Types of batteries used in emergency lights

Emergency lights play a crucial role in providing illumination during power outages or emergency situations. The type of battery used in these lights is a critical factor in determining their reliability and performance. Australian standards, particularly AS/NZS 2293.3, outline specific requirements for the batteries used in emergency lighting systems to ensure their effectiveness in various applications.

Lead-Acid Batteries: One common type of battery used in emergency lights is the lead-acid battery. These batteries are known for their reliability and are widely used in exit signs and emergency lighting systems. AS/NZS 2293.3 provides guidelines on the specifications and maintenance of lead-acid batteries to ensure they meet the necessary safety standards.

Nickel-Cadmium (NiCd) Batteries: Nickel-Cadmium batteries are another popular choice for emergency lighting systems. These batteries are known for their long life and ability to provide a constant power supply during emergencies. AS/NZS 2293.3 details the requirements for the installation and testing of NiCd batteries to ensure their proper functioning when needed.

Nickel-Metal Hydride (NiMH) Batteries: NiMH batteries are gaining popularity in emergency lights due to their environmentally friendly composition. These batteries offer a higher energy density and are considered a more sustainable option. AS/NZS 2293.3 addresses the compatibility and standards for NiMH batteries in emergency lighting systems.

Lithium-Ion Batteries: With advancements in battery technology, lithium-ion batteries have become increasingly prevalent in emergency lighting applications. These batteries provide a high energy density, longer lifespan, and are relatively lightweight. AS/NZS 2293.3 provides guidelines on the safe use and integration of lithium-ion batteries in emergency lighting systems.

Sealed Lead-Acid (SLA) Batteries: Sealed Lead-Acid batteries are a variation of traditional lead-acid batteries but are designed to be maintenance-free. They are often used in emergency lighting due to their ease of use and reliability. AS/NZS 2293.3 outlines specific requirements for the installation and testing of SLA batteries to ensure their effectiveness.

Testing and Maintenance: In addition to specifying the types of batteries used, AS/NZS 2293.3 emphasizes the importance of regular testing and maintenance of emergency lighting systems. This includes testing the batteries for capacity, ensuring proper charging, and replacing batteries at the end of their service life to guarantee optimal performance.

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