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EN54 Internal Battery (24h/72h).
Rechargeable Li-ion batteries to install into EN54 Fire Hub Jeweller or EN54 Fire ReX Jeweller
Standards and certifications
* Ajax shows these marks for the EN54 Internal Battery (24h/72h) range. Check the linked documentation for the exact version and market.
Keep the fire equipment powered.
EN54 Internal Battery (24h/72h) provides a rechargeable backup supply for EN54 Fire Hub and EN54 Fire ReX. Choose the 5 Ah or 10 Ah version for the required standby reserve. The removable pack fits the host’s dedicated compartment, supports hot swapping with main power available, and recharges through the host.
Key features. At a glance.
Hot-swappable batteries
without interrupting system operation
Battery type
Li-ion 18650
7.4 V
nominal voltage
Capacity
5 Ah for 24 hours of operation
10 Ah for 72 hours of operation
Recommended replacement interval
5 years
Two colors
to match the CIE and range extender
Overview of this product range. Features and ratings can differ by version. Ajax product information ↗ · EN54 Internal Battery (24h) specifications ↗
Choose the required standby reserve.
24h · 5 Ah
The 7.4 V rechargeable Li-ion pack provides up to 24 hours of backup operation for a compatible EN54 fire panel or range extender.
Four 18650 cells; 270 g. Standby duration depends on the host configuration, load and operating conditions.
For the panel and its range extender.
EN54 Fire Hub Jeweller
The pack fits the fire panel’s dedicated battery compartment and recharges while the panel has its main supply. Select the capacity required by the system’s standby design.
The battery is sold separately from the fire panel. This is not a generic battery for Residence or Superior hubs.
EN54 Fire ReX Jeweller
Use the same battery family in the compatible fire range extender. Plan backup power for each host, including every extender needed to keep the radio path working.
Host battery backup does not power separately supplied network equipment or third-party devices.
Fit and service it from the outside.
Insert into the dedicated slot
Slide the battery into the appropriate compartment until it locks in place. The mounting elements are part of the compatible host, so no separate bracket is needed.
Follow the host and battery manuals. The battery can be fitted while the host has its external power supply.
Check the reserve before it is needed.
Monitor charge and plan replacement
The installed host charges the pack from its main power supply. Check battery status and use the fire panel’s Power supply test during commissioning and servicing.
- Recommended replacement interval: five years for the battery pack.
- Indoor use: −10 to +40 °C, up to 75% non-condensing humidity, IP20.
- Recharge a low pack promptly. For storage, charge it and keep the temperature at or below +30 °C.
The replacement interval applies to the removable battery, not to the whole fire panel or range extender.
Find the right fire-panel battery.
Compare the 24h and 72h packs for EN54 and Type4 fire equipment. Check the exact host, standby conditions and servicing before choosing a battery.
Compare fire-panel batteries →Every detail, in one place.
Battery type
- Battery
- 4 × 18650 Rechargeable Li-ion battery.
- Nominal voltage
- 7.4 V⎓
- Capacity
- 5 Ah
Power supply
- Maximum load current
- 3.2 A
Power consumption
- Average power consumption with LTE only
- 50 mAh
- Average power consumption with Ethernet only
- 120 mAh
- Average power consumption with Wi-Fi only
- 70 mAh
- Average power consumption with Ethernet and Cellular (standby)
- 102 mAh
- Average power consumption with LTE, Wi-Fi, and Ethernet
- 140 mAh
Enclosure
- Dimensions
- 166 × 87 × 23 mm
- Weight
- 270 g
- Operating temperature range
- from −10 °C to +40 °C
- Operating humidity
- up to 75% non-condensing
- Protection class
- IP20
Revision
- Revision
- 2
What’s in the box
- EN54 Internal Battery (24h)
For your installation
- Selected as part of an installer-reviewed EN54 fire design.
- Use the battery with compatible devices only.
- The battery is designed for indoor use only.
- Recommended replacement interval: 5 years.
- Choose the exact version: sensing, power, casing, pack size or interface details can differ between the listed models.
Product documents.
Complete your installation.
EN54 Fire Hub Jeweller
Coordinate the devices, zones and designed fire response.
EN54 Fire ReX Jeweller
Survey the final radio link and provide the required backup supply.
EN54 FireProtect Jeweller detectors
Choose the required smoke or heat sensing for each protected location.