The Ajax EN54 Internal Battery 72h is a rechargeable Li-ion backup battery designed to provide extended standby power for compatible Ajax EN54 fire system equipment.

Engineered specifically for use with the Ajax EN54 Fire Hub Jeweller and Fire ReX Jeweller, the battery delivers up to 72 hours of backup operation during mains power failure, helping maintain uninterrupted fire system performance in compliance with EN 54-4 requirements.

Ideal for critical fire safety applications, the battery offers a dependable and maintenance-free power solution while supporting compliant system operation when continuous protection is essential. Its compact internal form factor allows for a clean, integrated installation without additional external enclosures.

Supplied ready to use, the battery is designed for quick installation and straightforward replacement using dedicated tools, helping minimise downtime and simplify ongoing system maintenance.

• Rechargeable Li-ion internal backup battery

• 72-hour standby backup power

• Designed for Ajax EN54 fire systems

• Compatible with Ajax EN54 Fire Hub Jeweller

• Compatible with Ajax EN54 Fire ReX Jeweller

• EN 54-4 compliant backup solution

• Ready to use out of the box

• Maintenance-free design

• Quick installation

• Simple replacement using dedicated tools

• Compact internal form factor