Product Features: Suitable for heavy charging duty for storage battery factories, bus companies, transportation organization, etc. Wide current adjusting range Intelligent , versatile and practical Automatically recognizes broken battery Multiple charging voltages:12V;24V;36V;48V;60V;72V Automatic overload and polarity reversal protections and warning prompts Automatically switches off when battery is fully charged and music prompt will ensure Product Specification: Input Voltage(50/60HZ): 220V 1PH Max Power(KVA): 2.5 Charge Current(A): 12/24/36/48/60/72 Charge Voltage (V): 0-30 Rates Reference Capacity(A/H):Ah 15h 10-500 Current Regulation Levels: 6 Product package: Net Weights: 45KG Gross Weights: 50KG Size(MM): W400 x D380 x H825 Quantity for 20'GP: 200 PCS Quantity for 40'GP: 448PCS Quantity for 40'HQ: 520PCS