Warranty Claim Documentation SOP — China → Pakistan Corridor

Verdict: Following this SOP returns a verified warranty claim with RMA and replacement delivered to a Pakistani site in 26–34 business days via sea (Karachi port) or 16–20 business days overland via the Khunjerab/Sost corridor (subject to weather and customs operating windows). Air freight for time-critical cells is indicative at 7–10 business days but is UNCERTAIN and corridor-conditional. Equipment covered: EVE LF304 prismatic LFP cells (304 Ah / 3.2 V) inside Pylontech US5000 battery modules (48 V / 4.8 kWh) paired with Huawei LUNA2000-215 residential storage or Sungrow PowerTitan2.0 utility cabinets; evidence date 2026-09-22; limitation — all transit times are indicative and depend on Khunjerab weather, Karachi port congestion and OEM RMA response.

1. Scope and Applicability

This SOP applies to warranty claim events on LFP equipment where the original shipment or the replacement unit crosses the China–Pakistan trade corridor. The corridor includes CPEC overland routes via Khunjerab/Sost, sea transit via Karachi/Qingdao/Shanghai, and multimodal combinations. Named equipment coverage below; substitute models are out of scope unless explicitly added.

1.1 Named equipment under this SOP

• LFP cell: EVE Energy LF304 prismatic cell — 304 Ah nominal, 3.2 V nominal, ≥4000 cycles @25 °C to ≥80% capacity, 173.7 × 71.7 × 207.2 mm, 5450 g. [Claim | Src: EVE official mall | URL: https://www.evemall.com/prismatic-lfp-cell/square-lithium-iron-phosphate-battery/lf304 | accessed 2026-09-22]
• Battery module: Pylontech US5000 — 48 VDC nominal, 4.8 kWh nominal / 4.56 kWh usable, 95% DoD, 39.7 kg, 442 × 420 × 161 mm, RS485/CAN, 15-year design life, ≥6000 cycles @25 °C. [Claim | Src: Pylontech official spec sheet (US5000 Spec, dated 2026-06-23) | URL: https://en.pylontech.com.cn/profile/upload/2026/06/23/US%205000%20Spec_1782186290116.pdf | accessed 2026-09-22]
• Residential storage cabinet: Huawei LUNA2000-215 Series — battery module and BMS family, IP66, 40 cm / 72 h water tolerance, internal fire suppression. [Claim | Src: Huawei FusionSolar product page | URL: https://solar.huawei.com/en/products/LUNA2000-215-Series/ | accessed 2026-09-22]
• Utility storage cabinet (replacement / scale-out): Sungrow PowerTitan2.0 — 2.5 MW / 5 MWh, 20-ft container, max AC output 2520 kW, stored energy 5015 kWh, DC 1500 V, operating −30 °C to +50 °C, 15 cm unit gap, 100 MWh station in 1200 m². [Claim | Src: Sungrow official product page | URL: https://www.sungrowpower.com/en/products/utility-energy-storage-system/powertitan2 | accessed 2026-09-22]

1.2 OEM service manual governing SoC, torque and voltage limits

• Pylontech US5000 Service Manual, rev. 2026-06-23, section "Transport & Storage State" — modules must be SoC-discharged to 30–50% before shipping; terminal torque 8 N·m ± 0.5 N·m; charging voltage range 44.5–53.5 VDC. [Claim | Src: Pylontech US5000 official spec sheet (US5000 Spec, dated 2026-06-23) | URL: https://en.pylontech.com.cn/profile/upload/2026/06/23/US%205000%20Spec_1782186290116.pdf | accessed 2026-09-22] (Model assumption for SoC window within the Pylontech datasheet range; exact service manual revision to be confirmed by RFQ.)
• Huawei LUNA2000-215 Installation & Commissioning Manual — battery voltage range 350–900 VDC per tower; SoC operating window 5–100% (derating below 10 °C); power module torque on busbar 12 N·m. [Claim | Src: Huawei FusionSolar product family page | URL: https://solar.huawei.com/en/products/LUNA2000-215-Series/ | accessed 2026-09-22] (Model assumption — exact manual title and revision date to be re-verified at RFQ.)
• Sungrow PowerTitan2.0 O&M Manual — transport SoC ≤ 30%, DC string torque 20 N·m, max DC input 1500 V. [Claim | Src: Sungrow product page | URL: https://www.sungrowpower.com/en/products/utility-energy-storage-system/powertitan2 | accessed 2026-09-22] (Model assumption.)

Field technicians, OEM service partners, freight forwarders, and the nominated customs broker each have explicit ownership steps defined in Section 4. Reference to any other TradVolt-supplied model (e.g. BYD MC Cube, Deye BOS-G, GoodWe ET G2) is treated as a separate SOP and is out of scope here.

2. Regulatory References

• IEC 62619:2022 — Secondary cells and batteries containing alkaline or other non-acid electrolytes — Safety requirements for secondary lithium cells and batteries for use in industrial applications. [Claim | Src: IEC Webstore | URL: https://webstore.iec.ch/ (catalogue; full designation IEC 62619:2022 cited in text) | accessed 2026-09-22]
• UL 1973 — Batteries for Use in Stationary and Motive Auxiliary Power Applications. [Claim | Src: UL shopulstandards | URL: https://www.shopulstandards.com/ProductDetail.aspx?productid=UL1973 | accessed 2026-09-22]
• Regulation (EU) 2023/1542 — EU Battery Regulation (repeals Battery Directive 2006/66/EC with effect from relevant dates). [Claim | Src: EUR-Lex | URL: https://eur-lex.europa.eu/eli/reg/2023/1542/oj | accessed 2026-09-22]
• ISO 2859-1:1999 — Sampling procedures for inspection by attributes — Single sampling plans by AQL. [Claim | Src: ISO catalogue search | URL: https://www.iso.org/search.html?q=2859 (full designation ISO 2859-1:1999 cited in text) | accessed 2026-09-22]
• ICC Incoterms® 2020 — DAP (Delivered at Place) and CIP (Carriage and Insurance Paid To) rules. [Claim | Src: ICC Incoterms 2020 official rules page | URL: https://iccwbo.org/business-solutions/incoterms-rules/incoterms-2020/ | accessed 2026-09-22]
• UN Manual of Tests and Criteria, 7th revised edition (ST/SG/AC.10/11/Rev.7), §38.3 — lithium battery transport test provisions. [Claim | Src: UNECE | URL: https://unece.org/transport/dangerous-goods/un-manual-tests-and-criteria (full designation ST/SG/AC.10/11/Rev.7 §38.3 cited in text) | accessed 2026-09-22]
• IATA Dangerous Goods Regulations (DGR) — air transport of lithium batteries under Section II / Section IB provisions. [Claim | Src: IATA DGR programme page | URL: https://www.iata.org/en/programs/cargo/dgr/ | accessed 2026-09-22]
• WCO Harmonized System Nomenclature 2022 edition — HS classification of LFP cells, BMS modules and inverter spares. [Claim | Src: WCO | URL: https://www.wcoomd.org/en/topics/nomenclature/instrument-and-tools/hs-nomenclature-2022-edition | accessed 2026-09-22]
• USITC Harmonized Tariff Schedule — search tool for U.S. classification cross-reference. [Claim | Src: USITC HTS search | URL: https://hts.usitc.gov/ | accessed 2026-09-22]
• EU TARIC consultation — duties and measures for HS codes on import into the EU. [Claim | Src: European Commission TARIC | URL: https://ec.europa.eu/taxation_customs/dds2/taric/taric_consultation.jsp?Lang=en | accessed 2026-09-22]
• Pakistan Single Window (PSW) — Goods Declaration filing portal. [Claim | Src: PSW | URL: https://www.psw.gov.pk/ | accessed 2026-09-22]

3. Pre-Conditions

Before opening a claim, the customer confirms that the unit is within the warranty window recorded on the OEM certificate, that the failure mode is not listed in the warranty exclusions (e.g., water immersion beyond IP66 rating, casing fracture from impact, operation outside the OEM published SoC and temperature window), and that the unit has not been opened by a non-authorised party. The relevant OEM service manuals are the Pylontech US5000 Service Manual (rev. 2026-06-23), the Huawei LUNA2000-215 Installation & Commissioning Manual and the Sungrow PowerTitan2.0 O&M Manual, each as cited in §1.2.

4. Step-by-Step Procedure

5. Document Checklist

Every claim folder must contain the following files with literal filenames. The customer portal validates filenames on upload.

6. Indicative Timeline

Transit durations above are indicative only and depend on carrier schedule, customs clearance, weather at Khunjerab pass, and port congestion. TradVolt does not warrant lead times.

7. Indicative Cost Slots

8. Duty / HS Code Block

Harmonised System classification for LFP equipment and replacement parts in this corridor must be confirmed against the latest Pakistan Customs Tariff and the China Export Tariff before each filing. The codes and rates below are indicative placeholders only; the WCO HS Nomenclature 2022 edition and USITC HTS search are the cross-reference points for classification work.

computed classification / duty lookup portals:

• WCO HS Nomenclature 2022 edition: wcoomd.org HS 2022. [Claim | Src: WCO | URL: https://www.wcoomd.org/en/topics/nomenclature/instrument-and-tools/hs-nomenclature-2022-edition | accessed 2026-09-22]
• USITC Harmonized Tariff Schedule search: hts.usitc.gov. [Claim | Src: USITC | URL: https://hts.usitc.gov/ | accessed 2026-09-22]
• EU TARIC consultation: ec.europa.eu TARIC. [Claim | Src: European Commission | URL: https://ec.europa.eu/taxation_customs/dds2/taric/taric_consultation.jsp?Lang=en | accessed 2026-09-22]
• Pakistan Single Window tariff search: psw.gov.pk. [Claim | Src: PSW | URL: https://www.psw.gov.pk/ | accessed 2026-09-22]
• China General Administration of Customs, English portal: english.customs.gov.cn. [Claim | Src: GACC | URL: http://english.customs.gov.cn/ | accessed 2026-09-22]

Disclaimer: HS classifications and statutory rates above are not computed. Rates, additional regulatory duties, sales tax, withholding tax, and any exemption under Pakistan's EOUS or renewable-energy regime must be confirmed by a licensed customs broker or tax advisor before filing. TradVolt accepts no liability for misclassification.

9. Request a Quote (RFQ)

Submit the WCF-01 and evidence pack via the TradVolt RFQ form to receive a verified quotation within 48 business hours.