High Power density. Online double conversion with full digital control. Wide input voltage range: 110~300Vac. Input power factor 0.99 with PFC. Smart charger design for optimized battery performance. Maximum charging current can be expanded to 12 A (long run unit). Multiple protection function. Multiple communication interface. Emergency power off function (EPO). ECO mode operation for energy saving. Generator compatible. Cold start. Intelligent fan speed regulation. Versatile LCD human-computer interface.