目前，我们现有的市电系统存在不稳定因素，为保证计算机和网络系统的供电正常，应使用UPS不间断供电电源。
At present, Urban electricity system exists unstable factor, for guaranteed the normal supply of power for computer and network system, UPS should be used to supply uninterrupted electric power.
铅酸电池是UPS不间断电源系统重要组成部分，电池性能的优劣直接影响整个供电系统的安全性和可靠性。
Lead acid battery is an important part of the Uninterruptable power system UPS, the battery performance effect directly the safety and reliability of the whole power supply system.
文章论述了UPS(不间断电源系统)的原理和性能指标，并从网络设备维护管理工作实践出发，总结了UPS使用的技巧和维护要点。
In this paper, the principle and the performance index of UPS is presented. It also summarizes the skills and maintains of UPS based on the practice of management of network equipments.
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