How to Choose a UPS for Your Computer During Load-Shedding
By Brotherhood IT Team - 15/09/2026 - 0 comments
Load-shedding and voltage fluctuation can corrupt files, damage hard disks and even burn a power supply. A UPS (Uninterruptible Power Supply) protects your computer and gives you time to save work. Here is how to pick the right one.
UPS vs IPS: What Is the Difference?
An IPS is designed for lights and fans and switches over too slowly for computers. A UPS switches in milliseconds, so your PC does not restart when the power goes.
Types of UPS
- Offline UPS: affordable, ideal for a single home or office desktop.
- Line-interactive UPS: regulates low and high voltage without using the battery, good for areas with unstable voltage.
- Online UPS: power always flows through the inverter with zero transfer time, recommended for servers, network racks, CCTV and sensitive equipment.
- Mini DC UPS: keeps routers and ONUs running for hours.
How to Calculate the Size
- Add up the power (watts) of your PC and monitor. A typical office PC with monitor uses 100-200W; a gaming PC can use 400W or more.
- Offline UPS real capacity is roughly 60% of the VA rating (650VA ≈ 360-390W).
- Leave 20-30% headroom so the UPS is not overloaded.
| Setup | Suggested UPS |
|---|---|
| Office PC + monitor | 650VA offline |
| Mid-range PC + larger monitor | 1000-1200VA |
| Gaming PC | 1500VA or higher, line-interactive |
| Server / network rack | 1kVA+ online UPS |
Backup Time
A desktop UPS normally gives 5-20 minutes, enough to save and shut down safely. For longer backup, choose models that support external batteries.
Battery Care
- Replace UPS batteries every 2-3 years.
- Keep the UPS in a cool, dry, ventilated place.
- Do not plug printers, heaters or kettles into the UPS.
- Ensure proper earthing in your electrical wiring.
Browse offline UPS and online UPS models from MaxGreen, SANTAK, KSTAR and more at Brotherhood IT.