Lithium-Ion UPS vs VRLA UPS

Lithium UPS

Our Lithium Ion UPS range is an impressive series of UPSs with internal Lithium Ion batteries, that make the units efficient, lightweight and more environment friendly. They also reduce the whole life costs of the UPSs. We have conducted some tests to show you how the Lithium-Ion UPS compares to the VRLA UPS in terms of runtime.

Each unit is connected to 1800W load. The Lithium UPS battery capacity is 48V 9.9Ah = 475VAh. The VRLA UPS battery capacity is 72V 9Ah = 648VAh. Although the Lithium UPS has only 75% of VRLA UPSs battery capacity, the runtime results are outstanding! See the video below:

We provide 5-year warranty on the Lithium-Ion UPS systems including the batteries.
Lithium-Ion UPS only from Power Inspired. Learn more at and register your interest.

Lithium-Ion UPS

Great savings on the MAXICs!

maxic special offer

Our MAXICs are the perfect solution for off-grid applications where long runtimes are required. A built in solar charger allows you to attach the unit to a solar array to recharge the battery instead of using utility power. It ‘s a truly multi-functional inverter/charger which combines the functions of an inverter, a solar charger and a battery charger to offer uninterruptible power support to your load.

Available in 1KVA and 5KVA ratings, our MAXICs are manufactured to CE standards in state-of-the-art ISO9000/14000 factories.

Read our article about cost vs. quality of inverter chargers on the market here.

Don’t miss out on this huge saving and order your bargain MAXIC from our webstore here.

*Free delivery to standard postcodes, next working day- we’ll provide a 1 hour slot. While stock lasts.

Natural Disaster Survival Kit

natural disaster survival kit

Severe weather conditions and natural disasters are more of a threat in certain geographical areas than others. You need to be prepared if you live in a high risk area. It is recommended that you have an Emergency Supply Kit ready for when severe weather strikes.
A separate kit for home, work and for your vehicle is a good idea

Priority items are:


1. Water and food

tinned food You should have sufficient supplies of water and long-life foods. Stock 4 litres of water per person per day with supplies for three days for evacuation. You should hold 2 week worth of supplies at home and sufficient amount of food for the same period of time. Don’t forget to have the appropriate supply of pet food and of course water is also essential.



2. Important medications

You should have at least one week’s supply of prescription medications and common meditations such as pain killers, antiacids etc. Your survival kit should also include a first-aid kit.



3. Documents

important documents
You should have copies of personal documents including birth certificates, passports, medication lists, medical records, insurance and bank policies etc. in a waterproof container ready to be taken with you during evacuation.




4. Personal hygiene items

including soap, tooth brushes and toothpaste, towels, deodorant and other essential items.






5. Electronicsmobile

Your emergency supply kit should also include your mobile phone, chargers, battery backup, battery-powered radio, extra batteries and a contingency power supply solution for operating any medical equipment that is used regularly.











7. Other essentialsflashlight

Blankets, flashlight & spare batteries, multipurpose tools and maps should also be included in your emergency supply kits.





You may also want to include:

  1. Whistle, dust mask, glasses and contact lenses
  2. Sleeping bags for each person
  3. Paper plates, cups, plastic containers
  4. Water cleansing drops, matches
  5. Fire extinguisher
  6. Spare clothes and sturdy shoes
  7. Baby formula, nappies, bottles etc.


When a disaster strikes it is never pleasant but with the emergency supply kit you will feel more comfortable and at ease knowing you are prepared for any scenario.

Top 5 interesting facts about UPS

Facts about Uninterruptible Power Supply

You probably know how Uninterruptible Power Supplies work and what their purpose is, but we have the top 5 interesting facts about UPSs that you probably didn’t know!


UPS facts - UPS inventor

The history of Uninterruptible Power Supplies is somewhat a mystery – nobody can name one person or one date when UPSs systems were invented. There were many theorists and scientists involved in research and studies, however nobody  can claim to be the inventor of UPS.



UPS facts - ups patent
source: google/patents

This rather amusing acronym stands for “Apparatus for Maintaining an Unfailing and Uninterrupted Supply of Electrical Energy”, which is a first ever UPS patented in 1934 by John J. Hanley. Mr. Hanley mentions in the document that the invention is to be used with fire alarms and other safety systems to protect properties and lives. It is amazing how far UPSs have come since then and how the variety of applications widened since 1930s. The AMUUSEE was an ancestor of UPSs as we know them now. We are certainly grateful that UPSs are now called Uninterruptible Power Supply rather than the tongue twister that is used to be back in the day.

You can read the whole patent document at google/patents.


UPS facts - largest ups in the world

The largest Uninterruptible Power Supply system in the world is a 46-megawatt system in Alaska.  The system is called the “Battery Electric Storage System (BESS)” and is located in Fairbanks, Alaska where it powers the entire town! It can provide up to 15 minutes runtime at 26 megawatts, providing enough backup power until the generator comes on. The runtime is achieved by four battery strings, each containing 344 series of connected battery modules. That is one truly amazing UPS.


UPS facts - batteryA UPS is nothing without batteries. Did you know that majority of faults within UPSs are related to batteries? Good batteries matter and so to ensure your UPS provides maximum reliability, you need to organise for appropriate maintenance. Power Inspired Uninterruptible Power Supply systems come with VRLA batteries with 3-5 year design. This time is however approximate and depends upon many factors, including the environment in which the UPS is stored. You can see how to prevent premature battery failure in our previous blog.



UPS facts - TX Series Isolated UPS SystemsPower Inspired’s TX series provides unique safe UPS technology. The units contain an isolation transformer which protects from electric shock and ensures the UPS is isolated and safe. TX series units range between 1KVA – 10KVA, they have a small footprint and the design is highly modern and minimalistic. The larger units (3KVA, 6KVA and 10KVA) also come with wheels for ease of installation. TX series UPS are designed to provide highest degrees of power protection for laboratory, industrial and medical applications. More information about TX series can be found here.

UPS ECO mode – what’s so good about it?

UPS eco mode

All of our online double conversion UPS systems feature a setting option to run the UPS in an ECO mode. What does this mean? And is it beneficial for you? We will try to answer those questions for you.

An ECO mode in UPS systems essentially means that the UPS’s inverter is in a standby mode. It only kicks in if the mains power fails. By enabling ECO mode on your UPS it will basically have the same operation as a regular line interactive UPS.  In a nutshell, by enabling the ECO mode you’ll expose the load to raw utility power.

What’s good about it?

The ECO mode has some great advantages, such as efficiency improved from 94%-97% to 98%-99% and lower operation costs (up to 4% reduction on energy use). It may also prolong the lifetime of some of the UPS components due to the decreased operating temperature on these components – the UPS is in a bypass mode hence some components are not in use which may prolong their life span.

What’s bad about it?

However the ECO mode not only has positives, it also comes with some risks: the fact that the UPS must first detect power failure and then turn on the inverter results in a transfer time that in some critical applications cannot be tolerated. Unlike the standard (online) mode of fully featured online UPS systems (our VFI-T, VFI-B and TX series) where the switchover time is nonexistent, this may be an issue for some critical, highly sensitive equipment. The ECO mode can improve UPS efficiency by about 2%-4%, however at the cost of possible downtime due to the switchover time. The switchover time can last anywhere from 1-16 milliseconds during which time your equipment will be exposed to any power problems present on the mains. Some equipment may be okay to cope with the transfer time, however some more complex and critical loads may be unable to tolerate it.

The ECO mode comes with some other risks: Besides the risk of reduced electrical protection which may have a negative impact on reliability and possible operation issues, the UPS in ECO mode will switch to battery at any instance of power problem which may have been easily dealt with without reverting to battery using standard online mode. This may negatively affects the battery’s lifetime and wear.


These are the advantages and disadvantages of using UPS in an ECO mode. The ECO mode can improve efficiency and reduce operation costs of your UPS, however while choosing your default operation mode, you need to bear in mind all the associated risk and decide if your equipment can take on the risk. As an operator you need to thoroughly consider all pros and cons and decide what settings will work best for you.

Top 10 amazing solar power plants

amazing solar farms

With global warming and air pollution rising, countries across the world are adopting more environmentally friendly ways of generating energy – one of the most widely used ways being solar panel plants. Companies are not only making the designs technically sound but also eye pleasing. Here are our top 10 solar power plants that will make you re-think solar panel designs.

1. Walt Disney World Solar Facility – Orlando, USA

Solar mickey mouse

The 5 megawatt solar farm is located on a 22 acre farm near the Epcot area and it is shaped as Mickey Mouse’s head!  It contains 48000 solar panels arranged to represent the well known Disney character. Disney joined powers with Duke Energy who in exchange for use of the land power the Disney Orlando resort. The solar farm is capable of powering around 1000 homes and Disney claims it is so large that it can be seen from space.


2. The Panda Power plant – Datong, China

panda solar farm

In Datong, China, a company called Panda Green Energy built a giant 248-acre solar farm in a shape of China’s most famous animal species. It is expected that the Panda Power Plant will be able to produce 3.2 billion kilowatt-hours of solar energy in 25 years, eliminating a million tons of coal and reducing carbon emissions by 2.74 million tons. The black and white colouring was achieved by using dark solar panels and light thin film solar panels. The company aims to develop 100 similar panda shaped installations across China.


3. Heart of New Caledonia – New Caledonia

heart-shaped solar plant

Even though it is yet to be built, the planned Heart of New Caledonia solar power plant is to be heart-shaped. The shape was inspired by Heart of Voh which is beautiful natural vegetation on the Voh Island in the Pacific Ocean. The 2 megawatt plant is planned to save 2 million tons of carbon emissions over 25 years and it will provide enough power to run 750 homes.


4. Tulip shaped solar plants

tulip solar plant

AORA Solar is to build the Solar-Biogas power plants in shape of Tulips in Ethiopia. The unique solar-hybrid system should provide energy and heat to support the local economy and off-grid locations in Ethiopia. AORA have already built similar systems in Samar, Israel and Almeria, Spain.


5. Gemasolar Thermosolar Plant – Seville, Spain

Gemasolar Thermosolar Plant
source: google maps

This spectacular solar plant was built in Spain and it occupies 520 acres of fields. The Gemasolar can supply 110 GWh per year which is enough to power 27500 homes. It is the first solar plant with a central tower receiver and molten salt heat storage technology used for commercial purposes.


6. Largest floating solar farm – Anhui, China

floating solar power plant
source: google maps

China aims to be the solar energy superpower and in recent years it has started to build more solar farms. Among others is the largest floating solar farm in the world located in Anhui near Huainan city consisting of whopping 12000 panels which was build on a flooded coal mine. The 40-megawatt power plant can power up to 15000 homes and even more strengthens China’s position as the world’s biggest investor in wind and solar energy.


7. IMAGINE community solar farm – Tathra, Australia

imagine solar farm

Australia’s first community-owned solar farm is located in Tathra and it consists of 120 250W panels placed to spell the word IMAGINE. It is expected to generate 40 MWh on average/annually and help power the adjoined Tathra’s sewerage treatment plant. Isn’t it amazing what a small grassroots community can do.


8. SolaRoad – Krommenie, Netherlands

solar bike path

Installed in 2014, the Netherlands’ solar powered bike path has been a huge success. The path consists of thin solar panels protected with 1cm transparent coating. In the first year the SolaRoad produced 9800kWh of power, clearly a novelty project but larger scale projects are emerging.


9. The mushroom solar farm – Japan

mushroom solar farm

Two farms in Japan will trial a new business model incorporating solar panels. The combined power they can produce is 4000 kilowatts that can be sold to the local utility, and they are expecting to grow around 40 tons of mushrooms each year! The darkness and humidity under the solar panels is ideal for mushroom growth and the project leaders hope that it will help farmers obtain stable income and it will contribute to sustainable development of Japan.


10. Power Inspired logo – Bicester, UK

power inspired solar
source: google maps

If Power Inspired had a Solar Farm, we’d call it “The Spike”. It would be a solar plant designed in a recognisable shape using our MAXIC inverters, visible from the M40 to remind everyone that sees it renewable energy has a place in our future power sources.*

*Disclaimer: this section is for humorous purposes only and does not include true information




Our MAXIC is an ideal solution for solar applications. More information about our MAXIC solar inverter / charger can be found here.


Christmas electricity related facts you had no idea about!

xmas fun facts

With Christmas just around the corner we have put together 9 Christmas electricity related fun facts you probably had no idea about:

1. First ever Christmas tree lights

Even though Thomas Edison invented the first light bulb in 1879, electric Christmas tree lights were not in use until 1882. Edward Hibberd Johnson, also called the Father of Electric Christmas Tree Lights, had tree light bulbs especially made for him and proudly displayed his Christmas tree at his home in New York. Since then, the popularity of electric Christmas tree lights grew and now we can’t even imagine Christmas without beautifully lit up Christmas tree. Rumour has it that it was a publicity stunt to get more attention to Edison Electric Light Company in which Mr. Johnson was an executive…

Christmas tree lights


2. An Electric eel for greener Christmas?

Enoshima Aquarium in Japan shocked the world when their main Christmas tree’s lights were entirely powered by an electric eel from the Amazon and Orinoco rivers. Each time it moves, it can produce up to 800W of electricity! They connected the tree to two aluminum panels inside the fish tank to act as electrodes. It will definitely save you on electricity bills, although we’re not quite sure if it’s the most aesthetic way of lighting up Christmas tree.

electric eel


3. Christmas light record breakers

According to the Guinness World Record, the Gay family holds the record for most lights on a residential property. They used 601,736 lights around their New York home! We don’t even want to imagine their electricity bill after breaking this record!

Guiness world record - most Christmas tree lights


4. The capital of Christmas light recycling

In Shijiao, China, Christmas trees get recycled and separated into brass, copper, plastic… Shijiao is called the capital of Christmas tree light recycling as they recycle over 20 million pounds of holiday lights every year! They get thumbs up from us.



5. Last Christmas was greenest yet

It is reported that 21.5% off electricity came from wind, making last Christmas greenest yet in the UK! 27.5% power came from nuclear, 6.7% from biomass and 17.3% from gas among others. Will Christmas 2017 be even greener than last year?

wind energy


6. Christmas electricity consumption

According to research carried in 2010, it was calculated that display of a 100 watt bulbs switched on for six hours a day over Christmas will consume 207 Kwh, which is the equivalent of 22.8 days of the average British household’s electricity consumption. Get tips on how to lower your energy consumption this Christmas in our blog post.

christmas lights


7. The largest floating Christmas tree with lots of lights

Another record breaker is the largest floating Christmas tree that was set up in 2007 in Rio De Janeiro, Brazil. The tree weighed 350 tons and stranded 53 meters tall.  Nearly 1500 staff was involved in the project which included decorations of 2.5 million miniature bulbs, 105km of rope lights, 25kms of tubing, 1700 strobes and 168 LED reflectors!

Rio christmas


8. Christmas light campaign in Colombia

Colombian government decorated jungle trees with fairy lights during Christmas in 2010 to convince FARC guerrillas to  demobilise and  re-enter society. The trees lit up when guerrillas walked by and a banner appeared asking them to surrender. The campaign was successful – 331 guerrillas got convinced to re-enter society and it also won an award for strategic marketing excellence.

Christmas lights campaign colombia


9. Winter 2017 without power?

Last year, a group of 60 local authorities warned the public that Winter 2017 may leave many British households without power due to closure of many power stations. Ofgem however ensured the public stating that they “are confident that electricity supplies will be secure”. Better stock up on UPSs to be on the safe side.

Merry xmas

Transfer times in UPS – what are they and how will they affect my equipment?

Transfer time in UPS

UPS transfer time

“What is transfer time in UPS?”

The definition of transfer time, sometimes also called switchover time, says it is the amount of time a UPS will take to switch from utility to battery supply during a mains failure, or from battery to mains when normal power is restored. What this means is that when the main power supply fails, the UPS will need to switch to a battery mode to provide sufficient power and ensure smooth running of the attached equipment. The transfer time duration differs, depending upon the UPS system attached. It should, however, always be shorter than your equipment’s hold up time. Hold up time is the amount of time your equipment is able to maintain consistent output voltage during a mains power shortage.

Line interactive UPS systems, such as our VIX or VIS series, have transfer time typically between 2-6 milliseconds. For regular computer based systems, where hold up time is approx. 5 milliseconds, line interactive UPS systems are usually sufficient; however some computer systems, as well as other critical sensitive equipment, are more sensitive and require shorter transfer time. Hence in this case you should always choose UPS with zero transfer time like our VFI series.
If your equipment is critical and doesn’t tolerate even slightest power distortion, we recommend choosing online double conversion UPS technology with zero transfer time to ensure your equipment has the highest degree of protection.


Here’s a quick look up of transfer times for Power Inspired UPS systems:


Product UPS technology Typical transfer time
VIX3065 Line interactive UPS Typically 2-6 milliseconds
VIX1000N Line interactive UPS Typically 2-6 milliseconds
VIX2150 Line interactive UPS Typically 2-6 milliseconds
VIX2000N Line interactive UPS Typically 2-6 milliseconds
VIS1000B Line interactive UPS with sinewave inverter Typically 2-6 milliseconds
VIS2000B Line interactive UPS with sinewave inverter Typically 2-6 milliseconds
VFI1500B Online double conversion UPS Line to battery 0 milliseconds
Line to bypass Approx. 4 milliseconds
VFI3000B Online double conversion UPS Line to battery 0 milliseconds
Line to bypass Approx. 4 milliseconds
VFI3000BL Online double conversion UPS Line to battery* 0 milliseconds
Line to bypass Approx. 4 milliseconds
VFI6000BL Online double conversion UPS Line to battery* 0 milliseconds
Line to bypass Approx. 4 milliseconds
VFI10KBL Online double conversion UPS Line to battery* 0 milliseconds
Line to bypass Approx. 4 milliseconds
VFI1000T Online double conversion UPS Line to battery 0 milliseconds
Line to bypass Approx. 4 milliseconds
VFI3000T Online double conversion UPS Line to battery 0 milliseconds
Line to bypass Approx. 4 milliseconds
VFI10KT Online double conversion UPS Line to battery 0 milliseconds
Line to bypass Approx. 4 milliseconds
TX1K Online double conversion UPS with isolation transformer Line to battery 0 milliseconds
Inverter to bypass 4 milliseconds
Inverter to ECO Less than 10 milliseconds
TX3K Online double conversion UPS with isolation transformer Line to battery 0 milliseconds
Inverter to bypass 4 milliseconds
Inverter to ECO Less than 10 milliseconds
TX6K Online double conversion UPS with isolation transformer Line to battery 0 milliseconds
Inverter to bypass 4 milliseconds
Inverter to ECO Less than 10 milliseconds
TX10K Online double conversion UPS with isolation transformer Line to battery 0 milliseconds
Inverter to bypass 4 milliseconds
Inverter to ECO Less than 10 milliseconds

*unit doesn’t contain internal batteries, requires external battery pack/cabinet

Transfer times are dependent on which stage the power interruption occurs in. That’s why the transfer times stated in the above table are approximate.
As previously mentioned, transfer times also measure the amount of time it takes for the UPS to switch back to mains. The transfer back to mains power is always controlled with minimal interruption as this transfer is planned. As opposed to an unplanned mains failure which happens suddenly and hence a variation in the actual time taken.

transfer time

We have conducted a transfer time measurement using an oscilloscope (photograph above). For purpose of this exercise, we have used a standard line interactive UPS system and stimulated a power cut. The oscilloscope managed to capture the transfer time which on this occasion lasted 15 milliseconds, due to the original sine wave being interrupted at the peak of the cycle.

 “How does transfer time affect my equipment?”

That’s simple – if your equipments tolerance is below UPS transfer time, the UPS will not provide power in sufficient time in order to keep your equipment running.
Let’s say you have highly sensitive laboratory equipment with hold up time of 2 milliseconds. Line interactive UPS will not be sufficient in this case as it will not switch to battery mode quick enough. You will need to invest in an online double conversion UPS or Isolated online double conversion UPS in order to avoid any downtime. On the other hand if your equipment is a very basic computer workstation with approximate transfer time of 10 milliseconds, you can use the line interactive UPS system with peace of mind that your equipment is protected.

Transfer time is definitely one of the things you need to keep in mind while searching for suitable UPS. More factors affecting your choice of UPS technology are covered in this article.

How to save energy during Christmas season

How to save energy this Christmas

Energy saving during Christmas

With Christmas just around the corner, we thought it’s important to talk about energy usage during this jolly period. We all know that Christmas is the season of light, warmth and coziness. But with lots of Christmas lights comes the highly dreaded January energy bill. Here are some easy tips on how you can enjoy the Christmas magic without being out of pocket:

1. Choose LED Christmas lights 

Chrismas lights


Invest in LED mini Christmas lights over regular ones to save on energy bills. LED lights use around 90% less electricity and cost nearly 6 times less to run than regular lights. They create the same magical atmosphere – and they also have a longer life span!

2. Don’t leave your Christmas tree lights on when you’re out

Christmas energy saving

A decorated and lit up Christmas tree is definitely one of the most beautiful things about Christmas. But is it necessary to leave the tree lights on even when you are out of house or overnight? Turn them off when you’re not in the room and save money.


3. Don’t leave electrical appliances in stand-by mode

Energy saving christmas

TV, Hi-Fi, game consoles, laptops and phone chargers… The list goes on and on. And during Christmas period we tend to use these appliances more than ever! Did you know that leaving chargers plugged in alone can cost you up to £60 a year! Unplug your chargers if not in use and switch off your TV when you’re not watching it – it can spare you quite a few pounds (well… at least those in your wallet).


4. Candles

Saving energy during Christmas

Candles can not only create beautiful atmosphere – they can also save a few pence on your winter electricity bills, if you use them as a light source during cold winter evenings. Just make sure you don’t leave them unattended.


5. Use one or the other

Christmas lights saving energy

Have you decorated your lounge with lots of Christmas lights? If your answer is yes, consider if you really need to turn the main lights on as well. Stick to one or the other and save some cash.


6. Wash your Christmas jumpers at 30 degrees

Saving electricity

Did you know that washing machines use 40% less energy when washing at 30 degrees than washing at higher temperatures? Keep that in mind next time you wash your warm sweaters and you could save on your electricity bills.


7. Keep the temperature down

saving energy during Christmas

With all those Christmas lights on, cooking, baking and people around, the heat will naturally increase in your home so no need to have the heating up too high. It can also save you a little bit of money on energy bills.


8. Energy efficient cooking

save money at christmas

Cooking, baking, frying, boiling… it all costs money in energy. And during Christmas, when food is everywhere you look, it is even more noticeable. Try to cut down on energy costs by placing multiple dishes in the oven at the same time, or using smaller appliances such as microwave for smaller cooking tasks. Keeping the lids on your cooking pots can also shorten the cooking time, hence lower energy usage.


9. Peace of mind


Enjoy the season of peace truly peacefully knowing that your crucial equipment is protected. Have a UPS system connected to any of your critical load. Don’t have a UPS yet? Our handy UPS calculator tool will help you determinate which UPS is most suitable for your equipment.