Skip to content
Triumph Horizon
Log in
Batteries glossary

UL 9540A

A UL test method that measures how fire spreads from a cell in thermal runaway to modules, units and the installation. Its results set spacing and fire protection under NFPA 855.

Used in these articles

Related terms

Performance, safety and testing

Related coverage

Subscribers read the desk company and technology reports on the names it covers, including new reports before they are published on datadeep.tech.