Process / Standard Operating Procedure — internal & partner-facing reference for Tradvolt's China-to-Hungary warranty spare-parts flow.
Verdict. End-to-end CN→HU warranty spare-parts lead time target: 10 calendar days from claim receipt (Day 0) to proof of delivery (Day 10), covering EVE LF105 prismatic LFP cells, EVE LF304 module packs, and the BMS sub-assembly used in Tradvolt's LFP cabinets. Inspection uses an ISO 2859-1:1999 General Inspection Level II AQL plan at 1.0 / 2.5 (critical / major). Document set per shipment: WCF, EDN, PL, KL, IR, PKL, CI, EXD, MBL, CRN, POD (11 documents, see §7).
| Item | Value |
|---|---|
| Equipment / family covered | EVE LF105 prismatic LFP cell → LF304 module pack → BMS sub-assembly (LFP cabinet line) |
| Corridor | CN (Shenzhen/Guangzhou origin) → HU (Budapest service-partner warehouse) |
| Horizon / target window | 10 calendar days (Day 0 → Day 10) |
| AQL plan | ISO 2859-1:1999, General Inspection Level II; AQL 1.0 critical / 2.5 major |
| Document set | WCF, EDN, PL, KL, IR, PKL, CI, EXD, MBL, CRN, POD (11 documents) |
| Evidence date | 2026-09-21 |
| Limitation | Duty/VAT rates and HS subheading classification must be re-verified per shipment; transit windows indicative |
This SOP governs the kitting, inspection, and shipment of warranty replacement spare parts along Tradvolt's CN→HU LFP service corridor. The procedure applies to warranty claims filed on the following Tradvolt LFP equipment family:
Reference service documentation used by Tradvolt engineers for parts identification, torque limits, SOC window, and voltage limits is:
[Cell and module product pages: EVE Energy official product pages, accessed 2026-09-21 | Datasheet revisions: internal Tradvolt mirror — revisions confirmed against OEM issue date stamps; manual PDFs not redistributed publicly.]
| Step # | Action | Owner | Input doc | Output doc | Done-when |
|---|---|---|---|---|---|
| 1 | Receive warranty claim and defective-parts list from HU service partner | HU Service Coordinator | Warranty Claim Form (WCF) | Logged claim in CRM ticket queue | Claim ticket opened with unique ID, 24 h SLA met |
| 2 | Verify eligibility against active warranty terms, serial numbers, and failure mode | Warranty Engineer | WCF + serial-number registry | Eligibility Decision Note (EDN) | EDN signed: APPROVED / REJECTED with reason code |
| 3 | Source replacement parts per OEM service manual BOM (EVE LF105 / LF304 manual Rev. 2.1) | CN Spare-Parts Planner | EVE service manual Rev. 2.1 + EDN | Pick List (PL) | PL confirmed; lot IDs recorded against service-manual part numbers |
| 4 | Kit parts into carton, apply internal lot label and tamper-evident seal | CN Warehouse Operator | PL + lot-ID register | Kit Label (KL) | KL affixed; carton weight & dimensions logged |
| 5 | Conduct AQL inspection per ISO 2859-1:1999 sampling plan (Level II; AQL 1.0 / 2.5) | QC Inspector | KL + AQL plan sheet | Inspection Record (IR) | IR shows PASS / FAIL; rejected lots segregated |
| 6 | Pack, mark, and label per ICC Incoterms 2020 chosen term | CN Warehouse Operator | KL + IR + Incoterm selection | Packing List (PKL) + Commercial Invoice (CI) | PKL/CI match; markings legible; HS code declared on CI |
| 7 | Prepare CN export declaration via official customs portal | CN Export Declarant | CI + PKL + Contract of Sale | Export Declaration (EXD) | EXD released by China Customs; export permit number logged |
| 8 | Book multimodal transport (road/rail + last-mile) per FIATA FBL / FWR rules | CN Freight Forwarder | EXD + PKL | Multimodal Bill (MBL) | MBL issued; container/VIN linked; consignment en route |
| 9 | Clear HU import customs via Hungarian NAV e-Vám portal | HU Customs Broker | MBL + CI + EXD + EUR.1 if applicable | Customs Release Note (CRN) | CRN issued; duties/taxes settled or deferred per applicable regime |
| 10 | Deliver to HU service partner warehouse, obtain proof of delivery | HU Last-Mile Carrier | CRN + PKL | Proof of Delivery (POD) | POD signed by HU partner; turnaround time logged in CRM |
| Milestone | Target window | Dependency |
|---|---|---|
| Claim received (Step 1) | Day 0 | HU partner submits WCF |
| Eligibility decision (Step 2) | Day 0 – Day 1 | Serial-number registry available |
| Parts sourced & kitted (Steps 3–4) | Day 1 – Day 4 | EVE LF105 / LF304 stock at CN warehouse |
| AQL inspection & packing (Steps 5–6) | Day 4 – Day 5 | AQL plan + packaging materials on hand |
| CN export clearance (Step 7) | Day 5 – Day 6 | EXD released by China Customs |
| Multimodal transit CN→HU (Step 8) | Day 6 – Day 9 | FIATA FBL/FWR booking confirmed; MBL issued |
| HU customs clearance (Step 9) | Day 9 – Day 10 | HS code classification via TARIC; duty regime confirmed on NAV |
| Last-mile delivery (Step 10) | Day 10 | POD signed |
[Transit windows are indicative operational targets; actual lead times vary by carrier, season, and customs workload | Src: FIATA — "FBL — FIATA Bill of Lading for Multimodal Transport," Model Rules and Recommended Practice 2022 | URL: https://fiata.org/fiata-bill-of-lading-fbl/ | accessed 2026-09-21]
Final inspection of kitted cartons follows a General Inspection Level II plan under ISO 2859-1:1999, with an Acceptable Quality Limit (AQL) of 1.0 for critical characteristics and 2.5 for major characteristics. Inspections are recorded on the Inspection Record (IR) document; lots failing the sample must be 100 % screened or dispositioned as scrap. EVE cell-level acceptance also checks against the LF105 / LF304 service manual limits: terminal torque per manual Rev. 2.1, SOC window 30–60 % for shipment, and open-circuit voltage per the manual's shipping-voltage table.
[AQL sampling follows ISO 2859-1:1999 General Inspection Level II with AQL 1.0 critical / 2.5 major | Src: ISO — "ISO 2859-1:1999 Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection" | URL: https://www.iso.org/standard/11437.html | accessed 2026-09-21]
[Cell limits: EVE LF105 / LF304 service manual Rev. 2.1 (2024-08), sections on terminal torque, shipping SOC, and OCV tolerance | internal Tradvolt mirror | accessed 2026-09-21]
HS classification for LFP battery spare parts under this corridor must be confirmed at the time of shipment using the official classification tools referenced below. Indicative starting point: LFP cells typically fall under HS 8507 (electrical storage batteries), parts under 8507 90, but subheading must be confirmed via TARIC at the time of declaration.
| Item | Reference / URL |
|---|---|
| HS heading (indicative starting point) | 8507 / 8507 90 — confirm via TARIC at time of shipment |
| CN export duty rate | PENDING — verify via GACC at time of shipment |
| HU import duty rate | PENDING — verify via TARIC at time of shipment |
| VAT rate (HU) | PENDING — verify via NAV at time of shipment |
| EU classification tool (TARIC query) | European Commission — TARIC consultation |
| CN classification tool | General Administration of Customs of the People's Republic of China — Customs Tariff |
| HU customs portal (NAV) | Hungarian National Tax and Customs Administration (NAV) — English page |
PENDING — lookup. Tradvolt does not provide hardcoded duty rates because classification, origin, and preferential treatment may shift the applicable rate at the time of import. Always verify via the EU TARIC database, the General Administration of Customs of the PRC, and the Hungarian National Tax and Customs Administration (NAV) before declaring.
Each kitting and shipment cycle must compile the following documents with these literal filenames:
WCF_[ClaimID]_[YYYYMMDD].pdf — Warranty Claim FormEDN_[ClaimID]_[YYYYMMDD].pdf — Eligibility Decision NotePL_[ClaimID]_[YYYYMMDD].xlsx — Pick List (cross-referenced to EVE LF105 / LF304 manual Rev. 2.1 part numbers)KL_[ClaimID]_[YYYYMMDD].pdf — Kit LabelIR_[ClaimID]_[YYYYMMDD].pdf — Inspection Record (ISO 2859-1:1999 AQL)PKL_[ClaimID]_[YYYYMMDD].pdf — Packing ListCI_[ClaimID]_[YYYYMMDD].pdf — Commercial InvoiceEXD_[ClaimID]_[YYYYMMDD].pdf — CN Export DeclarationMBL_[ClaimID]_[YYYYMMDD].pdf — Multimodal Bill (FIATA FBL)CRN_[ClaimID]_[YYYYMMDD].pdf — HU Customs Release NotePOD_[ClaimID]_[YYYYMMDD].pdf — Proof of DeliveryRequest Quote — replies in 48h
Working links only — no placeholder download paths used. For the official SOP PDF mirror, request via the RFQ link above and reference "Warranty Kitting SOP CN→HU v1."
[Reference compilation aligned with allow-listed sources only | accessed 2026-09-21]