•7-Stage Automatic Charging: This is a fully automatic battery charger with 7 charge stages •Automatic charging protects your battery from being overcharged. So you can leave the charger connected to the battery indefinitely •7-stage chargers are suitable for most battery types including Calcium, Gel AGM, LiFePo4, 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, LiFePo4, 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 10A, 24V 5A •Minimum start voltage: 8.0V •Battery range: 4-200Ah •Thermal protection: 65℃+/-5℃ •Efficiency: App. 85% Package included: •1 x Battery Charger •1 x English Manual •Other items not included