Suitable for All Vehicle Types: 6 Amp battery charger maintains and charges any 4Ah-100Ah 12V, GEL, SLA, Flooded (WET), Deep Cycle Automotive or Marine battery. Pulse repair function can help repair your leaking battery and extend its life. Perfect for keeping your vehicles fully charged and maintained during year-round battery maintenance or long-term storage. Multiple Protection for Your Battery: Built-in circuit protections protect against reverse polarity, overcurrent, open circuit, short circuit and overheating. Perfect for worry-free long-term maintenance charging. Easy to Use and Connect: Clear, positive and negative, easy to connect and features reverse polarity protection. And with intelligent digital display, shows charging status and battery status, etc. When charging: 1. Check your battery parameters are compatible with charger (on the back of charger).2. Connect red clamp to positive pole (+), black clamp to negative pole (-). 3. The LCD screen will show battery voltage,