Smart battery flashing light, charging battery real-time display. Fast charging, saving charging time and improving efficiency. Over-current protection, leakage protection, full pulse, multiple protections. Smart chips, , and welding chips all use smart electronic components. The use of ABS flame-retardant shell, fire-resistant and strong, let you use more . Automatically identify the positive and negative poles, and reverse the charging zero output. Intelligent timing, automatic shutdown after full charge, to that the battery is overcharged. Temperature compensation, high temperature in summer, automatic power off when over temperature. Specifications Type: 72V 20AH Output Voltage: 72-88V Output Current: 2.6 +/- 0.2A Input Voltage: 200V-220V 50Hz Battery Parameters: 6-DZM-20 Size: 18x8x6cm/7x3x2.4in Colour: Black Material: plastic Package Contents: 1 x Electric Vehicle Charger Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.