Microprocessor charger with an intelligent 9-stage automatic charging cycle for comprehensive battery care. It features fully automatic, microprocessor-controlled diagnostics, rescue, charging, and maintenance functions. The charger is particularly gentle on batteries thanks to its soft charging function. It includes a rescue function specifically designed for deeply discharged batteries, which activates at just 1.5 V. The charger has an LED display, a power supply function, and a temperature sensor. It is suitable for all common 12 and 24 V vehicle batteries.