The Einhell 18V 4.0Ah Power X-Change Rechargeable Battery is designed for universal use in the entire PXC product family. The single rechargeable battery and charger for all tools save significant costs of buying, and universal use also helps protect the environment and provides flexibility at the same time. The ABS process-controlled active battery management system ensures max safety, optimum tool performance, maximum operating time and maximum service life. The high-quality rechargeable battery resists the memory effect and self-discharge. The current charge level can be checked on a three-step LED display. There is a trough handle to enable the battery to be removed from each tool with ease.