•7 stages of automatic charging: This is a fully automatic battery charger with 7 charging stages •Automatic charging protects your battery from being overcharged. So you can leave the charger connected to the battery indefinitely •The 7-stage charger is suitable for most battery types including calcium, gel, AGM, lithium, LiFePo4, wet, lead-acid batteries. They may also help restore drained and sulfated batteries •Intelligent digital display: The LCD screen can show current/voltage/charging status/battery status •Multiple protection: polarity protection, output short circuit protection, over-voltage protection, over-temperature protection, etc. Specification: •Switchmode Technology: Yes •Polarity Protection: Yes •Output Short Circuit Protection: Yes •Non-Battery Link Protection: Yes •Over-voltage Protection: Yes •Over temperature protection: yes •Cooling method: fan •Input voltage: 100-240V AC, 50-60Hz •Rated output: 12V 6A, 24V 3A •Minimum startup voltage: 8.0V •Battery range: 6-120Ah •Thermal protection: 65℃+/-5℃ •Efficiency: about 85% Package included: •1 x Battery Charger •1 x English User Manual