9 UPS battery Buying guide

UPS Battery Buyer’s GuideThe working methods of UPS power supply At present, there are three common working methods on the market: backup, online interaction, and online double conversion (online pure line). The performance of the above UPS power supply from high to low is: online double conversion, online interaction, backup. Price is usually proportional to performance.

post-stamina. Determining battery life after UPS If you want longer delays, you may consider choosing a dual-purpose standard or purchasing a UPS without built-in batteries, both of which can be equipped with original batteries or third-party batteries for longer delays.

Price positioning, give yourself a positioning, which price to choose UPS, high-end or low-end. When choosing a UPS battery, you need to understand your business needs, as well as your financial budget, and set the capital and operating costs of your UPS system.

The installation of UPS power supply. Generally speaking, UPS power supply can be installed in two ways, one is tower installation, the other is rack installation, you can also choose according to your computer room environment and site environment, and it should be noted that not all The UPS power supply also supports the installation method.

UPS batteries can last at least 3 years. When choosing a UPS power supply, you should determine the selection criteria according to your own requirements and choose the most suitable UPS for use. UPS products are gradually becoming high-frequency products in the medium and low power market segments. High frequency UPS has the characteristics of high power density, small size and light weight.

How much does a uninterruptible power supply cost?

For from about $80 to $200 for most systems, a UPS can provide a remarkable amount of peace of mind coupled with additional uptime and less loss. UPSes aren’t new. They date back decades. But the cost has never been lower and the profusion of options never larger.

What size uninterruptible power supply do I need?

First of all, you need to determine the power of your device. Generally speaking, the power of an ordinary PC or industrial computer is about 200W, that of an Apple computer is about 300W, and that of a server is between 300W and 600W. The power value of other devices can refer to the power of the device. manual.

Secondly, it should be understood that there are two ways to express the rated power of the UPS: apparent power (unit VA) and actual output power (unit W). This difference is caused by the existence of reactive power. The conversion relationship between the two is: at power * power factor = actual output power

The power factor of backup type and online interactive type is between 0.5 and 0.7, and the power factor of online type is generally 0.8.

When equipping equipment with UPS, the actual output power of the UPS should be used as the basis for matching. Some dealers will confuse the difference between (VA) and (W) intentionally or unintentionally. This point should be drawn to the user’s attention.

What are the different types of uninterruptible power supply?

UPS is divided into three categories according to the working principle: backup type, online type and online interactive type;

Among them, the most commonly used backup UPS, such as the four-way HO series and SD series, has the most basic and important functions of UPS such as automatic voltage regulation, power failure protection, etc. Although there is generally a conversion time of about 10ms, the reverse The alternating current of the variable output is a square wave instead of a sine wave, but due to its simple structure, it has the advantages of low price and high reliability, so it is widely used in microcomputers, peripherals, POS machines and other fields;

The online UPS has a more complex structure, but it has perfect performance and can solve all power supply problems. For example, the four-way PS series, its remarkable feature is that it can continuously output pure sine wave alternating current with zero interruption, and can solve all the problems such as peaks, surges, and frequency drifts. Power supply problems; due to the need for large investment, it is usually used in environments with severe power requirements such as key equipment and network centers;

In addition, four-way, APC and other manufacturers also provide online interactive UPS. Compared with the backup type, the online interactive UPS has the filtering function, strong anti-interference ability of the mains, the conversion time is less than 4ms, and the inverter output is an analog sine wave, so it can Equipped with network equipment such as servers and routers, or used in areas with harsh power environments; especially the UPS of the four-way MD series, whose price is much lower than the online type, is a better choice that should be strongly recommended to users.

How long does a uninterruptible power supply last?

While some UPS systems can last 15 or more years before needing to be replaced, these primary components are subject to failure far earlier. To avoid downtime or damage to critical equipment, make sure you understand the lifecycle and maintenance requirements of a UPS’s key components.

What is the function of uninterruptible power supply?

  1. Stable voltage: The voltage in the power grid will inevitably be affected by external factors and fluctuate. For some finer instruments, the voltage is unstable, which means the reduction of the life of the expensive machine. Therefore, it is necessary to introduce a device that can stabilize the voltage at this time. When the UPS is connected to the circuit, the current first flows into the UPS, and then discharges through the UPS battery and flows into the circuit system. The discharge voltage of the UPS power supply is relatively stable, generally speaking, the fluctuation will not exceed 2V.
  2. Power failure protection: This is the main function of the UPS we mentioned above. It can be transferred to the battery power supply instantly after a power failure, so that the equipment in the circuit will not be disturbed by the power failure.
  3. Overvoltage and undervoltage protection: In the first item, we talked about voltage fluctuations. But if the voltage fluctuates too much—too high or too low, the UPS will automatically disconnect the utility power and use the battery pack for power.
  4. Stable frequency: In addition to voltage, UPS can also protect the frequency in the circuit. All domestic electrical appliances are marked, and the applicable frequency is 50Hz, but the frequency in the mains grid may also fluctuate. But after connecting to the UPS, the frequency of the electric energy released by the battery pack can be stabilized at 50Hz.

How does a uninterruptible power supply UPS provide extra protection?

  1. Power-off protection function

When the utility grid is suddenly cut off, the UPS will immediately convert the DC power of the UPS power supply battery into AC current and continue to deliver power to the load to prevent troubles and losses caused by power cuts.

  1. Voltage stabilization protection function

When the mains voltage is easily affected by the distance and quality of the power transmission route, the voltage closer to the substation is higher, and the voltage farther away from the substation is lower. If the voltage is too high or too low, it will affect the quality and life of the equipment, and if it is more serious, it will affect the equipment and cause serious losses to users. The use of UPS uninterruptible power supply can bring a relatively stable voltage power supply to the user’s equipment to ensure the normal operation of the equipment and prolong its life.

  1. High and low voltage protection function

When the mains voltage is suddenly high or low, the voltage stabilizer (AVR) in the UPS power supply keeps the mains voltage in a usable and reliable range to ensure the normal operation of the equipment. When the high and low voltages are higher than the usable range, the UPS will start the battery to transmit electricity to ensure the continuous operation of the equipment.

  1. Harmonic distortion protection function

When power is delivered to the end of use through the transmission and distribution line, the voltage waveform is distorted, and the amount of fundamental current changes to generate harmonics. Harmonics will affect the use of equipment. According to UPS uninterruptible power supply, it can provide stable and high-quality power supply for equipment, and reasonably improve the operation efficiency and life of equipment.

5. stable frequency function

The frequency is the cycle that the mains changes every second, 50Hz is 50 cycles per second. When the mains generator is running, it is subject to a sudden change in the power consumption of the user, and the change in the rotational speed will cause the frequency of the converted power to be indeterminate. According to the power converted by the UPS power supply, a relatively stable frequency can be provided to ensure the normal operation of the equipment.

  1. Instantaneous protection function

If the voltage surges and sags or instantaneous voltage drop occurs in the commercial power supply, such problems will affect the accuracy of the equipment, and in severe cases, the users of precision equipment will suffer losses. UPS uninterruptible power supply can provide stable voltage to protect equipment.

What is the best uninterruptible power supply brand?

PLB ups battery

How many watts does a UPS use?

As a very rough rule of thumb, the wattage rating of a UPS is approximately 0.6 * its VA rating so, as you have seen, a 700VA UPS is good for a power load of around (0.6 * 700) = 420W (your specs said 405W). Conversely, the minimum VA rating you need is approximately 1.6 * load wattage.

Are UPS power supplies noisy?

The whirring sound of the cooling fan is unavoidable, especially for high-power UPS, the sound is louder. Of course, when it is found that the sound is louder than the new purchase, dust removal should be carried out, especially the dust accumulation on the fan blades and the protective net.

buzzing. The power frequency sine wave output UPS has a large transformer inside. When the battery power is restored to the mains, it is not only necessary to meet the output, but also to charge the battery. The transformer works at full load and emits a 50-cycle AC hum that resonates with the chassis. There is a hum. This only happens at special times.


UPS batteries are widely used as a common energy storage device, ranging from daily household appliances, electric vehicles, to industrial industrial batteries, all of which have the shape of batteries. With the expansion of battery applications, battery brands emerge in an endless stream and are intricate, our customers should make the right choice when purchasing.

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