Why are stationary lead-acid batteries useful for emergency power systems?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Cross-section diagram of an alkaline-manganese dioxide battery showing labeled internal components, including the steel-plated covers, cathode, anode gel, current collector, separator, steel can, and brass rivet. — battery Cutaway view of an alkaline–manganese dioxide power cell.

Stationary lead-acid batteries are highly effective for emergency power systems due to their specific design and performance characteristics. Unlike portable batteries, stationary versions are built with heavier grid structures and specialized features that provide a long shelf life, ensuring they remain reliable for critical applications like emergency lighting and uninterruptible power systems in hospitals, factories, and telephone exchanges.1

Their utility is further supported by several key advantages:
* Reliability and Performance: They offer a wide capability range for both high and low current demands across typical ambient temperatures and demonstrate high reliability over hundreds of cycles.1
* Cost-Effectiveness: Lead is relatively inexpensive compared to other battery materials like nickel, cadmium, or lithium.1
* High Voltage: Each cell provides a high voltage of 2.1 volts.1
* Sustainability: These batteries feature a high degree of salvageability, as their components can be easily recycled at low melting temperatures.1

Beyond emergency power, these features also make them suitable for storing energy generated by solar cells.1