This Einhell Power-X-Change Starter Kit contains the following:

1 x 18V 5.2Ah Power X-Change Li-ion Battery featuring a 7-in-1 ABS: Active Battery Management System and a 3-Step LED battery control. The microprocessor controls key parameters like temperature and voltage, and even a deeply discharged battery can be charged in repair mode, which offers a long working battery life. The high-quality Li-ion battery cells provide nearly no self-discharge and the rubber-coated housing gives high impact protection and a high grip. It also has a recessed grip ensuring good ergonomic handling.

1 x Power X-Fastcharger 4A. Charges all batteries from the Einhell Power X-Change system. 4 amp fast-charging technology ensures shorter charging times. For optimum charging and maximum safety, the battery is permanently monitored by an intelligent charging management system. There is a refresh mode for reactivating exhaustively discharged batteries. All up-to-the-moment information is provided by the 6-stage charging level LED indicator. The body features integrated suspension eyelets to easily hang on the wall.

Specifications:

Mains Supply: 200-250V / 50-60Hz.
Output Voltage: 21V.
Output Current: 4000mA.
Weight: 0.46kg.