•This is a fully automatic battery charger •Automatic charging protects your battery from being overcharged. So you can leave the charger connected to the battery indefinitely •Smart chargers are suitable for most battery types including Calcium, Gel AGM, Wet, and Lead Acid batteries. They may also help restore drained and sulphated batteries •Types of batteries: Most types of lead acid batteries include Calcium, Gel AGM, Wet, lead Acid, etc. Specifications: •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 •Input voltage: 100-240V AC, 50-60Hz •Rated output: 12V •Minimum start voltage: 8.0V •Battery range: 2-150Ah •Thermal protection: 65℃+/-5℃ •Efficiency: App. 85% Package included: •1 x Battery Charger •1 x English Manual •Other items not included