Progetto di norma estintori portatili per incendi di batterie agli ioni di litio / Publication Date 01-Mar-2027

Progetto di norma EN 3-11
estintori portatili per incendi di batterie agli ioni di litio 

ID 25401 | 26.01.2026 / In allegato Preview - Publication Date 01-Mar-2027

Progetto di norma estintori portatili per incendi di batterie agli ioni di litio

prEN 3-11:2025-02 - Draft
Portable fire extinguishers - Part 11: Performance, requirements, test method and marking for EN 3-7 extinguishers suitable to be used on lithium-ion battery fires

This document describes performance requirements for portable fire extinguishers in addition to the requirements of EN 3-7+A1:2007, to demonstrate their suitability for extinguishing fires in rechargeable and non-rechargeable batteries based on lithium ion chemistry with a limited capacity, as used in:

- portable electronic equipment (smartphones, laptops);
- power tools and domestic appliances;
- portable medical equipment;
- toys and radio-controlled objects;
- drones;
- bicycles.

This document contains general requirements and procedures for extinguishing tests. The size of the extinguishing tests is comparable to the battery capacities in the abovementioned applications. Suitability for extinguishing larger fire risks, such as vehicle batteries and battery sets of stationary energy storage systems, cannot be validated with this document.
___________

Status Not Published
Publication Date 01-Mar-2027

Overview

prEN 3-11 (Draft 2025) is a CEN technical specification that extends EN 3-7 requirements for portable fire extinguishers to demonstrate suitability for lithium‑ion battery fires. It specifies performance, test methods, product documentation and marking for EN 3-7 extinguishers intended to extinguish fires in small lithium‑ion battery packs used in portable electronics, power tools, medical devices, drones, bicycles and similar applications. The document covers extinguishing tests scaled to typical portable battery capacities and explicitly excludes validation for large risks such as vehicle traction batteries or stationary energy storage systems.

Key topics and requirements

Scope: suitability for rechargeable and non‑rechargeable lithium‑ion batteries (limited capacity) in listed portable applications.

Normative reference: EN 3-7:2004+A1:2007 remains a baseline; prEN 3-11 adds lithium‑specific requirements.

Test protocol:

- Uses new NMC pouch cells arranged in test rigs (e.g., six sets of four cells for the 600 Wh setup).
- Cells charged ≥24 h before test and verified ≥4.1 V immediately prior.
- Ignition by controlled overcharging (target ignition 7-9 minutes after start).
- Series: free burn and extinguishing tests per Annex A; success criteria per Annex A requirements.

Fire rating and agent limits:

- Fire rating indicated as nominal capacity in Wh (example: 600 Wh rating).
- Maximum extinguishing agent quantity specified (e.g., 600 Wh → 9 L).

Product documentation:

- Complete product file required before testing: technical datasheets, parts/assembly drawings, extinguishing agent analysis and safety data sheet.

Marking and pictogram:

- If compliant, extinguisher must bear a rectangular marking with a battery icon (min 10 × 15 mm), the letters “Li”, the demonstrated Wh rating, reference “EN 3-11:2025”, test/certification reference.
- Minimum overall marking 30 × 50 mm, frame line width ≥0.35 mm, sans‑serif font, good contrast.
- Safety guidance: tests and real incidents release toxic combustion products; recommend ventilation, PPE (breathing protection), cool burnt batteries under water for 48 h and isolate damaged batteries.

Applications

Demonstrates extinguisher suitability for fires in:

- Smartphones, laptops, tablets
- Power tools, domestic appliances
- Portable medical equipment
- Toys, radio‑controlled objects, drones
- E‑bikes and similar small battery systems

Not applicable for vehicle traction batteries or large stationary energy storage systems.

Who uses this standard

- Portable fire extinguisher manufacturers seeking certification for lithium‑ion fire performance
- Test laboratories and certification bodies performing EN 3‑11 tests
- Procurement officers and facilities managers specifying extinguishers for electronic/device risks
- Fire safety engineers and occupational safety professionals developing response plans for lithium‑ion battery incidents

[...]




Info / download

Collegati
Prevenzione Incendi
ISO 3941:2026 - Classification of fires