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Written by Keith Harrison

Advantages and Disadvantages Of Having An Uninterruptible Power Supply

Advantages and Disadvantages Of Having An Uninterruptible Power Supply

An Uninterruptible Power Supply (UPS) is a device that provides emergency power when the main power supply fails. It kicks in instantly to avoid any blip in power and is often used with a backup generator. It’s frequently used in hospitals and places like data centres as they need constant power for some machines.

We look into both the advantages and disadvantages of having an uninterruptible power supply.


Advantages of Uninterruptible Power Supply


Power Consistency


A UPS will ensure there is no bow in power when there is a power outage. It also regulates power during spikes, surges and brownouts, ensuring your business runs smoothly.

Power Continuity

There is no disruption to your power supply when there is an outage. This ensures no important machines lose power before you can start your backup generators.


Prevents Significant Loss of Data

A UPS ensures that no electrical devices stop running when there is an outage, so all of your data will be protected and you have time to either power down important services or connect to your backup generators to ensure no data is lost.


Protects Machines/ Equipment

In a similar way to data protection, a UPS ensures that no damage is done to sensitive machinery. It gives you time to correctly power down or turn on backup generators.


Reduced Noise

Unlike backup generators a UPs has almost no noise output, meaning it will not disrupt your day to day activities and can be installed almost anywhere (including outside!)


Disadvantages of Uninterruptible Power Supply


Start-up Costs

Start-up costs can be higher than regular back up generators depending on what infrastructure you have in place already and what electrical devices/areas you need power in.


Needs High-Quality Batteries

To ensure your UPS is at optimum performance, you need to ensure it has high-quality batteries which can add to the cost of installation. Also, the batteries will need maintaining or replacing, which could be anywhere between 3-10 years depending on the battery.


Performance Affected by Environment

Hot environments wear out batteries quicker than cool ones, which means the area you install the UPS will affect its performance and longevity.


Requires Expert Installation

To ensure your UPS is correctly set up you will require an expert to install it into your current system. If incorrectly installed it may not work or potentially damage your existing power system.


Energy Use

A UPS system does require an energy input whilst it’s not fully functional to ensure it’s battery is fully charged and ready for a power outage. It also requires a communications input so it’s able to make users aware if there is a power outage.


Uninterruptible Power Supply at Celab


For many of our customers, the advantages of uninterruptible power supply outweigh the disadvantages. We have extensive experience designing and manufacturing custom uninterruptible power supply across a variety of different sectors, including defence.  We adhere to the highest standards through our missions and values as well as ‘best in class’ manufacturing.

If you want more information or to talk about your requirements please call us on 01420 477 011 or email at