Smart battery flashing light, real-time charging display. Fast charging, saves time and improves efficiency. Over-current protection, leakage protection, full pulse, multiple safety protections. Smart chips and welding components use advanced electronic technology. ABS flame-retardant housing provides fire resistance and durability for safer use. Automatically identifies positive and negative terminals; reverse polarity prevents charging. Intelligent timing control with automatic shutdown when fully charged to prevent overcharging. Temperature compensation function; automatically powers off in high-temperature conditions. Specifications: Type: 48V 20AH Output Voltage: 48-59V Output Current: 2.6 +/- 0.2A Input Voltage: 200V-220V 50Hz Battery Parameters: 6-DZM-20 Size: 18x8x6cm / 7x3x2.4in Color: Black Material: Plastic Package Contents: 1 x Electric Vehicle Charger Note: Light and display differences may cause slight color variation between image and actual item. Measurement error allowed is +/- 1-3cm.