Key Features
- Continuous operation during battery replacement
- Compatible with Li-ion 18650 rechargeable batteries
- Stable 7.4V output
- IP20 enclosure protection
- Available in Black or White
Overview
The Ajax Internal Battery provides reliable backup power for the EN54 Fire Hub and ReX Jeweller, ensuring life safety systems remain fully active during power outages.
Fully compliant with fire safety standards, it is available in two versions providing either 24 or 72 hours of autonomous operation to guarantee uninterrupted protection.
Installation
Quick Setup
Easy Replacement
Installation is simple: the battery slides directly into the dedicated slot within the hub or range extender enclosure. With all mounting elements built in, you simply insert the module and lock it securely in place, no extra tools or wiring required.
To replace the battery, insert the special key into the hole at the bottom of the enclosure to unlock the tray. Pull the battery down to remove it, then slide the new one in until it clicks. The system stays active throughout the entire process.
Approvals
All batteries fully meet the EN54-4 safety standard.
Tech Specs
24h Battery Enclosure
| Battery | Rechargeable Li-ion battery |
| Nominal voltage | 7.4 V⎓ |
| Capacity | 5Ah |
| Maximum load current | 3.2A |
| End-of-life battery voltage | 6 V⎓ |
| Average power consumption with LTE only | 50mA/h |
| Average power consumption with Ethernet only | 120mA/h |
| Average power consumption with Wi-Fi only | 70mA/h |
| Average power consumption with Ethernet and Cellular (standby) | 102mA/h |
| Average power consumption with LTE, Wi-Fi, and Ethernet | 140mA/h |
| Dimensions ( W x H x D ) | 166mm × 87mm × 23mm |
| Weight | 270g |
| Operating temperature range | −10 °C to +40 °C |
| Operating humidity | 75% non-condensing |
| Protection class | IP20 |
| Colour | Black White |
| Complete set | EN54 Internal Battery (24h) |
| Revision | 2 |
Recommendations: Use the battery with compatible devices only.
The battery is designed for indoor use only.
72h Battery Enclosure
| Battery | Rechargeable Li-ion Battery |
| Nominal voltage | 7.4V⎓ |
| Capacity | 10Ah |
| Maximum load current | 3.2A |
| End-of-life battery voltage | 6V⎓ |
| Average power consumption with LTE only | 50mA/h |
| Average power consumption with Ethernet only | 120mA/h |
| Average power consumption with Wi-Fi only | 70mA/h |
| Average power consumption with Ethernet and Cellular (standby) | 102mA/h |
| Average power consumption with LTE, Wi-Fi, and Ethernet | 140mA/h |
| Dimensions ( W x H x D ) | 166mm × 87mm × 23mm |
| Weight | 443g |
| Operating temperature range | −10 °C to +40 °C |
| Operating humidity | 75% non-condensing |
| Protection class | IP20 |
| Colour | Black White |
| Complete set | EN54 Internal Battery (72h) |
| Revision | 2 |
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