The assessment
How it scores, by category
Market position
The data
DC-coupled battery
Stores DC energy and relies on system power electronics outside the battery product for household AC.
- Product role
- The published battery record covers the storage stack, controller and stated capacity range.
- Published range
- 10.2–66.5 kWh
- Phase
- Not recorded
- 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
100% of this battery’s nominal capacity is usable, 10.2 kWh in the scored configuration.10.2 kWh usableScored configuration: T-HS10.2 (2 x TB-HS51 or TB-HS51O modules). Published range 10.2–66.5 kWh.
No reserve is withheld at the stated depth of discharge.
At a sourced 100% depth of discharge the usable and nominal figures are the same number, so no separate nominal capacity is stated.
Usable capacity sourceDepth-of-discharge source 1Depth-of-discharge source 2Capacity 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
71 / 100#22 of 90 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.
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 reviewed 10.2 kWh reference stack, not the 66.5 kWh maximum. Scored model: T-HS10.2 (2 x TB-HS51 or TB-HS51O modules) · checked 2026-07-26. Evidence.
Sources & references · checked 2026-08-31
Strong evidence coverage
31 of 31 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. SolaX Australia TSYS-HS51 V1.9 datasheet and Australian warranty V1.6 reviewed 2026-08-06. First-market DE overlay review 2026-08-31: official German catalogues recorded for the remaining 17 AU+US identities; Australian and United States overlays and scores unchanged.
- Sourced valuesData card →
- Warranty summary10-year product warranty →
Show 5 more
- Manufacturing track recordManufacturer ↗
- VPP & grid services readinessManufacturer ↗
- EV charging integrationManufacturer ↗
- Smart home & IoT depthManufacturer ↗
- Firmware & security disclosureManufacturer ↗
Product record history
8 changes to this record · 61 products changed in this update
DE Support Note
- Before
- Not previously recorded
- After
- de.solaxpower.com lists TSYS-HS51 including scored T-HS10.2. The warranty table uses T-BAT-SYS-HV-S51 / TB-HS51 for the same module family. T-BAT H 5.8 is not transferred. Manufacturer listing is established; distributor inventory is not inferred.
DE Evidence sources
- Before
- Not previously recorded
- After
- https://de.solaxpower.com/products/tsys-hs51.html; https://de.solaxpower.com/uploads/file/solax-eu-garantiebestimmungen-und-bedingungen-de.pdf; https://de.solaxpower.com/warranty.html; https://www.solaxpower.com/uploads/file/solax-tsys-hs51-datasheet-en.pdf
DE Certifications
- Before
- Not previously recorded
- After
- The SolaX Germany TSYS-HS51 product page names T-HS10.2 through T-HS66.5. The German warranty table names T-BAT-SYS-HV-S51 / TB-HS51. That naming difference is disclosed and is not treated as a second identity.
DE Grid and installation context
- Before
- Not previously recorded
- After
- High-voltage DC battery. German grid conformity belongs to the site inverter and installation. No cross-product suitability is inferred.
DE Status
- Before
- Not previously recorded
- After
- available
DE Warranty conditions
- Before
- Not previously recorded
- After
- labour: No unconditional full-term owner-selected labour entitlement was established.; registration: The German warranty table starts the T-BAT-SYS-HV-S51 / TB-HS51 ten-year term at the earlier of first installation or manufacture plus 9 months. Accessories and tool kits are excluded.; remedy: The applicable SolaX warranty instrument controls repair or replacement.; removal reinstallation: No unconditional removal and reinstallation entitlement was established.; transferability: The reviewed German warranty surface does not establish an unrestricted later-owner transfer right.; transport: No unconditional full-term freight entitlement was established.
Source revision
- Before
- SolaX Australia TSYS-HS51 V1.9 datasheet and Australian warranty V1.6 reviewed 2026-08-06
- After
- SolaX Australia TSYS-HS51 V1.9 datasheet and Australian warranty V1.6 reviewed 2026-08-06. First-market DE overlay review 2026-08-31: official German catalogues recorded for the remaining 17 AU+US identities; Australian and United States overlays and scores unchanged.
DE Warranty scope
- Before
- Not previously recorded
- After
- Germany; the German warranty table names T-BAT-SYS-HV-S51 / TB-HS51 with a ten-year standard term from the earlier of first installation or manufacture plus 9 months. Accessories and tool kits are excluded. The T-BAT H 5.8 and US T-BAT SYS HV 5.0 families are not transferred onto this TSYS-HS51 record.
2 changes to this record · 147 products changed in this update
B7Eb971099D5
- Current text
- accepted at: 2026-08-09; category: battery; certification model: T-HS66.5; jurisdiction: au_cec; match method: exact_normalized_single_record; product slug: solax-tsys-hs51; source key: data/batteries/solax_tsys_hs51.json; source manufacturer name: SolaX Power Network Technology (Zhejiang) Co Ltd; validation: approved at: 2025-08-26; candidate model: T-HS66.5; 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 identity3A1733187E96
- Current text
- accepted at: 2026-08-09; category: battery; certification model: T-HS10.2; jurisdiction: au_cec; match method: exact_normalized_single_record; product slug: solax-tsys-hs51; source key: data/batteries/solax_tsys_hs51.json; source manufacturer name: SolaX Power Network Technology (Zhejiang) Co Ltd; validation: approved at: 2025-08-26; candidate model: T-HS10.2; 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://au.solaxpower.com/uploads/file/solax-tsys-hs51-datasheet-en-au.pdf
Value
- Before
- Not previously recorded
- After
- The Australian datasheet states more than 6,000 cycles at 100% depth of discharge, 25C, 0.5C and 70% end of life.
State
- Before
- Not previously recorded
- After
- reviewed_absence
Value
- Before
- Not previously recorded
- After
- No battery-only round-trip efficiency is published in the reviewed Australian TSYS-HS51 datasheet.
Confidence
- Before
- Not previously recorded
- After
- high
Confidence
- Before
- Not previously recorded
- After
- high
State
- Before
- Not previously recorded
- After
- supported
Evidence sources
- Before
- Not previously recorded
- After
- https://au.solaxpower.com/products/tsys-hs51.html; https://au.solaxpower.com/uploads/file/solax-tsys-hs51-datasheet-en-au.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
- Australian certification source identity verified
- AU market evidence checked
- Plain-language warranty summary checked
- US market evidence 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
TSYS-HS51 scores 71, placing 7 of 74 in the Performance & Value class against a class average of 63.0. Its strongest scoring dimension is capacity & usability (93), running 9.5 points above the class average on this dimension. Guarantee & Backbone (56) is the dimension with the most room to move. Key specifications: LFP, 6.1 kW continuous output.