The Einhell 18V 2x 4.0Ah PXC Starter Kit is the ideal basis for starting or expanding the Power X-Change range in your home. A single rechargeable battery and a single charger for all tools not only saves significant costs of buying, universal use also helps protect the environment and provides flexibility. For high Power, long + sustained working time and to use 36V (2x18V) devices, two Batteries are included.The ABS process-controlled active battery management system ensures maximum safety, optimum tool performance, maximum operating time and a maximum service life. The high-speed charging technology means short charging times, and for optimum charging and maximum safety the battery is permanently monitored by a charging management system