GZD (W) series computer monitoring high-frequency switching DC power counters are the products that developed on the advanced exchange technology from abroad and the practical experience, the product has been included in the industrial city plans trial production. And it has the charging choice. The voltage can be regulated and has the functions of regulators current limit and regulators with the flow. The computer monitoring unit applies the LCD, and therefore has good human-computer interface. It displays the parameter of battery capacity, battery voltage, charging current, busbar voltage, load current and DC system. It shows the good current performance when several modules running at the same time, it can be charged alone and plug any one of those modules without affection the normal operation of other modules. The exchange can be reentered after loss; the system can automatically choose the best charging way according to the battery capacity. The computer monitoring does not affect the normal operation of DC system after it withdraws from system. The product has been reflected well after on the market. It has the features of advanced technology parameter, the accurate regulators, low ripple coefficient, small size, big power, stable performance, reliable running. It can be remote centralized and the comprehensive benefits are good. It can be applied to the unmanned substation.