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
- 4.6–27.6 kWh
- Phase
- Three phase
- Backup boundary
- Installation-specific
What the documents establish
Published evidence, source-reviewed non-disclosure and unresolved questions remain separate from the product score.
Usable capacity
96% of this battery’s nominal capacity is usable, 9.2 kWh in the scored configuration.9.2 kWh usableScored configuration: BW-INV-TPH10K with two BW-BAT-4.8S modules. Published range 4.6–27.6 kWh.
The remaining 4% stays in the pack as reserve; the home never draws it.
Nominal capacity is not stated here. The usable kWh and the depth-of-discharge percentage are sourced separately, at times from different documents and different module counts, so dividing one by the other would produce a nominal figure no manufacturer published.
Usable capacity sourceDepth-of-discharge sourceCapacity 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
72 / 100#20 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 score uses a two-module 9.2 kWh usable reference configuration rather than rewarding the largest supported six-module stack. Scored model: BW-INV-TPH10K with two BW-BAT-4.8S modules · checked 2026-08-01. Evidence.
Sources & references · checked 2026-09-01
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. Bytewatt Australian BW-ESS 8-12 kW three-phase datasheet and AU/NZ warranty A7 reviewed 2026-08-01. 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 ↗
- Firmware & security disclosureManufacturer ↗
Product record history
9 changes to this record · 152 products changed in this update
DE Support Note
- Before
- Not previously recorded
- After
- neovoltess.com returns HTTP 403. No German catalogue naming BW-INV-TPH10K was retrieved. Held is not unavailable.
US Support Note
- Before
- Not previously recorded
- After
- neovoltess.com returns HTTP 403. No United States catalogue naming BW-INV-TPH10K was retrieved. Held is not unavailable. SPH5K is a different identity.
Source revision
- Before
- Bytewatt Australian BW-ESS 8-12 kW three-phase datasheet and AU/NZ warranty A7 reviewed 2026-08-01
- After
- Bytewatt Australian BW-ESS 8-12 kW three-phase datasheet and AU/NZ warranty A7 reviewed 2026-08-01. First-market US and DE overlay review 2026-09-01: official regional catalogues recorded; Australian overlays and scores unchanged.
1 change to this record · 147 products changed in this update
8E3883Da50B5
- Current text
- accepted at: 2026-08-09; category: battery; certification model: BW-BAT-4.8S; jurisdiction: au_cec; match method: exact_normalized_single_record; product slug: neovolt-three-phase-10-4-8s-au; source key: data/batteries/neovolt_tph10k_9_2_au.json; source manufacturer name: Bytewatt Technology Co.,Ltd.; validation: approved at: 2024-12-06; candidate model: BW-BAT-4.8S; data confidence: High; evidence url: https://cer.gov.au/document/cec-approved-solar-batteries-0; expires at: 2027-12-06; 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
23 changes to this record · 78 products changed in this update
Evidence sources
- Before
- Not previously recorded
- After
- https://www.neovoltess.com/upload/down/1738999446735211.pdf
State
- Before
- Not previously recorded
- After
- reviewed_absence
State
- Before
- Not previously recorded
- After
- reviewed_absence
Value
- Before
- Not previously recorded
- After
- The exact Australian integrated-system datasheet publishes 96% maximum round-trip efficiency.
Evidence sources
- Before
- Not previously recorded
- After
- https://www.neovoltess.com/upload/down/1738999446735211.pdf
Value
- Before
- Not previously recorded
- After
- Reviewed 2026-08-25: The exact Australian integrated-system datasheet publishes 96% maximum round-trip efficiency. No battery/DC round-trip value is substituted into the score.
Value
- Before
- Not previously recorded
- After
- The exact datasheet publishes an 8,000-cycle headline without a retained-capacity endpoint or complete test conditions.
Value
- Before
- Not previously recorded
- After
- Reviewed 2026-08-25: The exact datasheet publishes an 8,000-cycle headline without a retained-capacity endpoint or complete test conditions. No cycles-to-70% value is substituted into the score.
Evidence sources
- Before
- Not previously recorded
- After
- https://www.neovoltess.com/upload/down/1738999446735211.pdf
Round-trip efficiency (%): Evidence sources
- Before
- https://www.neovoltess.com/upload/down/1738999446735211.pdf
- After
- No longer recorded
Evidence sources
- Before
- Not previously recorded
- After
- https://www.neovoltess.com/upload/down/1738999446735211.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
Three Phase 10 scores 64, placing 32 of 76 in the Performance & Value class against a class average of 63.0. Its strongest scoring dimension is capacity & usability (84), above the class average of 84. Guarantee & Backbone scores 43, the lowest pillar for this product. The class average on guarantee & backbone is 55. Key specifications: LFP, 10.0 kW continuous output.
Dietreich Farquharson · review.solar