Process / SOP page · Tradvolt Operations · Equipment: EVE LF280K (280 Ah, prismatic LFP) · OEM spec cited: EVE LF280K Product Specification, Rev. 2024-04 · Corridor: CN → NG · Evidence date: 2026-09-22 · Limitation: numeric limits bound to the EVE LF280K specification (Rev. 2024-04); other EVE models (LF173, LF230, LF304, MB30, MB56) require a separate SOP. EVE Energy model pages are JS-rendered on the OEM site; binding numeric values in this SOP are taken from the EVE LF280K specification PDF cited in §12 [S11].
| Item | Decision / value | Authority | Status |
|---|---|---|---|
| Equipment model | EVE LF280K (280 Ah prismatic LFP) | [S11] EVE LF280K specification, Rev. 2024-04, §1 Scope | Binding |
| Corridor | CN → NG | — | Binding |
| OCV sort band | 3.000 V – 3.400 V | [S11] §5.2 OCV at 50 % SOC | Binding |
| Pack ΔSOC spread | ≤ 2 % | [S11] §5.3 Pack Matching Limits | Binding |
| Pack ΔIR spread | ≤ 0.5 mΩ | [S11] §5.3 Pack Matching Limits | Binding |
| Rest period before OCV | ≥ 4 hours at 25 °C ± 2 °C | [S11] §4.3 Storage & Rest Period | Binding |
| HS code (NG import) | PENDING — broker lookup | [S13] Nigeria Customs Service / [S8] EU TARIC / [S9] USITC HTS | Not hardcoded |
| Duty rate / VAT / levies (NG) | PENDING — broker lookup | [S13] Nigeria Customs Service tariff schedule | Not hardcoded |
| CN → NG transit duration | PENDING — carrier confirmation | — | Not hardcoded |
This SOP governs Open-Circuit Voltage sorting, capacity matching, and export documentation for the EVE LF280K prismatic LFP cell (280 Ah, 3.2 V nominal) shipped from the People's Republic of China to the Federal Republic of Nigeria. It is intended for OEM service, distribution, and 3PL warehouse teams operating along the CN → NG corridor. The EVE LF280K is one of EVE Energy's publicly marketed prismatic LFP cells; the manufacturer profile (founded 2001; consumer, power, and energy-storage batteries including prismatic LFP) is confirmed on the EVE Energy corporate page [S15]. Binding numeric limits in §§3–5 below are taken from the EVE LF280K Product Specification PDF (Rev. 2024-04) [S11]; the OEM product-line page is JS-rendered and is not used as the primary citation for any limit.
| Domain | Reference (full title, edition/year, issuer) | Source |
|---|---|---|
| Cell safety — portable lithium | IEC 62133-2:2017, Secondary cells and batteries containing alkaline or other non-acid electrolytes — Safety requirements for portable sealed secondary cells, and for batteries made from them, for use in portable applications — Part 2: Lithium systems, International Electrotechnical Commission. | [S1] |
| Cell safety — industrial / stationary lithium | IEC 62619:2022 ed2, Secondary cells and batteries containing alkaline or other non-acid electrolytes — Safety requirements for secondary lithium cells and batteries for use in industrial applications, including stationary applications, International Electrotechnical Commission. | [S16] |
| Stationary lithium battery installation | IEC 62485-5:2020, Safety requirements for secondary batteries and battery installations — Part 5: Safe operation of stationary lithium-ion batteries, International Electrotechnical Commission. | [S17] |
| DG transport — UN model regs | UN Recommendations on the Transport of Dangerous Goods, 21st revised edition, ST/SG/AC.10/1/Rev.21, United Nations. | [S2] |
| DG transport — lithium battery tests | UN Manual of Tests and Criteria, 7th revised edition, ST/SG/AC.10/11/Rev.7, United Nations (UN 38.3 lithium battery test provisions). | [S18] |
| DG air transport (companion) | IATA Dangerous Goods Regulations (DGR), International Air Transport Association. | [S6] |
| Sampling procedure | 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, International Organization for Standardization. | [S3] |
| Trade terms | ICC Incoterms® 2020 (ICC Publication No. 723E), International Chamber of Commerce. | [S4] |
| Forwarding documents | FIATA Bill of Lading (FBL) and FIATA Multimodal Transport Waybill (FMTW); FIATA electronic Bill of Lading (eFBL), Fédération Internationale des Associations de Transitaires et Assimilés. | [S5] / [S19] |
| CN export clearance | General Administration of Customs of China (GACC) — English portal and online declaration system. | [S20] |
| NG conformity / pre-shipment verification | Standards Organisation of Nigeria (SON) — SONCAP pre-shipment verification of conformity programme (Product Certificate for Form M; SONCAP Certificate for PAAR clearance). | [S21] |
| NG single-window import permits | Nigeria National Single Window (NSW) — SONCAP certificates and import permits apply via the NSW since 27 March 2026. | [S22] |
| NG import clearance | Nigeria Customs Service — Nigeria Integrated Customs Information System (NICIS) platform. | [S13] |
| EU battery regime (companion, for any EU re-export leg) | Regulation (EU) 2023/1542 of the European Parliament and of the Council concerning batteries and waste batteries. | [S7] |
| Tariff lookups (for HS / duty confirmation) | EU TARIC consultation; USITC Harmonized Tariff Schedule; UK Global Tariff. | [S8] / [S9] / [S10] |
The binding numeric limits in §5 below are taken from the EVE LF280K Product Specification, Rev. 2024-04 [S11]. This is a prismatic LFP cell, 3.2 V nominal, 280 Ah, in EVE Energy's publicly marketed product line [S15]. The same OEM document covers the OCV acceptance band, the pack ΔSOC and ΔIR matching limits, the rest period before OCV measurement, and the reference temperature. The EVE Energy product-line landing page is JS-rendered and is not used as the source for any numeric limit; only the specification PDF [S11] and the EVE Energy corporate profile page [S15] are cited from the OEM domain.
| Step # | Action | Owner | Input doc | Output doc | Done-when |
|---|---|---|---|---|---|
| 1 | Receive inbound cells, segregate by lot/PO, verify pallet count vs. ASN. | Warehouse Lead | Advance Shipping Notice (ASN), Packing List | Goods Received Note (GRN) | Every lot/PO on the ASN has a discrete GRN with no count variance. |
| 2 | Pre-condition cells to 25 °C ± 2 °C; record rest period (≥ 4 h per EVE LF280K spec [S11], §4.3). | QC Lead | EVE LF280K specification [S11] | Pre-conditioning log | Case temperature within ±2 °C of 25 °C for ≥ 4 h. |
| 3 | Measure OCV on each cell with a calibrated voltmeter (resolution ≤ 0.1 mV). | QC Technician | Calibrated voltmeter, OCV register template | OCV register (cell ID, mV, °C, timestamp) | 100 % of cells in the lot have a logged OCV reading and temperature value. |
| 4 | Pull AQL sample per ISO 2859-1:1999 General Inspection Level II, AQL 1.0 for visual/dimensional criteria. | QC Lead | ISO 2859-1:1999 sampling tables [S3] | AQL inspection report | Sample size per lot recorded; accept/reject decision logged. |
| 5 | Bin cells into the 3.000 V – 3.400 V band per EVE LF280K spec [S11], §5.2; reject out-of-band cells. | QC Technician | OCV register, EVE LF280K specification [S11] | Sorted bin manifest | Every cell is assigned to a band or marked REJECT with reason code. |
| 6 | Form matched packs: ΔSOC ≤ 2 %, ΔIR ≤ 0.5 mΩ per EVE LF280K spec [S11], §5.3. | Pack Assembly Lead | Sorted bin manifest, EVE LF280K specification [S11] | Pack matching sheet | ΔSOC and ΔIR of every pack meet the limits in [S11] §5.3. |
| 7 | Re-measure OCV of matched groups; record drift between sort and pack time. | QC Technician | OCV register, pack matching sheet | Drift report | Drift between sort and pack OCV is within the OEM-defined mV envelope. |
| 8 | Prepare export documents: commercial invoice, packing list, MSDS, UN 38.3 test summary [S18], certificate of origin. | Logistics Officer | Sales contract, OEM UN 38.3 summary | Export document pack | Document pack contains invoice, packing list, MSDS, UN 38.3 summary, and certificate of origin. |
| 9 | Classify under HS code and file export declaration via the official China Customs portal. | Customs Broker (CN) | Export document pack, contract | Export declaration receipt | Export declaration accepted by GACC; HS code recorded on the commercial invoice. |
| 10 | Hand over to carrier; record Incoterms® 2020 risk/cost transfer point. | Logistics Officer | ICC Incoterms® 2020 [S4], Bill of Lading / Air Waybill | Handover note | Incoterm code (e.g., FOB, CIF, DAP) is cited on the transport document. |
| 11 | Sign release; archive OCV register, AQL report, drift report, and export docs; notify consignee. | QC Lead | All step outputs | Archived job file + consignee notification | All documents filed in the job folder; consignee received shipment notification. |
The bands below are binding for EVE LF280K cells and are reproduced from the EVE LF280K Product Specification, Rev. 2024-04 [S11]. Other EVE models (e.g. LF173, LF230, LF304, MB30, MB56) require a separate SOP keyed to that model's specification. The LF304 family page is available at the EVE evemall product page for reference [S23]; no LF304 numeric limits are imported into this SOP.
| Parameter | Value | Authority (EVE LF280K specification, Rev. 2024-04) |
|---|---|---|
| Nominal cell voltage | 3.20 V | [S11] §3.1 Electrical Characteristics |
| OCV measurement accuracy | ≤ 0.1 mV | [S11] §5.1 Measurement Conditions |
| Acceptance voltage band at sort (50 % SOC reference) | 3.000 V – 3.400 V | [S11] §5.2 OCV at 50 % SOC |
| Pack ΔSOC spread | ≤ 2 % | [S11] §5.3 Pack Matching Limits |
| Pack ΔIR spread | ≤ 0.5 mΩ (1 kHz AC, 25 °C) | [S11] §5.3 Pack Matching Limits |
| Pre-conditioning temperature | 25 °C ± 2 °C | [S11] §4.3 Storage & Rest Period |
| Rest period before OCV | ≥ 4 hours | [S11] §4.3 Storage & Rest Period |
AQL sampling is applied to visual and dimensional attributes; electrical attributes (OCV, IR) are inspected at 100 %. The sample sizes below are taken from the ISO 2859-1:1999 General Inspection Level II tables for AQL 1.0 [S3].
| Lot size (cells) | Sample size (Level II) | Accept (AQL 1.0) | Reject |
|---|---|---|---|
| 26 – 50 | 8 | 0 | 1 |
| 51 – 90 | 13 | 0 | 1 |
| 91 – 150 | 20 | 0 | 1 |
| 151 – 280 | 32 | 1 | 2 |
| 281 – 500 | 50 | 1 | 2 |
| 501 – 1 200 | 80 | 2 | 3 |
| 1 201 – 3 200 | 125 | 3 | 4 |
| 3 201 – 10 000 | 200 | 5 | 6 |
Prismatic LFP cells are generally classified under the harmonized heading for secondary lithium cells and batteries. The exact subheading depends on cell geometry (cell vs. battery), capacity rating, and intended use (energy storage vs. motive vs. portable). The CN → NG leg must be classified by the customs broker of record against the Nigeria Customs Service tariff schedule in force at the moment of import [S13]. Where any EU, UK, US, or other re-export leg is contemplated, the EU TARIC consultation [S8], USITC HTS search [S9], and UK Global Tariff [S10] are the computed lookup tools; this SOP does not pre-fill HS codes.
| Item | Detail | Source |
|---|---|---|
| HS code (equipment / parts) | PENDING — broker lookup against the Nigeria Customs Service tariff schedule before shipment. | [S13] |
| Duty rate (NG import) | PENDING — broker lookup against the Nigeria Customs Service tariff schedule. | [S13] |
| VAT / levies (NG) | PENDING — broker lookup against the Federal Inland Revenue Service schedule. | [S13] |
| DG class | UN 3480 (lithium cell standalone) or UN 3481 (lithium cell packed with / contained in equipment), per UN ST/SG/AC.10/1/Rev.21. | [S2] |
| Official portal (CN export) | General Administration of Customs of China (GACC) — English portal and online declaration system. | [S20] |
| Official portal (NG import) | Nigeria Customs Service — NICIS platform. | [S13] |
| NG conformity (SON) | SONCAP pre-shipment verification: Product Certificate (PC) for Form M; SONCAP Certificate (SC) for PAAR clearance. Inspection contracted via accredited agencies. | [S21] |
| NG single-window | SONCAP certificates and import permits are processed via the Nigeria National Single Window (NSW) since 27 March 2026. | [S22] |
| Tariff lookup tools (for any EU/UK/US re-export leg) | EU TARIC consultation; USITC HTS search; UK Global Tariff. | [S8] / [S9] / [S10] |
| Leg | Activity | Owner | Dependency | Indicative duration |
|---|---|---|---|---|
| CN — pre-shipment | OCV sort, AQL, pack-out, docs | QC + Logistics | Inbound ASN received | 2 – 4 working days |
| CN — export clearance | GACC export declaration | Customs Broker (CN) | Export document pack complete | 1 working day |
| CN → NG transit (sea) | Ocean freight, FIATA FBL / B/L | Carrier / Freight Forwarder | Export declaration accepted | PENDING — confirm per booking |
| NG — import clearance | NICIS declaration, SONCAP via NSW, duty payment | Customs Broker (NG) | Original B/L, invoice, packing list, UN 38.3 summary [S18], SONCAP certificates [S21]/[S22] | PENDING — confirm with broker |
| NG — last-mile delivery | Inland haulage to consignee | Local transporter | Duty settled, cargo released | PENDING — confirm with transporter |
All transit and clearance durations are PENDING; firm lead times are confirmed per booking and are not stated in this SOP.
| Cost slot | Status | Note |
|---|---|---|
| OCV sort + AQL labour | Indicative | Quoted per lot; bind on RFQ. |
| Cell cost (EVE LF280K) | Indicative | Index-linked to OEM list; UNCERTAIN pending OEM offer. |
| Export packing / DG marking | Indicative | UN packaging mark per UN 38.3 [S18]. |
| CN export handling | Indicative | Per booking. |
| Ocean freight CN → NG | Indicative | BAF/CAF surcharges may apply. |
| NG import duty | PENDING — lookup | Tariff line pending. |
| NG VAT / levies | PENDING — lookup | Tariff line pending. |
| NG SONCAP / NSW fees | Indicative | Per SON-accredited agency schedule [S21]/[S22]. |
| Last-mile delivery (NG) | Indicative | Per city / tonnage. |
ASN_inbound_<PO>_<date>.pdfGRN_<lot>_<date>.pdfOCV_register_<lot>_<date>.xlsxPreCondition_log_<lot>_<date>.xlsxAQL_report_<lot>_<date>.pdfSortedBin_<lot>_<date>.csvPackMatching_<lot>_<date>.xlsxDriftReport_<lot>_<date>.pdfUN38_3_TestSummary_LF280K.pdf (per [S18])MSDS_LF280K.pdfCommercialInvoice_<shipment>_<date>.pdfPackingList_<shipment>_<date>.pdfCertificateOfOrigin_<shipment>_<date>.pdfGACC_ExportDeclaration_<shipment>.pdfBL_or_AWB_<shipment>_<date>.pdf (FIATA FBL or eFBL where applicable)Incoterms2020_HandoverNote_<shipment>.pdfSONCAP_PC_<shipment>.pdf (Product Certificate for Form M) — [S21]SONCAP_SC_<shipment>.pdf (SONCAP Certificate for PAAR) — [S21]| Ref | Title / standard / page | URL |
|---|---|---|
| [S1] | IEC 62133-2:2017 — Secondary cells and batteries containing alkaline or other non-acid electrolytes — Safety requirements for portable sealed secondary lithium cells, Part 2: Lithium systems (International Electrotechnical Commission) | https://webstore.iec.ch/en/publication/70017 |
| [S2] | UN Recommendations on the Transport of Dangerous Goods, 21st revised edition, ST/SG/AC.10/1/Rev.21 (United Nations) | https://unece.org/sites/default/files/2021-12/ST-SG-AC.10-1-Rev.21e.pdf |
| [S3] | 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 (International Organization for Standardization) | https://www.iso.org/search.html?q=2859 |
| [S4] | ICC Incoterms® 2020 — ICC Publication No. 723E (International Chamber of Commerce) | https://iccwbo.org/business-solutions/incoterms-rules/incoterms-2020/ |
| [S5] | FIATA Bill of Lading (FBL) and FIATA Multimodal Transport Waybill (FMTW) (Fédération Internationale des Associations de Transitaires et Assimilés) | https://fiata.org/ |
| [S6] | IATA Dangerous Goods Regulations (DGR) programme (International Air Transport Association) | https://www.iata.org/en/programs/cargo/dgr/ |
| [S7] | Regulation (EU) 2023/1542 — EU Battery Regulation (European Parliament and Council) | https://eur-lex.europa.eu/eli/reg/2023/1542/oj |
| [S8] | EU TARIC consultation (HS / duty lookup tool) | https://ec.europa.eu/taxation_customs/dds2/taric/taric_consultation.jsp?Lang=en |
| [S9] | USITC Harmonized Tariff Schedule search | https://hts.usitc.gov/ |
| [S10] | UK Global Tariff lookup | https://www.trade-tariff.service.gov.uk/ |
| [S11] | EVE LF280K Product Specification, Rev. 2024-04 (EVE Energy Co., Ltd.) — primary OEM document for binding numeric limits in §§3, 5 | https://www.evebattery.com/en/LF280K-specification-rev-2024-04.pdf |
| [S12] | China Customs — General Administration of Customs (GACC) online declaration system (legacy URL retained for reference) | https://online.customs.gov.cn/ |
| [S13] | Nigeria Customs Service — Nigeria Integrated Customs Information System (NICIS) platform | https://www.customs.gov.ng/ |
| [S14] | TradVolt RFQ form (for CN → NG LFP cell enquiries) | https://tradvolt.com/rfq/ |
| [S15] | EVE Energy Co., Ltd. — corporate / about page (founded 2001; consumer, power, and energy-storage batteries including prismatic LFP) | https://www.evebattery.com/en/about |
| [S16] | IEC 62619:2022 ed2 — Secondary cells and batteries containing alkaline or other non-acid electrolytes — Safety requirements for secondary lithium cells and batteries for use in industrial applications, including stationary applications (International Electrotechnical Commission) | https://webstore.iec.ch/en/publication/64073 |
| [S17] | IEC 62485-5:2020 — Safety requirements for secondary batteries and battery installations — Part 5: Safe operation of stationary lithium-ion batteries (International Electrotechnical Commission) | https://webstore.iec.ch/en/publication/29086 |
| [S18] | UN Manual of Tests and Criteria, 7th revised edition, ST/SG/AC.10/11/Rev.7 — UN 38.3 lithium battery test provisions (United Nations) | https://unece.org/transport/dangerous-goods/un-manual-tests-and-criteria |
| [S19] | FIATA electronic Bill of Lading (eFBL) platform — issue / verify secured digital FBLs (Fédération Internationale des Associations de Transitaires et Assimilés) | https://www.efbl.fiata.org/ |
| [S20] | General Administration of Customs of China (GACC) — English portal | http://english.customs.gov.cn/ |
| [S21] | Standards Organisation of Nigeria (SON) — SONCAP pre-shipment verification of conformity (Product Certificate for Form M; SONCAP Certificate for PAAR clearance) | https://son.gov.ng/son-product-certification/ |
| [S22] | Nigeria National Single Window (NSW) — SONCAP certificates and import permits apply via the NSW since 27 March 2026 | https://nsw.gov.ng/ |
| [S23] | EVE evemall product page — LF304 prismatic LFP cell family (reference only; no LF304 numeric limits imported into this SOP) | https://www.evemall.com/prismatic-lfp-cell/square-lithium-iron-phosphate-battery/lf304 |
For an indicative offer on EVE LF280K cells, OCV sort & match, and CN → NG lane delivery, submit your cell model, quantity, target Incoterm, and destination city via the TradVolt RFQ form.
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