# Blog: Guide

> Step by step from the data you have to a maintained battery passport.

Step by step from the data you have to a maintained battery passport.

- [GuideFrom Excel and ERP exports to a reviewed battery passportHow existing spreadsheets, ERP exports and supplier data become a reviewed battery passport: data sources, import, approval, provenance and ERP connection.25 October 2026](https://kabin.sh/en/blog/excel-erp-exports-to-battery-passport)
- [GuideModule, pack or container: what counts as one battery for the passportCell, module, pack or container: what the Regulation and the Commission treat as one battery, and how to record your classification.25 October 2026](https://kabin.sh/en/blog/module-pack-or-container-battery-passport)
- [GuideSupplier data for the battery passport without supplier accountsWhich passport data comes from cell and module suppliers, what Article 39 requires, and how to request, review and protect missing data through a link.25 October 2026](https://kabin.sh/en/blog/supplier-data-battery-passport-without-supplier-accounts)