The moment power is restored after a Mumbai outage, often carrying a brief voltage spike well above normal mains level, does more damage to a computer's power supply and motherboard than the outage itself ever does. Sizing a UPS correctly against your actual equipment's wattage, and choosing the right type for frequent small fluctuations rather than just full outages, matters more than any brand name on the box.
Why the Power Coming Back On Is the Dangerous Moment
An outage on its own just stops power, annoying, and it risks unsaved work, but otherwise harmless to the hardware itself. The voltage spike that can accompany restoration is what actually stresses a power supply unit and, over repeated occurrences across a monsoon season, shortens its working life or damages it outright.
Sizing a UPS Correctly for Your Setup
Add up the wattage of what you're protecting, a typical desktop power supply draws somewhere between 300 and 500 watts under load, plus 30 to 50 watts for a monitor, then divide by a power factor of roughly 0.8 to estimate the VA rating you actually need. Buy a UPS with some margin above that number rather than exactly at it, since running a UPS near its maximum rated load shortens both its runtime and its battery life.
Line-Interactive vs Offline/Standby UPS
An offline or standby UPS is the cheapest option, switching to battery only after it detects a full outage, which involves a brief transfer gap that's fine for most ordinary desktop use. A line-interactive UPS actively corrects minor voltage sag and surge without switching to battery at all, which suits Mumbai's frequent small fluctuations better than an offline unit, and is worth the extra cost for anything running continuously or holding sensitive data.
What a UPS Does NOT Protect Against
A UPS protects against power-side surges but does nothing for a surge traveling in through a phone, ethernet, or cable line, which can still happen during a nearby lightning strike. A basic surge-protected power strip for peripherals connected through other cables still matters even with a UPS already in place upstream, it isn't redundant.
Maintenance That Most People Skip
A UPS's internal battery degrades over roughly 2 to 3 years of regular charge and discharge cycles even if the unit never visibly fails or shows an error light. A UPS running on a dead internal battery gives zero actual protection during an outage while still looking completely normal when plugged in, so it's worth periodically testing by briefly unplugging the wall feed and confirming it genuinely holds the load rather than assuming it still works.
If a surge has already damaged a desktop, our motherboard repair and doorstep diagnostic service covers the MMR with a ₹350 inspection fee refunded against the repair and a 90-day warranty on parts fitted.
