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The synonym “UPS” in this article refers to Uninterruptible Power Supply Unit and not United Parcel Service, the American delivery company. A UPS is a power supply system that has a battery. It helps to keep electronics from going off abruptly in cases of power outage or fluctuation. Some parts of the world including India still experience power outages and blackouts. In these places, working on a desktop computer becomes exceeding difficult. Unlike the laptop computer, desktops don’t have backup battery.  

Imagine working on a lengthy document and all of a sudden the power goes off, without you saving your work all the while. This can be very painful to say the least. To avoid this, people in these parts make sure they always save their work as they progress; every few minutes. The best solution to this problem is to invest in a UPS system; this voltage surge and spikes, voltage sags and total power failure. A computer UPS price usually ranges from 2000 Rupees to above 5000 Rupees. UPS price in India is quite affordable; except you need it for quite a number of appliances then you’ll have to go for the more expensive options. 

Importance of Owning a UPS Unit

  • When an abrupt power fluctuation or outage occurs, this can have adverse effects on your computer. Computers are fragile; such interruptions can affect the hard drive of your computer and lead to a chain reaction of unwanted occurrences from data loss to internal hardware issues. 
  • A UPS helps to bring the power voltage to a safe standard that won’t harm your computer. It is safe to say that they act as voltage stabilizers. This is very important because excessively high voltage can lead to overheating while low voltage can prevent your equipment from performing at its best. 
  • Shutting down the computer system properly is very necessary for the smooth running and overall health of the computer. A UPS gives you ample time to not only shut down properly but to also save all your work.  

Types of UPS Systems

It can be confusing to go into the marketplace without being armed with knowledge of the types of UPS systems that are available. I didn’t know there were different types of UPS’s until recently so don’t feel bad. In this section, we will talk about the three main types of UPS, their advantages and disadvantages and their characteristics. With this knowledge, you will know the type that really fits your needs. 

Online Double Conversion Technology

An uninterruptible power supply unit using online double conversion technology provides the highest level of power protection that you can find. This type of system converts the 230V input AC mains supply to DC power, which is then used to charge the battery of the UPS. The Direct Current flow is then fed through an inverter stage that reconfigures the 230V AC mains output. Now that the AC output has been completely reconstructed, it will be completely free from any interference such as spikes and voltage variations that emanates from the main power source. The output voltage and output frequency is controlled so as to ensure a clean and stable sine wave power output. Online UPS are able to withstand large fluctuations on the input voltage from the mains supply before transferring to battery power (usually 276V-184V) thus eliminating unnecessary battery discharges. Upon mains failure, the reins are handed to battery power in a seamless, no-break fashion. Some Online UPS also come equipped with various failsafe and self-diagnostic features that will instantly transfer the load onto the mains power if there is an issue within the UPS hardware, or if there is a case of overloading. 

Advantages of Online UPS

  • Offers Continuous & total power conditioning 
  • Usually provides Failsafe/overload protection with static bypass facility 
  • No break in transmission from DC to AC in case of mains failure 
  • Tolerates wide input voltage (fluctuations) 
  • Works well with generator sets 

Disadvantages of Online UPS

  • Usually more expensive than other types of UPS available 


Offline Standby Technology

During normal workings of an Offline UPS, the power flows straight through the unit and hence only RFI (radio-frequency interference) filtering is usually provided. When the input voltage fails or fluctuates outside of a pre-determined or pre-set tolerance window, the UPS detects this and triggers a relay to close. This allows the UPS to start feeding the UPS battery power through the inverter. The inverter is then switched on and a sine-wave form output is supplied. When the main power supply returns, the output is switched back onto mains and the inverter is turned off. Typically through this cycle, there will be a break of between 4-10ms (maybe more, maybe less) during the transfer to and from the battery mode. 

Advantages of Offline UPS

  • It is relatively cheaper 
  • Silent operation when in standby mode 
  • Acceptable level of efficiency 

Disadvantages of Offline UPS

  • Provides minimal power protection 
  • Poor output voltage regulation leading to sags and surges 
  • Transfer to battery mode is not seamless 
  • No failsafe feature present in case of overload or inverter malfunction 

Line-Interactive Technology

A line-interactive UPS operates in a very similar manner to offline UPS mentioned above, except with the advantage of better filtering. It can also boost and reduce output voltage depending on what’s most beneficial. However, it does not eliminating interference that emanates from the mains supply but what it does is to reduce the impact of spikes, surges and sags by ‘clipping’ the peaks and valleys, boosting power or switching to battery backup when the need arises. As with offline UPS, when the input voltage fluctuates outside of a pre-set tolerance window, the UPS detects this and a relay will close, thereby allowing the UPS to start feeding from the battery power via the inverter. The inverter in a good line-interactive UPS is sure to supply a sine wave output. Upon the return of the main power supply, the output is switched back onto mains and the inverter goes back to standby. 

As with offline UPS, there tends to be a break during the transfer to and from battery mode, though usually this will be shorter than with an offline UPS. 

Advantages of Line-Interactive UPS

  • It usually costs less than online UPS 
  • It provides better protection than offline UPS 
  • Silent operation when in standby mode 
  • It is efficient and gets the job done 

Disadvantages of Line-Interactive UPS

  • Occasionally, fluctuations in form of spikes and valleys can still be passed straight to the load 
  • Break on transfer to battery mode, transfer is not seamless 
  • No failsafe feature in place 

Features to Look Out For in a UPS Unit

Basically, a UPS unit is effectively just a sophisticated battery; there are tons of little features that can greatly enhance your UPS experience. Now that you know the types of UPS out there, their pros and cons, let’s take a look at additional features you’ll want to consider when picking out a UPS unit. 

Supplementary software/OS compatibility: UPS units aren’t just power strips or voltage regulators with big old batteries attached.  It is not unusual to see a UPS unit with a software component for interfacing with the computer it is attached to. If you’re buying a unit that costs a lot of money, I suggest you look out for this feature. For most units, this is a simple USB cable run between the UPS and the computer, so that when the unit switches over to battery power it can alert the attached computer and initiate the shut-down process even in your absence. 

If the UPS unit you desire does not communicate with devices, that’s totally fine. If it does, do make sure that it can communicate specifically with your operating system. Windows users won’t have a problem with this because most UPS are designed to be compatible with them; some are designed for windows-only. Don’t buy one that is not compatible with your operating system such as MacOS or Linux (especially if you really fancy the interfacing feature). 

Number of outlets: Make sure there are enough outlets to cater for your needs. Some brands include outlet related features for example, putting peripherals in sleep mode when not in use to save energy. 

Cable filters: If the UPS unit is intended to be used for your cable modem and router, for example, you’ll want to double check the specifications to ensure that the UPS unit includes surge protected/filtered ports for your Ethernet and Coax cables. (Note: Ethernet ports on UPS units are notoriously flaky, so it’s usually best to isolate the source of the Ethernet, e.g. the router or network switch, with its own protection instead of worrying about isolating every single cable before it reaches a computer or device.) 

Displays: Not all UPS units have displays (don’t be worried if yours doesn’t), but they can be very useful. It is common for older units and newer low-end units not to have displays. Without a display, you’re limited in receiving feedback from the UPS either via communication over the USB/serial cable or as beeps from the unit. A compact display screen that can tell you additional valuable information like remaining run time, battery health, etc. is very handy. 

Noise/Fans: Small UPS units generally do not have fans so they’re really quiet. Larger units however often do, and it’s worth reading reviews and digging around online to see if the fans are as quiet as the manufacturer claims they are. Fan noise won’t be an issue if the UPS will be kept in the basement but considering the fact that a large percentage of houses in India don’t have basements, they’ll have to be kept in the house. If your intention is to add the UPS unit to your home theater setup, then a noisy fan will most definitely be a problem.  

User-replaceable batteries: A very important question to ask before purchase is “does the unit have user-replaceable batteries, and how much do they cost?” UPS batteries don’t and won’t last forever, you might be told otherwise of course. Usually, 3-5 years is the best you can hope for. When the battery finally fails, and it will trust me, you’ll be faced with two options; to buy new batteries (if you can swap them yourself) or buy a brand new unit. If you’re spending good money on that UPS, make sure he battery is user-replaceable. It makes no sense to dump an expensive UPS unit because of the inability to replace the battery (a simple procedure in most cases).  


In this section, we will take a look at the best UPS units available in India. Amazon is the best place to get the complete UPS for computer price list. 

APC BX600C-IN 600VA, 230V Back UPS

APC BX600C-IN 600VA, 230V Back UPS

This is perhaps the best UPS for computer in India. APC is a dominant brand in the UPS domain; we will be seeing more of their models in this article. This BX600 is one of the most sought-after UPS units in India. It comes equipped with a 230V lithium polymer battery with 360 watts. The battery life is approximately 3 years so have it at the back of your mind that in about three years, you will have to change the battery. 

According to the company, the battery takes 4 hours to charge fully while its average standby time is 20 minutes (depending on the appliances being used). 

One of the cons of this product is that it gets switched off when the load becomes heavy; there’s no fail safe feature. 

Product features 

  • Battery charge time: 4 hours 
  • Average battery life: 3 years 
  • Voltage: 230 volts 
  • Average standby: 20 minutes 
  • Weight: 4.7kg 
  • Warranty: 2 years 

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iBall Nirantar UPS-621V 600VA UPS

iBall Nirantar UPS-621V 600VA UPS

iBall was founded in 2001 and has been on the rise ever since with so many technological products. They produce phones, tablet PCs, laptops, networking equipment, peripherals, security technology, UPS, etc. The product under scrutiny is their Nirantar 621V 600VA UPS system. This unit provides you a backup power when there is electricity cut, which is common in India. It boasts of a fast recharge time, wide input voltage range and voltage regulator. 

One great advantage is the fast charging feature. The company claims that this unit charges 33% faster (not sure what It’s being compared to). It takes between 4-8ms to transfer from mains to standby and the noise level is less than 40dB. 

Now you can connect your Wi-Fi router and never lose your internet connection again. Your desktop is completely safe as this unit can provide up to 40 minutes of standby time; adequate for a proper shut down. The standby time this unit can provides depends on the appliances connected to it. It’ll last longer if it is being used with a Wi-Fi router alone than when used with a core i7 PC. 

Product Features 

  • Battery charge time: 3 hours 
  • Average standby: up to 40 minutes with standard PC; up to 3 hours with smaller appliances 
  • Voltage: 230 volts 
  • Weight: 4.25kg 
  • Warranty: 2 years (1 year for the battery) 

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Emerson Liebert iTON CX 600 VA Line Interactive UPS

Emerson Liebert iTON CX 600 VA Line Interactive UPS

This UPS is the brain child of Emerson Network Power now owned by Platinum Electric (its actually called Vertiv now). This UPS unit is in the midrange budget level with adequate power to keep your appliances running during power cuts. It has an output power of 0.6 kilowatts and takes approximately 6 hours to recharge. This is a line-interactive UPS meaning that the output is sine wave. This unit can give between 10 – 25 minutes of standby power with normal PC with a tendency to offer much more for smaller appliances/ 

Product features 

  • Battery charge time: 6 hours 
  • Average standby time: 10 – 25 minutes (PC) 
  • Voltage: 230 volts 
  • Weight: 4.2kg 

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iBall Nirantar UPS 1080V With Dual Battery (1KVA)

iBall Nirantar UPS 1080V With Dual Battery (1KVA)

This is the second iBall UPS we’re reviewing on this piece only this time, it’s a 1kva UPS with dual battery. For something that gives that much power, it is very quiet.  If you have many appliances that don’t need to turn off abruptly during power cuts, this UPS is the one for you. This can run your desktop PC and other small appliances maybe a PS4, router, digital camera altogether for around 10-15 minutes on standby. However, 1kva comes at a more expensive rate as you’d expect. This is one of the most expensive units on this list but I doubt if you’ll feel that way because it is really good and does the job extremely well. It spots a line-interactive design, 33% faster charging and can be charged with both inverter and generators; worth every penny if you ask me. Check out this UPS 1KVA price on Amazon. 

Product features 

  • 1KVA 
  • Battery charge time: 6 hours (Fast charging) 
  • Average standby time: 10-15 minutes (heavy usage) 
  • Design: Line-interactive 
  • Weight: 9.22kg 

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Intex Protector 725 UPS

Intex Protector 725 UPS

This UPS by Intex is powered by a lithium-ion battery. It has a very compact design and doesn’t weigh much so it can pretty much fit anywhere. It has enough power to run your computer and other devices for at least 10 minutes before power restoration. It also doubles as an automatic voltage regulator, meaning that it stabilizes the output voltage during fluctuations. It has a feature that makes it shut down automatically when there is no load connected to it. 

Product Features 

  • Average charge time: 6 hours 
  • Average standby time: 20 minutes (moderate load) 
  • Weight: 4.2kg 
  • Warranty: 1 year 

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VGUARD SESTO 600 600VA Application Desktop UPS

VGUARD SESTO 600 600VA Application Desktop UPS

Vguard is a reputable company known in both India and China for high quality products. The design of this UPS is similar to the Intex protector previously reviewed. It is compact and weighs the same as the protector. It is labeled ‘desktop UPS’ but I’m sure you can use other appliances with it, like a router or something. According to the company, this unit can be used with a complete desktop setup comprising of the system unit, a TFT monitor and one printer (except laser printer). It is a pocket-friendly UPS and keeps your devices running for a couple of minutes, a good deal. 

Product Features 

  • Capacity: 600VA 
  • Average charge time: 8 hours 
  • Average standby time: 15-20 minutes 
  • Weight: 4.2kg 
  • Warranty: 1 year on battery, 2 years on product itself 

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Microtek Static Converter SEBz 1100 UPS

Microtek Static Converter SEBz 1100 UPS

This UPS unit stands out from the crowd with its white finish. It also stands in landscape as opposed to the portrait we’re used to. This is not the cheapest nor the lightest UPS out there but at least it get the job done, after all it is 1100VA. Output is in pure sine wave and it takes less than 15ms to transfer to UPS. It also spots an auto restart feature. This Microtek computer UPS price list can be gotten from Amazon. 

Product Features 

  • Average charge time: 8 hours 
  • Average standby time: 15-20 minutes (heavy load) 
  • Weight: 11.1kg 
  • Warranty: 2 years 

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APC BX1100C-IN 1100VA 230V UPS

APC BX1100C-IN 1100VA 230V UPS

APC is a reputable brand in the UPS segment. We’ve reviewed one of their products already, a smaller unit though. This right here is a 1100VA UPS, it carries more power than the one previously reviewed. It weighs 9.8kg, surprisingly lightweight for a 1.1kva UPS. This is one of the expensive units reviewed here and with god reason. It can conveniently run up to 4 devices on standby for about 15-20 minutes. It operates on the line-interactive topology meaning that the output is sine wave. At a noise level of 45Db, it is a pretty quiet UPS. The only noise being the audible beeps which provides notification for various operations. 

It features LED indicators, automatic voltage regulator and battery saver for extended battery life. 

Product Features 

  • Average charge time: 6 hours 
  • Average standby time: 15-20 minutes (heavy usage) 
  • Weight: 9.8kg 
  • Capacity: 1.1KVA 
  • Warranty: 1 year (from the manufacturer) 

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A UPS unit is an absolute necessity because it is not unusual to experience fluctuations every now and then. Many areas in India experience such surges and sags and these are not good for your electronics. UPS units not only provide backup power during power cuts but some also act as voltage regulators.  

Abrupt loss of power will result to sudden shut down of your appliances; this is not good for your electronics especially your PC. We’ve all at one time or the other been faced with the issue of unsaved work (maybe not all of us). Such an occurrence can be avoided with a UPS. Gamers can benefit from this too; not having to restart a level that took you days/weeks to reach because of a power cut. 

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