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, Wet, LiFePO4, lead Acid batteries. They may also help restore drained and sulphated batteries Types of batteries: Most types of batteries including Calcium, Gel AGM, Wet, LiFePO4, lead Acid, etc. Suitable for 12V-24V motorcycles, cars, off-road vehicles, SUV/all kinds of lead-acid battery Made of ABS flame retardant material with insulation flame retardancy, and high temperature resistance Visual charging display, touch screen, easy to operate Specifications: Microprocessor Control (CPU): Yes 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 20A , 24V 10A 14.6V 29.2V LiFeP04 Minimum start voltage: 5.0V Battery range: 6-300Ah Thermal protect: 65℃±5℃ Efficiency: App. 85%