A lead-acid battery is a rechargeable battery that uses lead-based electrodes and a sulfuric-acid electrolyte to store and deliver electrical energy. It is a long-established chemistry commonly used in vehicle starting systems, industrial equipment, and backup power.
Temperature affects the electrolyte and the battery’s ability to deliver power: cold can reduce available performance, while excessive heat can accelerate degradation. In cyber-physical systems, backup batteries may keep network equipment, sensors, or control systems running during power loss, so operators should follow specified temperature limits, monitor battery condition, and test backup capacity. The chemistry alone does not establish performance in extreme conditions; that requires validated specifications and testing.