• 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.. • Switch mode technology: Yes • Polarity protection: Yes • Output short protection: Yes • Non battery link protection: Yes • Over voltage protection: Yes • Over temperature protection: Yes • Cooling: Fan