This SOP governs incoming vertical LFP prismatic cells (named candidate part numbers: EVE LF280K, CATL 280Ah prismatic LFP, BYD Blade, Gotion LFP prismatic — buyer to confirm at PO) shipped on the CN→MX corridor, in 12 steps over an indicative 22–43 calendar days end-to-end (pre-shipment 3–5 d + transit 15–30 d + reception 3–5 d + clearance 1–3 d). Acceptance is per the controlling OEM cell datasheet and OEM service manual at AQL 1.0 (electrical) / AQL 2.5 (cosmetic) under ISO 2859-1:1999 Level II. HS code candidate 8507.60 (TIGIE lookup pending); duty rate is PENDING SAT TIGIE lookup at filing. Concrete bin thresholds (charge 3.65 V, discharge 2.5 V, SOC window 30–50 %, DC IR ≤ 0.25 mΩ, terminal torque 8–10 Nm) are model assumptions drawn from the EVE LF280K family literature and the OEM module-level service manual revision EV-LF280K-SVC-Rev2; the actual per-cell datasheet PDF is NDA-gated for this cell family and must be supplied by the buyer at PO before any production acceptance decision.
| Item | Value |
|---|---|
| Equipment family | Vertical LFP prismatic cells (industrial grade) |
| Location / corridor | CN (origin) → MX (destination; SAT/VUCEM clearance) |
| Horizon | 12 steps; indicative 22–43 calendar days end-to-end |
| Evidence-date | Source rows accessed 2026-09-22 |
| Key limitation | Concrete bin thresholds for the EVE LF280K (3.65 V / 2.5 V / 30–50 % SOC / ≤ 0.25 mΩ / 8–10 Nm) are model assumptions; the OEM per-cell datasheet PDF and the EVE module-level service manual revision EV-LF280K-SVC-Rev2 are NDA-gated. For cell part numbers other than EVE LF280K, thresholds must be supplied by the buyer at PO. |
This SOP defines the standard workflow for capacity-divide (binning) of incoming vertical LFP prismatic cells shipped on the China→Mexico corridor. It covers Advance Shipment Notice verification, Incoterms handover, sampling under ISO 2859-1:1999, electrical characterisation, bin assignment, customs preparation, and release to pack assembly.
Acceptance thresholds and test profiles are taken from the controlling OEM cell datasheet and the OEM service manual for the specific cell part number. For the named EVE LF280K part number, the concrete thresholds listed in §2 (charge 3.65 V, discharge 2.5 V, SOC window 30–50 %, DC IR ≤ 0.25 mΩ, terminal torque 8–10 Nm per the EVE module-level service manual revision EV-LF280K-SVC-Rev2) are model assumptions drawn from the publicly accessible EVE corporate English site literature for the LF280K family; the OEM per-cell datasheet PDF and the named service manual revision are NDA-gated. For other named cell families (CATL 280Ah prismatic LFP, BYD Blade, Gotion LFP prismatic), the buyer must supply the controlling OEM datasheet revision at PO; this SOP defers those limits to the OEM-controlled document.
Only the following named source categories are used. No blog, marketplace, or non-official references appear in this SOP. Where the controlling document is NDA-gated, the row is marked accordingly and the controlling thresholds must be supplied by the buyer at PO.
EV-LF280K-SVC-Rev2: NDA-gated — buyer to provide at PO. Concrete limits referenced throughout this SOP for the EVE LF280K part number (end-of-charge 3.65 V, end-of-discharge 2.5 V, storage SOC 30–50 %, DC IR ≤ 0.25 mΩ new at 1 kHz AC @ 50 % SOC, terminal torque 8–10 Nm) are model assumptions derived from the EVE corporate English site literature for the LF280K family; the controlling per-cell datasheet PDF and the named service manual revision are NDA-gated and must be supplied by the buyer at PO before any production acceptance decision.EV-LF280K-SVC-Rev2; that document is NDA-gated — buyer to provide at PO. For CATL 280Ah, BYD Blade, and Gotion LFP prismatic, the buyer to provide the OEM service manual revision under NDA — Tradvolt does not host. A bilingual sample template is available at /rfq/.| Parameter | Value | Source |
|---|---|---|
| Terminal torque (M6 stud, module-level) | 8–10 Nm | Model assumption (EVE module-level service manual revision EV-LF280K-SVC-Rev2 — NDA-gated, buyer to provide at PO) |
| End-of-charge voltage | 3.65 V | Model assumption (EVE corporate English site literature for LF280K family — https://www.evebattery.com/en) |
| End-of-discharge voltage | 2.5 V | Model assumption (EVE corporate English site literature for LF280K family — https://www.evebattery.com/en) |
| Storage SOC window at delivery | 30–50 % | Model assumption (EVE corporate English site literature for LF280K family — https://www.evebattery.com/en) |
| DC internal resistance (new, 1 kHz AC @ 50 % SOC) | ≤ 0.25 mΩ | Model assumption (EVE module-level service manual revision EV-LF280K-SVC-Rev2 — NDA-gated, buyer to provide at PO) |
| Nominal capacity | 280 Ah @ 0.5 C | Model assumption (EVE corporate English site literature for LF280K family — https://www.evebattery.com/en) |
| Claim | Source (name) | URL | Accessed |
|---|---|---|---|
| ISO 2859-1:1999 defines General Inspection Levels (I/II/III) and AQL for attribute inspection. | ISO 2859-1:1999 (product page) | https://www.iso.org/standard/114204.html | 2026-09-22 |
| ICC Incoterms 2020 (effective 2020-01-01) defines 11 terms of delivery including DAP, DDP, CIF, FOB. | ICC Incoterms 2020 (official rules page) | https://iccwbo.org/business-solutions/incoterms-rules/incoterms-2020/ | 2026-09-22 |
| FIATA standard multimodal transport documents include the FIATA Bill of Lading (FBL) and the FIATA Warehouse Receipt (FWR). | FIATA documents page | https://fiata.org/ | 2026-09-22 |
| Mexico customs entries are filed through the VUCEM (Ventanilla Única de Comercio Exterior Mexicano) portal operated by SAT. | SAT / VUCEM portal entry page | https://www.sat.gob.mx/portal/public/default.aspx?id=articuloTrans&idCategoria=2&idArticulo=21273 | 2026-09-22 |
| China customs declarations and exports are processed through the General Administration of Customs of the PRC. | GACC English portal entry | http://english.customs.gov.cn/service/list/130.html | 2026-09-22 |
| UN Recommendations on the Transport of Dangerous Goods (UNRTDG) classify lithium cells under UN 3480 / UN 3481; Manual of Tests & Criteria defines the UN 38.3 test suite. | UNECE UNRTDG and Manual of Tests | https://unece.org/transport/dangerous-goods/un-manual-tests-and-criteria | 2026-09-22 |
| IEC 62619:2022 specifies safety requirements for secondary lithium cells used in industrial applications. | IEC 62619 product page | https://webstore.iec.ch/publication/60947 | 2026-09-22 |
| EVE Energy markets the LF280K as a 3.2 V / 280 Ah vertical prismatic LFP cell for energy-storage applications (corporate English site). | EVE Energy corporate site (English) | https://www.evebattery.com/en | 2026-09-22 |
| BYD markets the "Blade Battery" LFP cell format for electric vehicles and storage applications. | BYD Blade Battery product page | https://www.bydglobal.com/en/BladeBattery.html | 2026-09-22 |
| CATL publishes its energy-storage cell family on its corporate English site; cell-level datasheet revisions are NDA-gated. | CATL energy storage family page | https://www.catl.com/en/ess/ | 2026-09-22 |
For the EVE LF280K: end-of-charge 3.65 V, end-of-discharge 2.5 V, storage SOC 30–50 %, terminal torque 8–10 Nm, DC IR ≤ 0.25 mΩ new at 1 kHz AC @ 50 % SOC. Listed as model assumptions; the EVE per-cell datasheet PDF and the EVE module-level service manual revision EV-LF280K-SVC-Rev2 are NDA-gated and must be supplied by the buyer at PO. | EVE corporate English site (LF280K family literature) — NDA-gated per-cell datasheet & service manual rev EV-LF280K-SVC-Rev2 (buyer to provide at PO) | https://www.evebattery.com/en | 2026-09-22 |
| Step # | Action | Owner | Input doc | Output doc | Done-when |
|---|---|---|---|---|---|
| 1 | Receive Advance Shipment Notice (ASN); reconcile PO, BL, and FIATA document set. | Logistics Coordinator | Purchase Order; FIATA Bill of Lading | Reconciled ASN register | Cell count, part number (e.g., EVE LF280K), and lot IDs match PO line by line. |
| 2 | Apply ICC Incoterms 2020 handover check (risk transfer point, cost allocation, document set). | Logistics Coordinator | Agreed Incoterms 2020 rule in contract | Incoterms handover checklist | Handover checklist signed and filed; risk transfer date logged. |
| 3 | Draw random sample per ISO 2859-1:1999, General Inspection Level II; AQL 1.0 for electrical, AQL 2.5 for cosmetic. | QA Inspector | Lot size; ISO 2859-1:1999 Table II-A | Sampling record | Sample size recorded; sample drawn from sealed pallets under witness. |
| 4 | Run standardized capacity test on formation/cycling equipment per OEM datasheet profile (charge 3.65 V / discharge 2.5 V per EVE LF280K; C-rate, temperature per OEM rev). | Test Technician | OEM cell datasheet (e.g., EVE LF280K — NDA-gated, buyer to provide at PO); EVE module-level service manual rev EV-LF280K-SVC-Rev2 (NDA-gated); cycler program ID |
Capacity test report (Ah) | Capacity values logged per cell serial against datasheet minimum. |
| 5 | Measure DC internal resistance (IR) at 1 kHz AC @ 50 % SOC and open-circuit voltage (OCV); reject cells above 0.25 mΩ (EVE LF280K) or outside the controlling OEM window. | Test Technician | EVE corporate English site (LF280K family literature); EVE module-level service manual rev EV-LF280K-SVC-Rev2 (NDA-gated); IR/OCV work instruction |
IR/OCV report | Every sampled cell has IR in mΩ and OCV in V within the OEM window, or is rejected. |
| 6 | Assign capacity bin per OEM datasheet bins; apply bin-tolerance rule (model assumption: ±2 % of nominal Ah pending OEM datasheet confirmation at PO). | QA Inspector | Capacity test report; OEM bin map | Cell-level bin assignment record | Each cell carries a bin label; mixed bins segregated by lot. |
| 7 | Cosmetic and dimensional check per OEM datasheet and service manual (cracks, dents, terminal height, vent condition). | QA Inspector | OEM datasheet; OEM service manual | Cosmetic inspection report | Zero defects above AQL 2.5 cosmetic threshold; otherwise quarantine. |
| 8 | Quarantine non-conforming cells; issue Non-Conformance Report (NCR); trigger CAPA flow. | QA Manager | Inspection reports; NCR template | NCR; CAPA record | Non-conforming lot physically segregated and labelled; NCR logged. |
| 9 | Prepare MX inbound documentation: commercial invoice, packing list, Certificate of Conformance (CoC), MSDS per UN UNRTDG, UN 38.3 test summary. | Logistics Coordinator | Sales contract; OEM CoC template; UN 38.3 test summary | MX inbound dossier | Dossier complete, signed, and uploaded to customs broker file share. |
| 10 | File customs entry via official SAT / VUCEM portal; pay applicable duties (see Duty / HS block). | Customs Broker | MX inbound dossier; HS code | Pedimento; VUCEM acknowledgement | Customs acknowledgement received; goods released for inland transit. |
| 11 | Reconcile received quantity vs. accepted quantity; compute reject rate and lot acceptance. | QA Manager | Reception record; test reports | Lot acceptance record | Reject rate ≤ AQL; signed off. |
| 12 | Archive records for OEM-defined retention period; release binned cells to pack assembly. | QA Manager | All prior outputs | Archive pack; release note | Records stored; binned cells moved to WIP with bin label visible. |
ASN_<PO>_<yyyy-mm-dd>.pdfIncoterms2020_HandoverChecklist_<PO>.pdfISO2859-1_SamplingRecord_<PO>_<lot>.xlsxCapacityTestReport_<PO>_<lot>.csvIR_OCV_Report_<PO>_<lot>.csvBinAssignment_<PO>_<lot>.xlsxCosmeticInspection_<PO>_<lot>.pdfNCR_<PO>_<lot>_<n>.pdfMXInboundDossier_<PO>.zip (Commercial Invoice, Packing List, CoC, MSDS, UN 38.3 test summary)VUCEM_Acknowledgement_<pedimento>.pdfLotAcceptance_<PO>_<lot>.pdfArchivePack_<PO>.tar.gz| Phase | Activity | Depends on | Indicative duration |
|---|---|---|---|
| Pre-shipment (CN) | ASN, OEM CoC, UN 38.3 test summary ready | PO confirmed; OEM datasheet under NDA | indicative: 3–5 working days |
| Transit | Sea/air/road CN→MX per agreed Incoterms 2020 | Step 1, 2 complete | indicative: 15–30 days (sea) |
| Reception (MX) | Unpack, sample, electrical test, bin | Customs release | indicative: 3–5 working days |
| Clearance | VUCEM filing and duty payment | HS code confirmed; importer records in order | indicative: 1–3 working days |
| Release | To pack assembly | Lot acceptance signed | same day |
Durations are indicative and depend on carrier schedule, customs workload, and OEM test queue. They are not lead-time commitments.
| Item | Value |
|---|---|
| Goods description | Vertical LFP prismatic lithium-ion cells, industrial grade (e.g., EVE LF280K, CATL 280Ah prismatic LFP, BYD Blade, Gotion LFP prismatic) |
| HS code candidate (Mexico TIGIE) | 8507.60 — Lithium-ion batteries (verify against current TIGIE) |
| Alternative / subheading | 8507.60.01 or 8507.60.99 — confirm against current SAT TIGIE text |
| Ad valorem rate | PENDING — lookup against current SAT TIGIE / Ley de los IMP |
| Non-tariff requirements | UN 38.3 transport test summary; NOM where applicable (verify per SAT portal) |
| Official customs portal (lookup entry) | SAT / VUCEM — VUCEM portal entry |
| TIGIE lookup resource | SAT — Trade & Customs (VUCEM) · SAT TIGIE table |
| Filing reference | Pedimento de importación (Definitivo) |
| Cost slot | Status | Notes |
|---|---|---|
| Cell unit cost | indicative — per PO | Per OEM datasheet part number (e.g., EVE LF280K); set in PO line. |
| Freight (CN→MX) | indicative — per quote | Depends on Incoterms 2020 rule (e.g., CIF vs. FOB). |
| Insurance | indicative — 0.X % of cargo value | Required under CIF/CIP. |
| Customs duties | UNCERTAIN — lookup | See Duty / HS block. PENDING against current SAT TIGIE. |
| Deminimis / VAT | UNCERTAIN — lookup | IVA treatment to be confirmed by broker. |
| Binning labour & cycler time | indicative — per hour / per cell | Driven by QA throughput target. |
| Rejection / scrap provision | indicative — AQL-driven | Based on historical reject rate at AQL 1.0 electrical. |
EV-LF280K-SVC-Rev2 are NDA-gated and must be supplied by the buyer at PO. For other named cell families (CATL 280Ah prismatic LFP, BYD Blade, Gotion LFP prismatic), the controlling OEM cell datasheet revision supplied by the buyer at PO applies.EV-LF280K-SVC-Rev2 (NDA-gated; buyer to provide at PO).Any cell failing acceptance at any step is physically segregated, labelled, and recorded on a Non-Conformance Report. The CAPA owner is the QA Manager. Disposition options are: return to OEM, rework, scrap. Acceptance of the lot is suspended until the NCR is closed.
For project-specific pricing, test queue slots, or a tailored SOP based on your OEM datasheet, submit the form below with the cell part number, annual volume, target arrival cadence, and target Incoterm.