High Reliability - high reliability and low failure rate with low operation and maintenance costs. Always available, easy to use and profitable. High Efficiency - efficiency and power saving. low heat loss and heat dissipation. Low overall power consumption and operating costs. Hight Safety - Dual protection. Active protective function. No fire or electric shock risk. Safety of network and supply. Fast Charging - Constant power output at different voltage nad temperatures. Fast charging capability in all scenarios. Dispatching power according to different demand.