Forklift manufacturers have made substantial improvements to all models in recent years from diesel, propane, gasoline and electric. Each forklift type has definite advantages and should be used in the proper setting to ensure safety and longevity, and multiple forklift types will be required for larger operations with indoor and outdoor jobs that require lifting large loads. Electric forklifts fill a very distinct (and expanding) niche for warehouses and companies up and down the supply chain who are looking to avoid a loud, dirty environment that is often associated with industrial equipment. Electric forklift owners realize significant advantages in the areas of cost, operation and maintenance. Indoor use is essential for the electric forklift because the clean, dry environment is best for the battery and other systems on-board.