Process / SOP — Battery Pack IP67 Seal Integrity Test CORRIDOR CN→FR

Document type: Standard Operating Procedure (Process) | Vertical: LFP lithium-ion battery packs | Revision: 1.2 | Effective: 2026-09-22

Verdict (read first). This SOP applies to the CATL LFP 280Ah prismatic cell family (cell designation LFP-280K, used in packs such as the CATL EnerC container and rack modules integrated by system OEMs). The decision rule is binary: ACCEPT when no ingress is observed at IP67 (1 m / 30 min per IEC 60529 ed. 2.2), insulation-resistance delta stays within the threshold stated in the CATL LFP 280Ah Module Service Manual — Rev. 2024-03 (lot-specific revision supplied per shipment), and the AQL 1.0 (ISO 2859-1:1999 General Inspection Level II) sample is clean; otherwise REJECT or 100 % re-screen. Indicative end-to-end horizon is ≈3 working days from container arrival to PRC GACC export declaration. Action for the procurement reader: confirm HS 8507.60 against PRC GACC and EU TARIC at the moment of booking, because duty, VAT and Regulation (EU) 2023/1542 obligations are time-sensitive and not hard-coded on this page.

Decision table (compact)

Equipment family	OEM reference	Horizon	Evidence date	Outcome	Limitation
CATL LFP 280Ah prismatic module family (LFP-280K cell as used in EnerC / rack packs)	CATL LFP 280Ah Module Service Manual — Rev. 2024-03 (lot-specific revision supplied per shipment); reference download: https://www.catl.com/en/ess/	≈3 working days (sampling → CoC → PRC GACC export declaration)	2026-09-22	Accept if IP67 pass + IR-Δ within OEM threshold + AQL 1.0 clean; otherwise Reject / 100 % Screen	HS 8507.60 / EU duty / Regulation (EU) 2023/1542 obligations must be re-verified at booking

Claim: CATL markets a 280Ah LFP prismatic cell family used in EnerC container and rack storage products; exact cell-level datasheet is JS-rendered on the CATL ESS hub and confirmed at RFQ. | Src: CATL ESS product hub | URL: https://www.catl.com/en/ess/ | accessed: 2026-09-22

Claim: Lot-level torque and IR-Δ thresholds used on this corridor are taken from the CATL LFP 280Ah Module Service Manual — Rev. 2024-03; the revision number is supplied per shipment in the lot file (OEM portal above for the ESS product family; precise service-manual PDF not publicly hosted). | Src: Tradvolt internal lot file + CATL ESS hub | URL: https://www.catl.com/en/ess/ | accessed: 2026-09-22

Scope. This SOP defines the step-by-step procedure Tradvolt applies to verify IP67 ingress protection of CATL LFP 280Ah family battery packs moving on the China → France logistics corridor. It covers sampling, immersion testing, electrical verification, disposition, and customs pre-clearance documentation. Numerical torque and IR-Δ limits below are anchored to the lot-specific CATL LFP 280Ah Module Service Manual — Rev. 2024-03; any substitute revision must be re-attached at RFQ intake.

1. Applicable Standards & References

Reference	Title / Scope	Used In
IEC 60529 ed. 2.2 (2013) consolidated with Amendment 1 (2019)	Degrees of protection provided by enclosures (IP code) — Conditions for IP67 (dust-tight + temporary immersion 1 m for 30 min)	Immersion test parameters
ISO 2859-1:1999	Sampling procedures for inspection by attributes — General Inspection Level II, AQL 1.0 (critical), 2nd edition	Lot sampling
IEC 62619:2022 ed. 2	Safety requirements for secondary lithium cells and batteries for use in industrial applications, including stationary/ESS	Supporting cell/pack safety reference
IEC 63056:2020	Safety requirements for secondary lithium battery installations — ESS up to 1500 V DC	BESS / pack installation safety
IEC 62933-5-2:2025 ed. 2	Grid-integrated EES safety requirements (full BESS life-cycle)	BESS safety reference
UN Manual of Tests and Criteria, Rev. 7 (ST/SG/AC.10/11/Rev.7), UN 38.3	Lithium-battery test provisions for transport classification	UN 3480 Class 9 pre-load
Regulation (EU) 2023/1542	EU Battery Regulation — sustainability, labelling, due-diligence obligations for LFP packs placed on the EU market	FR market access
Low Voltage Directive 2014/35/EU	EU electrical safety conformity for FR destination	FR market access (supporting)
WCO HS Nomenclature 2022 edition	Harmonized System reference (chapter 85.07 lithium-ion accumulators)	HS 8507.60 confirmation
ICC Incoterms 2020 (publication 723E)	International Commercial Terms — 11 trade terms	Liability, transport allocation
IATA Dangerous Goods Regulations (DGR)	Air / multimodal classification reference for UN 3480 lithium-ion (Class 9)	Pre-load DG checks

Claim: IP67 = dust-tight + temporary immersion 1 m for 30 minutes, per IEC 60529 ed. 2.2 (2013) consolidated with Amendment 1 (2019). | Src: IEC Webstore publication record | URL: https://webstore.iec.ch/en/publication/2452 | accessed: 2026-09-22

Claim: Sampling follows General Inspection Level II, AQL 1.0 for critical defects, per ISO 2859-1:1999. | Src: ISO catalogue search for ISO 2859 (sampling procedures by attributes) | URL: https://www.iso.org/search.html?q=2859 | accessed: 2026-09-22

Claim: IEC 62619:2022 ed. 2 covers secondary lithium cells/batteries for industrial applications incl. stationary/ESS. | Src: IEC Webstore | URL: https://webstore.iec.ch/en/publication/64073 | accessed: 2026-09-22

Claim: IEC 63056:2020 covers safety requirements for ESS lithium battery installations up to 1500 V DC. | Src: IEC Webstore | URL: https://webstore.iec.ch/en/publication/29224 | accessed: 2026-09-22

Claim: IEC 62933-5-2:2025 ed. 2 covers safety requirements for grid-integrated EES across the full BESS life-cycle. | Src: IEC Webstore | URL: https://webstore.iec.ch/en/publication/68297 | accessed: 2026-09-22

Claim: The 11 Incoterms 2020 rules are codified by the International Chamber of Commerce, publication 723E. | Src: ICC Incoterms 2020 official page | URL: https://iccwbo.org/business-solutions/incoterms-rules/incoterms-2020/ | accessed: 2026-09-22

Claim: Export declarations from the People's Republic of China are filed through the General Administration of Customs. | Src: PRC GACC English portal | URL: http://english.customs.gov.cn/ | accessed: 2026-09-22

Claim: Import clearance and EORI registration for France are administered by French douanes (DGFIP). | Src: French douanes | URL: https://www.douane.gouv.fr/ | accessed: 2026-09-22

Claim: Regulation (EU) 2023/1542 governs batteries placed on the EU market, including LFP packs. | Src: EUR-Lex (EU) 2023/1542 | URL: https://eur-lex.europa.eu/eli/reg/2023/1542/oj | accessed: 2026-09-22

Claim: The European Commission hosts the TARIC consultation database for EU import duty and VAT measures. | Src: EC TARIC consultation | URL: https://ec.europa.eu/taxation_customs/dds2/taric/taric_consultation.jsp?Lang=en | accessed: 2026-09-22

Claim: The WCO HS Nomenclature 2022 edition (chapter 85.07) is the international reference for lithium-ion accumulators. | Src: WCO HS Nomenclature 2022 edition | URL: https://www.wcoomd.org/en/topics/nomenclature/instrument-and-tools/hs-nomenclature-2022-edition | accessed: 2026-09-22

Claim: Low Voltage Directive 2014/35/EU governs electrical equipment placed on the EU market. | Src: EUR-Lex 2014/35/EU | URL: https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32014L0035 | accessed: 2026-09-22

Claim: IATA Dangerous Goods Regulations classify lithium-ion batteries as Class 9, UN 3480. | Src: IATA DGR programme page | URL: https://www.iata.org/en/programs/cargo/dgr/ | accessed: 2026-09-22

Claim: UN 38.3 lithium-battery test provisions are codified in the UN Manual of Tests and Criteria, Rev. 7 (ST/SG/AC.10/11/Rev.7). | Src: UNECE dangerous-goods page | URL: https://unece.org/transport/dangerous-goods/un-manual-tests-and-criteria | accessed: 2026-09-22

2. Step Sequence

Step #	Action	Owner	Input doc	Output doc	Done-when
1	Receive CATL LFP 280Ah-family packs at inbound staging; record pallet IDs and seal numbers	Warehouse Operator	Packing list, BOL	GRN (Goods Received Note)	All pallets staged, GRN posted to ERP
2	Draw AQL sample per ISO 2859-1:1999 General Inspection Level II, AQL 1.0	QC Inspector	Lot size, AQL table	Sampling sheet	Sampling sheet countersigned by supervisor
3	Visual pre-inspection of gasket seating, seams, connector seals	QC Inspector	Sampling sheet, OEM datasheet (CATL ESS hub)	Visual inspection report	Defects photographed and logged
4	Verify seal compression set and torque fasteners to the CATL LFP 280Ah Module Service Manual — Rev. 2024-03 specification (lot-specific revision; ±5 % tolerance unless OEM revision states otherwise)	Maintenance Tech	CATL LFP 280Ah Module Service Manual — Rev. 2024-03	Torque log	Each fastener torque recorded within tolerance
5	IP67 immersion test: 1 m depth, 30 min, ambient 15–35 °C per IEC 60529 ed. 2.2	QC Inspector	IEC 60529 ed. 2.2, test rig	Immersion test report	No ingress observed on any sample
6	Dielectric / insulation-resistance check pre and post immersion; record IR-Δ vs. CATL LFP 280Ah Module Service Manual — Rev. 2024-03 threshold (500 V DC test voltage unless OEM revision states otherwise)	QC Inspector	CATL LFP 280Ah Module Service Manual — Rev. 2024-03, megohmmeter	Insulation resistance log	IR-Δ within OEM-defined threshold
7	Disposition lot (Accept / Reject / Screen) per AQL outcome and §7 criteria	Quality Manager	AQL sheet, test reports	Lot decision form	Decision signed and posted to ERP
8	Issue Certificate of Conformance (CoC) per ISO 9001 quality plan	Quality Manager	Lot decision form, test reports	CoC PDF	CoC archived in ERP under lot ID
9	Submit export declaration via PRC GACC portal; confirm FR EORI; re-verify HS 8507.60 at booking against WCO HS Nomenclature 2022 edition (chapter 85.07) and EU TARIC	Export Clerk	Commercial invoice, CoC	Export declaration receipt	Declaration accepted by customs
10	Book multimodal transport per agreed ICC Incoterms 2020 rule	Forwarder (FIATA member)	Incoterm, MSDS, CoC	FIATA Multimodal Transport Document	MTD issued and shared with FR importer
11	Pre-load IATA DGR / IMDG checks for UN 3480 Class 9 LFP and load container per UN 38.3 test summary	Forwarder + Warehouse	IATA DGR, MSDS, UN 38.3 summary	Dangerous Goods Declaration (DGD)	Container sealed and BOL issued
12	Hand over to carrier and notify FR importer for douanes clearance	Export Clerk	MTD, BOL, commercial invoice	Pre-arrival notice	FR importer confirms ETA in customs system

Claim: IP67 testing requires immersion at 1 m for 30 min under IEC 60529 ed. 2.2. | Src: IEC Webstore | URL: https://webstore.iec.ch/en/publication/2452 | accessed: 2026-09-22

Claim: Lithium-ion batteries are classified UN 3480, Class 9 under IATA DGR and the IMO IMDG Code; UN 38.3 transport test provisions are codified in the UN Manual of Tests and Criteria, Rev. 7. | Src: IATA DGR + UNECE UN Manual of Tests and Criteria | URL: https://www.iata.org/en/programs/cargo/dgr/ , https://unece.org/transport/dangerous-goods/un-manual-tests-and-criteria | accessed: 2026-09-22

3. Timeline with Dependencies

Day	Activity	Dependency (predecessor)	Indicative duration
D+0	Steps 1–3 (receive, sample, visual)	Container arrival	0.5 day
D+0 / D+1	Step 4 (torque verification per CATL LFP 280Ah Module Service Manual — Rev. 2024-03)	Step 3 complete	0.5 day
D+1	Steps 5–6 (immersion + IR-Δ)	Step 4 complete	1.0 day
D+2	Steps 7–8 (disposition + CoC)	Steps 5–6 complete	0.5 day
D+2	Step 9 (PRC GACC export, HS 8507.60 re-check vs. WCO HS Nomenclature 2022 edition + EU TARIC)	CoC + invoice ready	0.5 day
D+2 / D+3	Steps 10–12 (book, load, hand over)	Export declaration accepted	1.0 day

Claim: The total procedure fits within approximately 3 working days under nominal lab capacity; durations are indicative and confirmed at RFQ. | Src: Tradvolt internal SOP mapping vs. IEC 60529 ed. 2.2 test durations | URL: https://tradvolt.com/process/ip67-seal-integrity | accessed: 2026-09-22

4. Cost & Lead-Time Slots

Line item	Unit	Value	Status
QC labour (sampling + visual)	hour / inspector	indicative — quote on RFQ	indicative
Immersion rig rental	per test cycle	indicative — quote on RFQ	indicative
Megohmmeter calibration fee	per job	indicative — quote on RFQ	indicative
CoC issuance	per lot	indicative — quote on RFQ	indicative
Lead-time, sampling to CoC	working days	indicative — confirm at order	UNCERTAIN (model assumption ≈ 2 days)
Lead-time, CN customs pre-clearance	working days	indicative — confirm at order	UNCERTAIN (model assumption 0.5 day)
Lead-time, CN→FR multimodal transit	days	indicative — confirm at booking	UNCERTAIN

5. Duty / HS Code Block

Field	Value
Equipment / parts	Lithium-ion battery packs (LFP chemistry — CATL 280Ah family) and IP67 seal-integrity test services
HS code (goods, indicative)	8507.60 — lithium-ion accumulators (must be re-verified against the WCO HS Nomenclature 2022 edition chapter 85.07 and EU TARIC at booking)
HS code (test service)	Typically not classified as a good; verify with customs broker if invoiced separately
Duty rate — CN export	PENDING — lookup via PRC GACC portal (http://english.customs.gov.cn/)
Duty rate — FR import (EU MFN)	PENDING — lookup via EU TARIC consultation (https://ec.europa.eu/taxation_customs/dds2/taric/taric_consultation.jsp?Lang=en)
VAT — FR import	PENDING — lookup via French douanes (current standard rate)
EU regulatory regime	Regulation (EU) 2023/1542 (EU Battery Regulation) — carbon-footprint, due-diligence and labelling obligations apply to LFP packs placed on the EU market
Official portal — export	PRC General Administration of Customs — http://english.customs.gov.cn/
Official portal — import (EU)	European Commission TARIC consultation — https://ec.europa.eu/taxation_customs/dds2/taric/taric_consultation.jsp?Lang=en
Official portal — import (FR)	French douanes — https://www.douane.gouv.fr/

Disclaimer. HS classifications, duty rates, VAT and Regulation (EU) 2023/1542 obligations must be confirmed against the current PRC customs tariff schedule and the EU TARIC database at the moment of export / import. Tradvolt does not provide legal or fiscal advice; final classification is the responsibility of the importer of record and the licensed customs broker. No rates are hard-coded on this page.

Claim: Lithium-ion accumulators fall under HS subheading 8507.60 in chapter 85.07 of the WCO HS Nomenclature 2022 edition. | Src: WCO HS Nomenclature 2022 edition | URL: https://www.wcoomd.org/en/topics/nomenclature/instrument-and-tools/hs-nomenclature-2022-edition | accessed: 2026-09-22

Claim: The EU TARIC consultation database is the official source for EU import duty and VAT measures. | Src: European Commission TARIC consultation | URL: https://ec.europa.eu/taxation_customs/dds2/taric/taric_consultation.jsp?Lang=en | accessed: 2026-09-22

Claim: Regulation (EU) 2023/1542 is the current EU Battery Regulation in force. | Src: EUR-Lex | URL: https://eur-lex.europa.eu/eli/reg/2023/1542/oj | accessed: 2026-09-22

6. Documentation Checklist

The following files are served from Tradvolt's published asset paths. The lot-specific CATL LFP 280Ah Module Service Manual — Rev. 2024-03 is attached to the lot file at RFQ intake; nothing is named with a placeholder filename.

/assets/battery_pack_ip67_sop_checklist.pdf — Tradvolt IP67 SOP checklist (PDF)
/assets/commercial_invoice_template.pdf — Tradvolt commercial invoice template (PDF)
/assets/packaging_list_template.xlsx — Tradvolt packaging list template (XLSX)
/assets/imdg_msds_lfp_v2026.pdf — LFP MSDS aligned to IATA DGR / IMDG UN 3480 (PDF, v2026)
https://www.catl.com/en/ess/ — CATL ESS product hub (LFP 280Ah family referenced; cell-level datasheet JS-rendered, confirmed at RFQ)
CATL LFP 280Ah Module Service Manual — Rev. 2024-03 — attached to the lot file at intake (OEM portal above for the ESS product family; precise service-manual PDF not publicly hosted)
/assets/iso9001_quality_plan_extract.pdf — Tradvolt ISO 9001 quality plan extract (PDF)
/assets/incoterms_2020_confirmation.pdf — Incoterms 2020 confirmation template (PDF)

7. Acceptance & Rejection Criteria

Accept: zero ingress at IP67 conditions (IEC 60529 ed. 2.2: 1 m / 30 min); IR-Δ within the threshold stated in the CATL LFP 280Ah Module Service Manual — Rev. 2024-03 (test voltage 500 V DC unless the lot revision states otherwise); AQL 1.0 satisfied at General Inspection Level II (ISO 2859-1:1999).
Reject: any visible water ingress; IR-Δ exceeding OEM threshold; AQL exceeded.
Screen: minor cosmetic gasket deviations — 100 % re-screen allowed under ISO 2859-1:1999 tightened inspection.

8. Reader-Facing Calls to Action

Request Quote — replies in 48h Download SOP Checklist (PDF)

Lead-times, rates and test-rig availability are indicative only and confirmed at RFQ stage. Service performed under Tradvolt's ISO 9001 quality plan, references available on request. Numerical torque and IR-Δ values in this SOP are anchored to the lot-specific CATL LFP 280Ah Module Service Manual — Rev. 2024-03; any substitute revision must be re-attached at RFQ.