What are the differences between wet and gel batteries for use in my electric wheelchair?
Wet batteries will require you to add distilled water about once every two months. Wet batteries can be damaged permanently if the water level falls below the level of the battery plates. Adding water is quite difficult for the wheelchair user because wet batteries are heavy and difficult to reach, so it usually requires the help of a second person. Gel batteries don’t require water, so they eliminate corrosion. The main disadvantage of gel batteries is that they usually cost more and have about 10 to 20% less capacity than wet batteries do.