•Microprocessor control (CPU), 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 Specification: •Switchmode technology: Yes •Polarity protection: Yes •Output short protection: Yes •Non battery connection 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 •Minimum start voltage: 8.0V •Battery range: 2-300Ah •Thermal protect: 65+/-5℃ •Efficiency: about 85% Package included: •1 x Battery Charger •1 x English User Manual