Backup power supply for PC

Backup power supply for PC

If you use a desktop computer, you know that it needs to be plugged into an electrical outlet to operate. What would happen if there was a power outage and your computer was not plugged in? It would likely shut down, and any work you were doing would be lost. A backup power supply for your PC can help prevent this from happening. In this blog post, we will discuss what a backup power supply is and how it can help protect your computer during a power outage. We will also provide some tips on choosing the right backup power supply for your needs.

A power outage can be a devastating experience, leaving you without access to the devices that are important to you. One way to protect yourself from these outages is by having a backup power supply for your pc. This will ensure that you still have access to your files and programs in the event of an unexpected power loss. There are many different backup power supplies on the market, so it’s important to do your research before making a purchase.

What is a UPS and why do you need one?

A UPS (Uninterruptible Power Supply) is a device that provides continuous, clean power to your computer and other devices in the event of an outage. This means that your pc will still be able to operate, even if there is a power loss or disruption. A UPS can also help protect against voltage surges and line noise, which can damage electronics.

Best UPS systems for Australia

Cyberpower BRICs series

The BRICs series from Cyberpower offers a complete line of power protection products, with models for different systems and applications. The 600G model is designed to provide guaranteed power for PCs and workstations, including TVs and other electronics. This UPS uses pure sine wave output, which ensures compatible computer components receive the best possible steady power supply. It also has an ultra-fast recharge time of just 3-4 minutes – less than half the time as some competing models on the market. When it’s running low on battery or sensing a power outage, the BRICs will shutdown all devices at pre-determined intervals until power is restored. Other features include load-leveling to reduce stress on the internal battery, a pure sine wave output inverter, power-saving features, and a programmable LCD remote. This UPS is available now through local dealers for about AUD 120 with a three-year limited warranty.

Eaton 5S 1200 VA

This affordable UPS provides effective protection against surges, spikes, and sags in input voltage, as well as extended battery backup time when the power fails. It is ideal for protecting personal computers, office equipment, telecoms, and data centers that receive the best possible steady power supply.


Regardless of your power needs, there is an APC UPS product for you. They offer units with the capacity to power a whole office building or as little as a single PC and monitor, all designed for maximum protection of electronic equipment from blackouts, brownouts, sags, and surges. A battery backup offers additional protection by providing up to one hour of emergency power to keep critical systems running during a blackout. That way IT can save their data and shut down properly.

Our personal favorite: APC Back-UPS Pro 650VA/390Watts UPS

UPS Buying Guide: What kind of UPS should I get?

Different setups require different levels of power protection, so it’s important to consider three key factors – time, devices, and voltage – when deciding how much power you need from a UPS.

Power Consumption

How many watts does your pc need? If your computer pulls 300 watts at startup but only uses 60 watts under normal operation, a 600-watt model will suit your needs perfectly. Just make sure that the battery inside the UPS has enough juice to handle anything you throw at it – if the battery is undersized for the computer equipment being protected, electrical components can be damaged by an overload or constantly drained during normal operation. In general, keep in mind that not all products are equal; the only way to know exactly how much power your equipment consumes is by checking with its manufacturer. The total wattage of the products you want to protect needs to be slightly higher than the wattage output of your UPS or it won’t fit.


You can choose either a line interactive or double conversion (online) model for maximum protection against blackouts and other power failures. Line-interactive UPS units vary their voltage depending on incoming power quality, making them ideal for locations where voltage fluctuation is an issue. Double-conversion online UPS provides constant, pure sine wave output. For most home users, a double-conversion unit – especially one that includes an LCD read-out – should handle all of their power protection needs.

Battery Backup

All UPS units come with batteries. There’s no such thing as a battery-less uninterruptible power supply since they’re required to provide backup power in case of an outage. The length of time the batteries will last is referred to as “runtime.” For example, if your PC consumes 500W and you have a 1kVA (1000VA) model, it should keep you running for about eight minutes depending on how much battery life is left and other factors. If you want longer runtime, consider doubling or even tripling the wattage rating so that enough voltage remains available during times of high load. You can also purchase sealed lead-acid (SLA) or gel cell replacement batteries from your local electronics store or online retailer. A note for laptop users: Instead of having a backup battery, most laptops get their power from the main battery until it runs out, at which point they switch to wall power. If you want UPS-style protection but don’t want to spend the extra money on a full backup system, look into purchasing an emergency power supply that can keep your PC running for a few minutes after the rest of the house goes dark.


You should also consider where you’re going to put your UPS and how much space you have available. Vertical units are generally less expensive than horizontal ones because they save on precious floor space, though some people might not like how high up the unit sticks out of the socket. Horizontal models can be stacked on top of each other for a larger footprint, but the power unit itself might stick out further than is convenient.

If you don’t have room in your office or entertainment center for a UPS, consider putting it next to an exterior window and orienting the plug so that the cord points inside when plugged into its socket. That way you can keep all your wires hidden and just run the one cord outside if necessary – perfect for any home theater PC users who don’t want their UPS’s unsightly nature clashing with their home decor.

If you need any assistance deciding the best UPS system for your small business use, our business IT support specialists can always guide you through the process.

I am a computer engineer holding a bachelor's degree in Computer Science, complemented by a Master's in Business Administration from University of Strathclyde, Scotland. I currently work as a Senior IT Consultant in Melbourne, Australia. With over 15 years of...