The CTEK CS FREE is an all-in-one solution for powering up flat batteries and maintaining vehicle batteries. It features adaptive booster (jump starter alternative), battery charger, and maintainer functions. This 12V device is designed to keep your batteries in peak condition wherever you are. Key Specifications: - Part Manufacturer: CTEK - Manufacturer Part Number: 40-462 - Alternative Part Number: 447441030 - EAN: 7340103404620 - Charging Voltage: 12 V - Charge Rate: 20 A - 12V Charge Capacity: Up to 20 Ah - 130 Ah