In recent years, lithium-ion batteries have gained popularity in the electric wheelchair market due to their numerous advantages. They are significantly lighter than both lead-acid and NiMH batteries, providing users with increased portability and range. Lithium-ion batteries also have a longer lifespan, often lasting up to five years or more with proper care. Additionally, they charge faster and have a higher energy density, which means they can store more power in a smaller size. Despite their higher initial cost, the long-term savings on replacements and the battery's efficiency make them an attractive option for many users.