The assessment
How it scores, by category
Market position
The data
Hybrid inverter
Manages PV, battery DC and household AC through the inverter platform.
- Product role
- The battery remains a separate product even when it belongs to the same branded platform.
- Published range
- 4.999–9.999 kW
- Phase
- Single phase
- Backup boundary
- Whole-home capability recorded
Warranty coverage: 15-year term
Coverage includes
Parts only · term longer than 68 of 74 scored inverters
No inverter in the fleet publishes a year-by-year performance or output guarantee the way panels and batteries do - this shows the covered term against the market-typical term and where every scored inverter’s term lands (grey dots, sized by model count), plus what the warranty actually includes.
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 highest rated output is scored; battery-capacity suffixes do not alter the inverter benchmark. Scored model: EK90 HS5-10K-S4-X · checked 2026-08-26. Evidence.
Sources & references · checked 2026-08-26
Strong evidence coverage
21 of 21 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. SAJ EK90 HS5 Single-Phase S3 / S4 Australian datasheet, exact manual, EK90 HS5 Australian warranty and CER exports checked 2026-08-26
- Sourced valuesData card →
- Archived copy of the primary sourcePDF ↗
Show 3 more
- Monitoring & smart featuresManufacturer ↗
- Grid & safety certificationManufacturer ↗
- Manufacturing track recordManufacturer ↗
Product record history
Product record
kind: inverter; brand: SAJ; name: EK90 HS5 S3 / S4; model: EK90 HS5-5K-S3, EK90 HS5-8K-S3 and EK90 HS5-10K-S4, each with 14-54 kWh suffixes; scored model EK90 HS5-10K-S4-X; score: 75.4
Primary datasheet
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
- AU market evidence checked
- Series benchmark evidence checked
Scored by Solar Analytica Research
Stay across the benchmark.
New scorecards, score changes and market signals, published as they happen.
Our reading
EK90 HS5 S3 / S4 scores 75, placing 9 of 38 in the Inverter class against a class average of 71.0. Its strongest scoring dimension is design & flexibility (96), running 16.7 points above the class average on this dimension. Energy Ecosystem scores 45, the lowest pillar for this product. The class average on energy ecosystem is 49. Key specifications: 98.0% peak efficiency, 4 MPPT inputs, 15-year warranty.