# Battery passport for stationary storage and BESS > Home, commercial and grid storage over 2 kWh needs a battery passport per battery from 18 February 2027. What applies and how BatteryPass helps. Stationary storage and BESS # A passport per storage battery, without maintaining every unit by hand Stationary battery energy storage systems are industrial batteries under the Battery Regulation. From 18 February 2027 every such battery over 2 kWh that is placed on the market or put into service needs its own battery passport. BatteryPass keeps model data once per version and unit data per serial number. [Request a demo](https://kabin.sh/en/contact) [Example passport of a storage battery](https://kabin.sh/en/example-passport) What applies ## What the Battery Regulation requires for stationary storage In short, with the articles to read up on. The full picture with every source is in our article. ### One passport per battery From 18 February 2027 every industrial battery with a capacity of more than 2 kWh needs an electronic battery passport that is reachable through a QR code (Art. 77). It holds model data and information on the individual battery, including from its use. ### Performance and durability For rechargeable industrial batteries over 2 kWh a document with the performance and durability values of Annex IV is already required (Art. 10). These values also belong in the passport. ### Data from the BMS The battery management system of a stationary storage system has to hold up-to-date data for the state of health and expected lifetime under Annex VII (Art. 14). ### Access tiers Part of the information is public, part is meant only for persons with a legitimate interest and for authorities (Art. 77(2), Annex XIII). More on this: [Battery passport for stationary storage: what applies from 18 February 2027](https://kabin.sh/en/blog/battery-passport-stationary-storage). Data fields ## Public performance data of a storage battery An extract from our field registry: the public fields on performance and durability for the stationary storage category, with requirement status and legal basis. | Data field | Requirement | Legal basis | | -------------------------------------------- | ----------- | -------------------------------------------- | | Rated capacity (Ah) | required | Annex XIII 1(a), 1(g); Annex VI Part A(6) | | Rated energy (Wh) | optional | | | Nominal voltage (V) | required | Annex XIII 1(h) | | Minimum voltage (V) | required | Annex XIII 1(h) | | Maximum voltage (V) | required | Annex XIII 1(h) | | Temperature range of the voltage values | optional | Annex XIII 1(h) | | Rated maximum power (W) | required | Annex XIII 1(i) | | Temperature range of the power limits | optional | Annex XIII 1(i) | | Original power capability at 80 % / 20 % SoC | required | Annex XIII 1(i); Annex IV Part B(4) | | Ratio of nominal power to energy (W/Wh) | optional | Annex IV Part B(2) (technical documentation) | Data fields from field registry 0.5.0 · 10 more fields With BatteryPass ## How BatteryPass helps with storage batteries ### Model version instead of unit-by-unit Cell chemistry, performance data, declaration of conformity and end-of-life information are maintained once per model version. Units inherit them and carry only serial number, manufacturing date and condition. ### Condition data in operation Service partners report by link, your control room through the API. The passport is re-published at once or daily, and every version stays retrievable by date. ### Second life When a storage battery is repurposed or remanufactured, it gets a new passport that links to the original one. ## Frequently asked questions about stationary storage ### Does a home storage battery need a battery passport? Yes, if it has a capacity of more than 2 kWh and is placed on the market or put into service from 18 February 2027. Exactly 2 kWh is not covered. Details in the [article on stationary storage](https://kabin.sh/en/blog/battery-passport-stationary-storage). ### One passport per container or per module? The passport belongs to every battery placed on the market. If you sell a container as one battery, you have one passport per container; modules or racks sold separately each need one. BatteryPass handles both; record your decision. ### Where does the condition data come from? From the battery management system, through service partners or your own control room. BatteryPass accepts it by link or through the API with a condition data key and re-publishes the passport at once or daily. ## Sources 1. [Regulation (EU) 2023/1542, Article 77: Battery passport](https://eur-lex.europa.eu/eli/reg/2023/1542/oj/eng#art_77) · Publications Office of the European Union (EUR-Lex) · accessed 25 October 2026 2. [Regulation (EU) 2023/1542, Article 10: Performance and durability](https://eur-lex.europa.eu/eli/reg/2023/1542/oj/eng#art_10) · Publications Office of the European Union (EUR-Lex) · accessed 25 October 2026 3. [Regulation (EU) 2023/1542, Article 14: State of health and expected lifetime](https://eur-lex.europa.eu/eli/reg/2023/1542/oj/eng#art_14) · Publications Office of the European Union (EUR-Lex) · accessed 25 October 2026 4. [Regulation (EU) 2023/1542, Annex XIII: Information in the battery passport](https://eur-lex.europa.eu/eli/reg/2023/1542/oj/eng#anx_XIII) · Publications Office of the European Union (EUR-Lex) · accessed 25 October 2026 Your data, a reviewed battery passport In 30 minutes we show you how your existing spreadsheets, supplier data and serial numbers become a maintained battery passport. [Request a demo](https://kabin.sh/en/contact)[See an example passport](https://kabin.sh/en/example-passport)