Five Years of Customs Records for Every Battery Pack You Import
What US importers of lithium-ion battery packs must keep after entry, how long, and what to produce when CBP sends a request for information.
Certification & Regulatory Compliance
Determine which safety and transport certifications each target market requires and how to keep the evidence current.
Can Your UN 38.3 Test Report Prove Which Cell Lot Shipped in Your Battery Pack?
A UN 38.3 test report covers a cell model, not a shipment. How cell lot codes, work orders, and pack serials hold the compliance evidence chain together.
The certificate-filing habit that quietly fails after your first pack change
Filing certificates by document type breaks at the first pack revision change. How to run compliance evidence as a versioned, indexed, retained document set.
What UN 38.3 and UL Reviewers Expect From Your Cell Lot Records
A UN 38.3 test summary and a UL file are only pointers. Here's the three-record bundle reviewers actually pull: pack serial, cell lot code, end-of-line data.
What Certification Evidence Should Be in a Custom Battery Pack File?
A custom battery pack file needs six evidence types tied to the exact part number, cell model, BMS revision, and site — plus a register that stays current.
Your supplier's certificate may not actually cover your pack
How to verify a supplier's compliance packet against the pack you're actually buying: part number, configuration, issue date, and lab accreditation scope.