The Fire Industry Association (FIA), the UK’s leading trade association for the fire protection sector, has published new guidance to improve the testing of lead-acid batteries used in fire detection and alarm system power supplies.
The detailed guidance note addresses a key concern for system integrity: the reliability of secondary (backup) power supplies in the event of a mains power failure. Aimed at system designers, installers and maintainers, the document evaluates the most commonly used testing methods and offers practical recommendations based on current industry capabilities and standards.
With increasing scrutiny of life safety systems and their maintenance, the FIA’s latest document clarifies how to assess the true capacity of standby batteries without compromising system performance or safety during testing.
Key insights from the guidance include:
- Momentary or pulse load testing is currently the best field method available, offering a practical balance between accuracy, safety and test time.
- Common test methods such as full-load and reduced-load testing, while accurate, are difficult to perform on site due to safety risks, time constraints and the need for post-test battery recharging.
- Voltage readings and electrolyte analysis are insufficient as standalone indicators of battery health.
- Inadequate or inconsistent testing can lead to both false positives and false negatives, with significant safety and financial implications.
- Any battery test method should be supported by calibrated equipment and consistent implementation across the industry.
The document aligns with the requirements of BS 5839-1:2013 and other related standards, reinforcing the need for regular and appropriate testing of batteries during periodic system maintenance.
“This guidance was created in response to the growing need for accurate, practical and repeatable battery testing in the field,” said a spokesperson from the FIA. “Reliable secondary power is vital to fire alarm system performance, and poor battery testing can result in either unnecessary cost or critical safety risk. This guidance gives professionals a clear, effective path forward.”
The guidance is available now and is intended for all professionals involved in the servicing and maintenance of fire alarm systems, particularly those covered by EN 54 Part 4 and related compliance frameworks.
To download the guidance, visit: www.fia.uk.com
Contact:
Fire Industry Association
Tudor House, Kingsway Business Park
Oldfield Road, Hampton, Middlesex TW12 2HD
Tel: +44 (0)20 3166 5002
Email: info@fia.uk.com
