There are two types of popular deep-cycle lead acid batteries that are used today: Wet-Cell and Sealed (AGM). Wet-cell batteries dominate the golf cart, utility vehicle, scissor lift, and material handling machine markets (99%). The reason for this? Wet-cell batteries generally have a more favorable cost/benefit ratio compared to sealed batteries, and although their maintenance needs are higher, they have a history of proven performance and industry acceptability. Now onto sealed batteries: The primary advantage of a sealed battery is that it will not emit corrosive gases during use or charging, and will not spill acid if tipped over. This makes them more popular for wheelchair manufacturers, and are growing in popularity in the floor-care machines markets for use in hospitals, nursing homes, etc. due to the increasing expectation of no acid spills, minimal maintenance, and non-corrosive gas emissions.