# Batteries for emergency lights > High-temp Ni-Cd and Ni-MH batteries for Daisalux, Legrand, Schneider, Sagelux, Hispania emergency lights. AA, C, D, sub-C. EN 60598-2-22. **Category:** [Start](https://baterias.com/gb/beginning) → [Batteries](https://baterias.com/gb/batteries) → [Stationary Batteries](https://baterias.com/gb/stationary-batteries) - **Canonical URL**: https://baterias.com/gb/batteries-for-emergency-lights - **Language**: en-GB ## Description **Emergency lighting batteries** compliant with **EN 60598-2-22** and **EN 50171**: self-contained and centralised units from **Daisalux**, **Legrand**, **Schneider Electric**, **Sagelux**, **Hispania**, **Olfer**, **Normalux**, **Ova**. Because lights operate next to a hot LED or fluorescent module, the required chemistry is **high-temperature Ni-Cd (HT)** with 7-10 year life, or **Ni-MH HT** for modern replacements. 1.2-4.5 Ah cells in AA, C, D, sub-C, packed as 3-6 cells in series (3.6-7.2 V). ## How to choose the right emergency lighting battery Three must-knows: **cell format** (AA / C / D / sub-C), **pack composition** (3 or 4 cells in series with specific cable and connector) and **minimum capacity** in mAh from the original pack. HT (high temperature) chemistry is **mandatory** in modern luminaires — a standard cell fails within 1-2 years due to thermal electrolyte degradation. ### Common formats Format Cell voltage Typical capacity Application AA Ni-Cd HT 1.2 V 700-900 mAh Small LED luminaire Sub-C Ni-Cd HT 1.2 V 1,200-2,000 mAh Standard 1-2 h luminaire C Ni-Cd HT 1.2 V 1,800-2,500 mAh Medium 1-3 h luminaire D Ni-Cd HT 1.2 V 4,000-4,500 mAh Large 3 h+ luminaire ### Identify your pack The original pack or fitting label reads something like "**3×AA HT 700 mAh**" or "**4SC 1800 mAh**". With that reference plus the luminaire brand (Daisalux Hydra, Legrand U21/U34, Schneider Exiway) we find exact compatibility. ### Frequently asked questions ### **How often to replace emergency light batteries?** Every 4-5 years in normal use, per manufacturer certification. Regulations require periodic autonomy testing. ### **Can I switch Ni-Cd for Ni-MH?** Yes, keeping the same voltage and minimum capacity. Ni-MH HT delivers more mAh per cell and contains no cadmium — verify the luminaire's electronic charger is Ni-MH compatible. ### **How long does shipping take?** Standard delivery **1 to 5 working days** to your country. We process orders within 24h. Catalogue curated by our technical team. **10,941 Trustpilot reviews · 4.4/5**. 24h delivery, free 14-day returns. ## Products in this category | Product | Brand | Price | |---|---|---| | [12V 7A AGM battery](https://baterias.com/gb/battery-12v-7ah-agm) | KRONOBAT | 18,92 € | | [Ritar RT1270 stationary UPS battery 12V 7Ah AGM](https://baterias.com/gb/battery-ritar-rt1270-12v-7ah) | RITAR | 33,47 € | | [Ritar RT1245 stationary UPS battery 12V 4Ah AGM](https://baterias.com/gb/battery-ritar-rt1245-12v-4-5ah-rt-agm) | RITAR | 30,65 € | | [Ritar RT670 stationary UPS battery 6V 7Ah AGM](https://baterias.com/gb/battery-ritar-rt670-6v-7ah-rt-agm) | RITAR | 20,96 € | | [Ritar RT1272 stationary UPS battery 12V 7Ah AGM](https://baterias.com/gb/battery-ritar-rt1272-12v-7-2ah-rt-agm) | RITAR | 37,11 € | | [Ritar RT1223 stationary UPS battery 12V 2Ah AGM](https://baterias.com/gb/battery-ritar-rt1223-12v-2-3ah-rt-agm) | RITAR | 35,00 € | | [Ritar RT12280S stationary UPS battery 12V 28Ah AGM](https://baterias.com/gb/battery-ritar-rt12280s-12v-28ah) | RITAR | 96,82 € | | [Ritar RT12120 stationary UPS battery 12V 12Ah AGM](https://baterias.com/gb/battery-ritar-rt12120-12v-12ah-rt-agm) | RITAR | 65,49 € | | [Ritar RT1250 stationary UPS battery 12V 5Ah AGM](https://baterias.com/gb/battery-ritar-rt1250-12v-5ah) | RITAR | 38,93 € | | [Ritar RT1213 stationary UPS battery 12V 1Ah AGM](https://baterias.com/gb/battery-ritar-rt1213-12v-1-3ah-rt-agm) | RITAR | 24,31 € | | [Ritar RT1290 stationary UPS battery 12V 9Ah AGM](https://baterias.com/gb/battery-ritar-rt1290-12v-9ah-rt-agm) | RITAR | 44,62 € | | [Ritar RT1232 stationary UPS battery 12V 3Ah AGM](https://baterias.com/gb/battery-ritar-rt1232-12v-3-2ah-rt-agm) | RITAR | 35,57 € | | [Ritar RT12180 stationary UPS battery 12V 18Ah AGM](https://baterias.com/gb/battery-ritar-rt12180-12v-18ah-rt-agm) | RITAR | 63,36 € | | [Ritar RT645 stationary UPS battery 6V 4Ah AGM](https://baterias.com/gb/battery-ritar-rt645-6v-4-5ah-rt-agm) | RITAR | 33,55 € | | [12V 9A AGM Battery](https://baterias.com/gb/battery-12v-9ah-agm) | KRONOBAT | 25,56 € | ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — over 25 years of experience validating automotive batteries. → https://baterias.com/gb/technical-team --- *baterias.com — Automotive batteries · 2026-08-01*