The Einhell Power-X-Change 18 volt 3.0Ah Li-Ion battery features a 7-in-1 ABS: Active Battery Management System and a 3-Step LED battery control. The microprocessor controls key parameters like tempreture, voltage and a deeply discharged battery canbe charged in repair mode and 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 that ensures high ergonomic handling. Battery Type: Li-Ion. Voltage Supply: 18 Volt. Battery Capacity: 3,000 mAh.