You are faced with the question of purchasing an uninterruptible power supply, but how to choose from a variety of existing models exactly the one that will fully satisfy your operating conditions and at the same time will not contain functions you do not need that you will have to pay for.
Instructions
Step 1
The first step is to find out for what purpose you need an uninterruptible power supply, and also decide on the battery life that would suit you. If the UPS is needed only in order to have time to save all the data and shut down without an emergency, you can take the cheapest model, designed to operate the computer within a few minutes. If it is important for you to continue working in the event of a power outage, then you should pay attention to more complex models with the possibility of emergency power supply of the computer up to an hour, but the cost of such devices is quite high. Pay attention to the total power consumed by your computer and buy an uninterruptible power supply capable of delivering 10-15% more power than the computer requires. This is to prevent the UPS from overloading and thus shutting down.
Step 2
If you will use an uninterruptible power supply not only for a computer, but also to protect peripheral equipment, then when choosing it, pay attention to the number of outlets. You can also purchase a model that has protection of the telephone line from power surges, which will be important if you actively use fax. When using the UPS in a living room or bedroom, take into account the noise level, as high-power models can generate noise in the order of 45dBl.
Step 3
Try to choose a model equipped with effective means of indication. It is extremely important to determine the moment of going offline, as well as to have an idea of the state of the battery and other current parameters in order to shut down the computer on time.
