UPS称为不间断电源，是因为停电的时候，它能快速转换到"逆变"状态，从而不会让在使用中的电脑因为突然停电未来得及存储而失去重要文件。不是用来当备用电源用的，如果你只是想在停电的时候可以用电，光买逆变器就够了。 一般家用UPS里用的大多是，免维护型铅酸VISION威神蓄电池。VISION威神蓄电池是UPS用来作为储存电能的装置，它由若干个电池串联而成，其容量大小决定了其维持放电(供电)的时间。
VISION威神蓄电池是UPS系统中最不可靠的部分，但是UPS设计得好坏直接影响到电池的可靠性。让VISION威神蓄电池一直保持充电UPS停机)能延长电池的寿命，尽量避免选用电池电压高的UPS。有的UPS设计会使VISION威神蓄电池产生纹波电流，造成VISION威神蓄电池不必要的过热。大多数UPS使用的电池都差不多，但UPS设计不同会大大影响电池的寿命。

  安装VISION威神蓄电池时务必遵守以下事项：

  不要在密封空间或火的附近安装VISION威神蓄电池，否则有引发爆炸及火灾的危险；
  不要用乙烯薄膜类有可能引发静电的东西盖住VISION威神蓄电池，产生静电时有时会引起爆炸；
  不要在有可能进水的地方安装VISION威神蓄电池，否则有发生触电、火灾的危险；
  请不要在超过-40 °C~60 °C环境下安装VISION威神蓄电池；
  不要在有粉尘的地方使用VISION威神蓄电池，否则有可能造成VISION威神蓄电池短路；
  将VISION威神蓄电池放进箱内使用时，要注意空气流通；
  不要有粘性或标贴类物体压住上盖，因上盖下面有排气阀，电池内产生的气体将不能逸出；

  并联的个数——浮充电时，插接式端子电池最多只能关联三列，螺栓紧固式端子没有特别限制，但并联数量小可靠性增加。另外，并联接线时，有必要考虑使各列之间接线导体和接触电阻等同，为使各列充放电电池保持均衡，实际使用上请不要超过三列。

UPS is called an uninterruptible power supply, because of the power failure, it can be quickly converted to "inverter" state, so that the computer will not be used in the future because of sudden power failure and storage and the loss of important documents. Is not used as a backup power supply, if you just want to be able to use electricity when the power outage, the light is enough to buy the inverter. General household UPS used in most of the maintenance free lead-acid batteries VISION Granville God battery. VISION battery is a kind of UPS used as a storage device, which consists of a number of batteries in series, the size of its capacity to maintain the discharge (power) time.
VISION battery is the most unreliable part of the UPS system, but the UPS design directly affects the reliability of the battery. Let VISION Granville God battery has been kept charging UPS downtime can extend the battery life, try to avoid the use of high battery voltage UPS. Some of the UPS design will make the VISION Granville battery to generate ripple current, resulting in VISION God battery unnecessary overheating. Most batteries used in UPS are similar, but the different design of the UPS will greatly affect the life of the battery.
Please obey the following install VISION Wei God battery:
Do not install the VISION battery in the sealed space near the Wei God or the fire, otherwise there is danger caused by explosion and fire;
Cover the VISION battery Wei God don't use vinyl film class may cause electrostatic, electrostatic sometimes caused by explosion;
Do not install the VISION battery in May the water god Wei place, otherwise dangerous electric shock, fire;
Please do not install the VISION battery in the Wei God more than -40 ~ C~60 ~ C environment;
Do not use the VISION Wei God battery in the dust place, otherwise it may cause a VISION power battery short circuit of god;
VISION Wei put battery into the box of God when using, should pay attention to air circulation;
Don't viscous or label objects on the cover, the upper cover below the exhaust valve, the gas generated in the battery will not escape;
The number of parallel - float charging, plug terminal battery can only be associated with three columns, bolt type terminal no special restrictions, but a small number of parallel reliability increase. In addition, the parallel connection, it is necessary to consider the connection between the conductor and the contact resistance of each column equivalent, so that the charging and discharging batteries in each row to maintain a balance, the actual use, please do not exceed three columns.