Which type of wheelchair batteries typically has a capacity range of 30-90 ampere-hours at 12 volts?

The capacity range of 30-90 ampere-hours at 12 volts is characteristic of both wet-cell and gel batteries commonly used in wheelchairs. Wet-cell batteries, typically lead-acid batteries, are known for their high storage capacity and are widely used due to their cost-effectiveness and efficiency in providing power. They generally allow for a range of capacities that fit within the provided values.

Gel batteries, another type of lead-acid battery, are designed with a gel-like electrolyte that helps prevent spillage and evaporation. They also exhibit a similar capacity range and are valued for their ability to perform well in deep discharge applications while being safer than traditional wet-cell batteries.

Both battery types are effectively utilized in mobility devices such as wheelchairs to ensure adequate power supply, hence this question's answer reflects the fact that they can both meet the specified capacity range. Understanding the characteristics of these batteries helps practitioners select the right type based on user needs, mobility requirements, and safety considerations.