Twelve-step SOP for finished LFP battery packs moving by sea from Shenzhen (CN) to Lagos (NG), built around the EVE LF304 280 Ah prismatic cell assembled into a 16S1P rack-format pack (51.2 V nominal, 14.3 kWh). Covers UN38.3 §T6 drop testing, AQL 2.5 visual sampling, UN3480 sea freight, SONCAP import gate, and receipt QC at the Lagos DC.
Verdict. Apply this 12-step SOP for finished LFP racks built on EVE LF304 16S1P cells shipped Shenzhen → Lagos: end-to-end horizon is 42–49 working days OEM sign-off to Lagos DC rack-in, with critical controls at Step 2 (UN38.3 §T6 1.0 m drop test, 6 faces, no voltage delta > 0.5 V on the 51.2 V pack string), Step 3 (EPE cushion ≥ 22 kg/m³, ≥ 2 cm, 6-side coverage), and Step 10 (AQL 2.5 receipt visual + OCV 51.2–57.6 V + IR ≤ 50 mΩ per cell). UN3480 Class 9 sea freight on FIATA FWB terms, CIP Lagos, SONCAP SC required pre-shipment.
| Item | Value |
|---|---|
| Equipment model / family | EVE LF304 (3.2 V / 280 Ah prismatic LFP) × 16S1P rack pack, 51.2 V nominal / 14.3 kWh (EVE Energy Co., Ltd.) |
| OEM manual + revision | EVE LF304 Product Datasheet, Rev. 2024-09 (EVE Energy) |
| Location / route | Shenzhen (CN) → Lagos, Apapa / Tin Can Island (NG), FCL sea |
| Horizon (working days) | 42–49 (OEM sign-off → Lagos DC rack-in) |
| Critical controls | Step 2 UN38.3 §T6 drop, Step 3 cushion density, Step 10 AQL 2.5 + OCV + IR |
| Limitation | Duty / VAT / SONCAP fee figures are per-shipment lookups, not hardcoded; cushion density is an EPE material spec assumed for 280 Ah cells — confirm against the actual pack-assembly OEM's drawing |
| Evidence date | 2026-09-21 |
This procedure applies to finished LFP battery packs built around the EVE LF304 280 Ah prismatic cell (datasheet Rev. 2024-09) on a 16S1P configuration (51.2 V nominal / 14.3 kWh), enclosed in a hard-case rack shell with BMS, busbars, and external terminals, packed in wood or plywood crates and consolidated at a Shenzhen origin warehouse for FCL shipment to Apapa or Tin Can Island port in Lagos. It does not cover cell-level shipments (UN3480 alone in inner packaging), damaged/used batteries (UN3481), or assembled packs based on other cell models (e.g. CATL 280 Ah, BYD Blade) — those need re-scoped SOPs because the OEM drop-test envelope and BMS thresholds differ.
| Item | Value | Source |
|---|---|---|
| Cell model | EVE LF304 (LFP prismatic, 3.2 V nominal, 280 Ah, 280×72×207 mm, ~5.42 kg) | EVE LF304 Product Datasheet, Rev. 2024-09 |
| Pack topology | 16S1P rack pack, 51.2 V nominal / 57.6 V max charge / 40 V min discharge, 14.3 kWh | EVE LF304 datasheet + 16S1P rack design (BMS-published limits) |
| Cell IR (AC 1 kHz, fresh) | ≤ 0.30 mΩ per cell (≤ 50 mΩ aggregated pack-level reference) | EVE LF304 datasheet, Rev. 2024-09 |
| Recommended SOC window (shipping) | 30–50 % SOC (per UN38.3 transport guidance for standalone cells) | UN Manual of Tests and Criteria, 7th rev., §38.3.3 |
| Cushion spec (inner pack) | EPE foam, density ≥ 22 kg/m³, thickness ≥ 2 cm, 6-side coverage | Pack-assembly OEM packing drawing (model assumption: confirm against the actual rack pack OEM drawing for your lot) |
| Drop test | 1.0 m onto concrete, 6 faces, pass = no fire / no disassembly / no leak / voltage delta ≤ 0.5 V vs pre-drop on 51.2 V pack | UN Manual of Tests and Criteria, 7th rev., §38.3.4.7 (Test T6) |
| Busbar / terminal torque | M6 terminal: 6–8 N·m; M8 terminal: 10–12 N·m (model assumption: typical LFP rack OEM range; cross-check with your BMS/pack OEM service manual) | Pack-assembly OEM service manual |
| Step # | Action | Owner | Input doc | Output doc | Done-when |
|---|---|---|---|---|---|
| 1 | Receive OEM QC reference set: EVE LF304 datasheet (Rev. 2024-09), pack UN38.3 summary, pack-assembly drawing | Tradvolt QA Lead | EVE LF304 datasheet PDF, OEM UN38.3 summary, pack drawing | QC reference file QCREF-LF304-NG-001.xlsx | All three docs on file and SHA-256 hashed |
| 2 | Witness pre-shipment face-drop test (UN38.3 §T6, 1.0 m onto concrete, 6 faces) on the 51.2 V 16S1P pack at OEM | Tradvolt QA Lead + OEM test tech | OEM test rig record, EVE LF304 datasheet | Signed drop-test witness sheet DROP-WIT-LF304-NG-001.pdf | 6 faces pass; pack voltage delta ≤ 0.5 V vs pre-drop; no fire, leak, or disassembly |
| 3 | Verify inner-pack cushioning (EPE foam density ≥ 22 kg/m³, ≥ 2 cm, all 6 sides) per pack-assembly drawing | Tradvolt QA Lead | Pack-assembly OEM packing drawing | Cushion verification checklist CUSH-VER-LF304-NG-001.pdf | Density, thickness, and 6-side coverage match drawing; scale calibration current |
| 4 | Apply AQL 2.5 visual sampling (ISO 2859-1, General Inspection Level II) at Shenzhen consolidation warehouse | Tradvolt consolidator inspector | AQL sample plan sheet (ISO 2859-1 G-I, AQL 2.5) | AQL inspection report AQL-LF304-NG-001.pdf | Sample drawn; defects ≤ Ac; lot accepted |
| 5 | Book sea freight with UN3480 + Class 9 DG declarations, FIATA Forwarder's Bill of Lading (FWB) | Tradvolt freight forwarder (FIATA-affiliated) | Commercial invoice, packing list, MSDS, UN38.3 §T6 summary | Booking confirmation + FIATA FWB draft BOOK-LF304-NG-001.pdf | Vessel confirmed, slot secured, IMO Class 9 surcharge acknowledged |
| 6 | Apply Incoterms 2020 CIP Lagos (Carriage and Insurance Paid To named destination) | Tradvolt commercial manager | Sales contract | Sales contract with CIP clause CON-LF304-NG-001.pdf | Buyer/seller risk transfer point set at Lagos port (CIP named place) |
| 7 | Submit PRC export declaration via GACC single-window (Shenzhen) | Tradvolt China export agent | Commercial invoice, packing list, contract, DG declaration | Export declaration form EXP-LF304-NG-001.pdf | GACC release note issued |
| 8 | Load container at Shenzhen port and request original FIATA FWB Bill of Lading | Tradvolt freight forwarder | Cargo delivery order | Telex-released Bill of Lading (FWB) BOL-LF304-NG-001.pdf | FWB issued; on-board date recorded |
| 9 | Coordinate Lagos import clearance (SONCAP SC, NIMASA, NAFDAC where required) and pay duties | Tradvolt Nigeria clearing agent | FWB, commercial invoice, packing list, SONCAP SC (issued pre-shipment per SON programme) | Customs release REL-LF304-NG-001.pdf | Goods released by Nigeria Customs Service at Apapa / Tin Can |
| 10 | Receipt QC at Lagos DC: visual + OCV (51.2–57.6 V on pack string) + cell-level IR scan ≤ 50 mΩ aggregate on AQL 2.5 sample | Tradvolt Nigeria DC supervisor | FWB, ISO 2859-1 plan, calibrated OCV/IR tool | Receipt QC report RECV-LF304-NG-001.pdf | Sample within Ac/Re; lot signed off |
| 11 | Quarantine any rejected units and trigger rework/return loop | Tradvolt QA Lead | Receipt QC report | Quarantine register entry QUAR-LF304-NG-001.xlsx | Rejected units physically segregated, tagged, and disposition decided |
| 12 | Final sign-off, ledger update, and archive under lot number | Tradvolt QA Lead | All Step 1–11 outputs | Closed lot folder LOT-LF304-NG-2026-####/ | Folder archived; KPIs (drop-failure %, dwell days) updated |
| Factual claim | Source (named) | URL | Accessed |
|---|---|---|---|
| EVE LF304 is a 3.2 V / 280 Ah LFP prismatic cell from EVE Energy Co., Ltd. — used as the cell baseline for this 16S1P rack pack. | EVE Energy — LF304 product page | https://www.evebattery.com/en/product/LF304.html | 2026-09-21 |
| EVE LF304 dimensional, weight, IR, and voltage envelope cited at Step 2 and Step 10. | EVE LF304 Product Datasheet, Rev. 2024-09 | https://www.evebattery.com/Public/Uploads/uploadfiles/files/20241009/LF304-Product-Datasheet-Rev-2024-09.pdf | 2026-09-21 |
| LFP cells & packs fall under UN3480 (lithium-ion) Class 9 dangerous goods when shipped standalone. | UN Recommendations on the Transport of Dangerous Goods, 21st revised edition (ST/SG/AC.10/1/Rev.21), §2.9.4 — UN3480 listing | https://unece.org/sites/default/files/2023-07/Rev21-Chapter-2.9.pdf | 2026-09-21 |
| UN38.3 §T6 drop test requirement (1.0 m onto concrete, 6 faces) is the OEM-level pass criterion applied at Step 2. | UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, 7th revised edition, §38.3.4.7 (Test T6) | https://unece.org/sites/default/files/2023-07/Rev7-Chapter-38.3.pdf | 2026-09-21 |
| Shipping SOC window for standalone lithium cells (30–50 % SOC) — referenced at Step 1 for transport prep. | UN Manual of Tests and Criteria, 7th rev., §38.3.3 (general testing conditions incl. charge state) | https://unece.org/sites/default/files/2023-07/Rev7-Chapter-38.3.pdf | 2026-09-21 |
| AQL 2.5 General Inspection Level II is the sampling plan applied at Steps 4 and 10. | ISO 2859-1:1999 — Sampling procedures by attributes, Part 1: Single sampling plans by AQL | https://www.iso.org/standard/11464.html | 2026-09-21 |
| LFP stationary pack safety baseline (industrial applications). | IEC 62619:2022 — Secondary lithium cells and batteries for industrial applications | https://webstore.iec.ch/publication/62475 | 2026-09-21 |
| Incoterms 2020 CIP (Carriage and Insurance Paid To) is applied at Step 6. | ICC — Incoterms 2020, official table entry for CIP | https://iccwbo.org/business-solutions/incoterms-rules/incoterms-2020/cip-carriage-and-insurance-paid-to/ | 2026-09-21 |
| FIATA Forwarder's Bill of Lading (FWB) is the negotiable transport document used by the forwarder at Steps 5 and 8. | FIATA — Forwarder's Bill of Lading (FWB) model document description | https://fiata.org/FIATA-Documents/Forwarders-Bill-of-Lading-FWB | 2026-09-21 |
| China Customs single-window is the official PRC export declaration channel used at Step 7. | GACC (General Administration of Customs of China) — International Trade Single Window | http://online.customs.gov.cn/portal/index.html | 2026-09-21 |
| Nigeria import clearance uses SONCAP for regulated products; the SON programme requires an SC issued before shipment. | Standards Organisation of Nigeria — SONCAP Programme (SON Conformity Assessment Programme) | https://son.gov.ng/soncap/ | 2026-09-21 |
| Nigeria Customs Service handles HS-based duty / VAT / levy assessment at Apapa / Tin Can. | Nigeria Customs Service — Tariff & HS information page | https://www.customs.gov.ng/?page_id=93 | 2026-09-21 |
| Tariff classification of lithium-ion accumulators (incl. LFP packs) falls under heading 8507. | USITC HTS — heading 8507 (electric accumulators), current edition | https://hts.usitc.gov/?query=8507 | 2026-09-21 |
| EU CE-marking framework applies to products placed on the EU market; for stationary storage this is typically cross-referenced alongside IEC 62619. | Regulation (EC) No 765/2008, Article 2 (definitions) and Article 15 (CE marking) | https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A32008R0765 | 2026-09-21 |
| Phase | Working days | Cumulative | Depends on |
|---|---|---|---|
| Steps 1–3 (OEM QC prep) | 2 | 2 | EVE LF304 datasheet + OEM UN38.3 summary available |
| Step 4 (AQL at consolidation) | 1 | 3 | Lot sealed at OEM warehouse |
| Steps 5–6 (Booking + Incoterms) | 1 | 4 | AQL pass |
| Step 7 (PRC export clearance, GACC single-window) | 2 | 6 | Vessel booking confirmed, FIATA FWB draft |
| Step 8 (Load + FWB / BOL) | 1 | 7 | GACC release |
| Sea transit Shenzhen → Lagos | 30–35 | 37–42 | On-board FWB date |
| Step 9 (Lagos import clearance + SONCAP) | 3–5 | 40–47 | Vessel arrival + SONCAP SC presented |
| Steps 10–12 (Receipt QC, quarantine, sign-off) | 2 | 42–49 | Nigeria Customs release |
Working-day ranges reflect indicative corridor experience. Actual dwell depends on vessel rotation, Apapa / Tin Can port congestion, and SONCAP verification queue.
QCREF-LF304-NG-001.xlsx — OEM QC reference set index (EVE LF304 datasheet Rev. 2024-09)DROP-WIT-LF304-NG-001.pdf — Pre-shipment drop-test witness sheet (UN38.3 §T6)CUSH-VER-LF304-NG-001.pdf — Inner cushion verification checklist (EPE ≥ 22 kg/m³)AQL-LF304-NG-001.pdf — AQL 2.5 visual inspection report (ISO 2859-1 G-I)BOOK-LF304-NG-001.pdf — Sea-freight booking + IMO Class 9 DG slotCON-LF304-NG-001.pdf — Sales contract with Incoterms 2020 CIP clauseEXP-LF304-NG-001.pdf — PRC export declaration (GACC single-window)BOL-LF304-NG-001.pdf — FIATA Forwarder's Bill of Lading (FWB, telex-released)REL-LF304-NG-001.pdf — Nigeria Customs release noteRECV-LF304-NG-001.pdf — Lagos DC receipt QC report (visual + OCV 51.2–57.6 V + IR)QUAR-LF304-NG-001.xlsx — Quarantine registerLOT-LF304-NG-2026-####/ — Closed lot archive folder| Cost line | Status | Note |
|---|---|---|
| Pre-shipment drop test witness (UN38.3 §T6) | UNCERTAIN | Depends on OEM lab fee; quoted per call-up |
| AQL inspection labour | UNCERTAIN | Depends on lot size & ISO 2859-1 sample count |
| Sea freight + IMO Class 9 DG surcharge | UNCERTAIN | BAF/CAF fluctuate; quoted at booking |
| Insurance (CIP carrier-leg) | UNCERTAIN | ~0.3–0.5 % of cargo value (indicative) |
| PRC export customs fees | UNCERTAIN | Small fixed component |
| Nigeria import duty + VAT + levies | PENDING — lookup | Per HS code lookup (8507.60 likely) at time of clearance |
| SONCAP SC fees | UNCERTAIN | Per consignment; SC required pre-shipment per SON programme |
| Receipt QC at Lagos DC (OCV + IR) | UNCERTAIN | Per lot |
PENDING — lookup. No rates are hardcoded; final figures appear only in the per-shipment quote returned via the CTA below.