty Ltd; validation: approved at: 2025-02-03; candidate model: RX-7013Plus (AS4777-2 2020); 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://www.powerplus-energy.com.au/resources/whispr-series-installation-manual.pdf; https://www.powerplus-energy.com.au/resources/whispr-series-specifications.pdf
State
- Before
- Not previously recorded
- After
- reviewed_absence
Value
- Before
- Not previously recorded
- After
- The exact product publishes up to 99% battery-to-grid inverter efficiency, not a comparable battery or complete-system round-trip efficiency. RTE remains blank.
Value
- Before
- Not previously recorded
- After
- The exact specification and manual publish more than 5,000 cycles at 70% end of life. The conservative stored value is 5,000.
Evidence sources
- Before
- Not previously recorded
- After
- https://www.powerplus-energy.com.au/products/whispr/; https://www.powerplus-energy.com.au/resources/whispr-series-specifications.pdf
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
Whispr 13.37 scores 66, placing 25 of 74 in the Performance & Value class against a class average of 63.0. Its strongest scoring dimension is capacity & usability (85), above the class average of 83. Guarantee & Backbone scores 49, the lowest pillar for this product. The class average on guarantee & backbone is 54. Key specifications: LFP, 7.0 kW continuous output.