What are the key specifications to consider when selecting a 6 volt lead acid battery for a specific application?

When selecting a 6 volt lead acid battery for a specific application, key specifications to consider include capacity (measured in ampere-hours), voltage, size and weight, cycle life, charging requirements, and compatibility with the application's power needs. It is important to choose a battery that meets the power and energy requirements of the application while also considering factors such as durability and maintenance needs.