Microprocessor (CPU) control. 3-STAGE AUTOMATIC CHARGING: This is a fully automatic battery charger with 3 charging stages. Automatic charging protects your battery from overcharging, so you can leave the charger connected to the battery indefinitely. 3-stage chargers are suitable for most battery types, including calcium, gel, and AGM wet batteries. They can also help restore drained and sulfated batteries. Battery Types: Most types of lead-acid batteries, including calcium, GEL and AGM, water, EFB, etc. Switchmode Technology: Yes Polarity Protection: Yes Output Short Circuit Protection: Yes No-Battery Link Protection: Yes Over Voltage Protection: Yes Over Temperature Protection: Yes Fan Input Voltage: 100-240V AC, 50-60Hz Rated Output: 12V 8A 24V 4A Minimum Cranking Voltage: 2.0V Battery Range: 6-150 Ah Thermal protection: 65°C+/-5°C Efficiency: approx. 85%. Compliant standards: CB, CE, IEC60335, EN61000, EN55014 Dimensions (L×W×H): 170×98×58mm Weight: 560g Product Description