Features:  Microprocessor Control (CPU).   3-STAGE AUTOMATIC CHARGING.  This is a fully automatic battery charger with 3 charge stages.  Automatic charging protects your battery from being overcharged. 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 may also help restore drained and sulphated batteries.  Types of batteries: Most types of lead acid batteries including Calcium, GEL and AGM, Wet,EFB, etc..  An advanced battery recovery mode for repairing and storing, old, idle, damaged, stratified or sulfated.  Switchmode technology: Yes  Polarity protection: Yes  Output short protection: Yes  Non battery link protection: Yes  Over voltage protection: Yes  Over temperature protection: Yes  Cooling: Fan  Package Included:  1pc Charger + 1pc Manual  FS8A Details:  Input voltage: 100-240V AC, 50-60Hz  Rated output: 12V 8A 24V 4A  Minimum start voltage: 2.0V  Battery range: 6-150Ah  Thermal protect: 65'C+/-5'C  Efficiency: App. 85%.  Compliant standards: CB,CE, IEC60335, EN61000, EN55014  Dimension (L×W×H): 170×98×58mm   Weight: 560g  AC cable length: 110cm,  DC cable length: 60cm.