Buying Guides

Honest, practical advice to help you choose the right power backup for your home or business — no jargon, just what actually matters. Drawn from our experience serving Delhi NCR since 1998.

7 min read

Inverter Battery Backup Time Calculator (100/150/200Ah)

Enter your load and battery size and get your real backup time in seconds — plus the simple formula, worked examples for 100Ah, 150Ah and 200Ah, and the honest reasons your backup runs shorter than the maths says.

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9 min read

How Many Watts Do Home Appliances Use? Power Chart

How many watts does an AC, fridge, fan or geyser actually use? Here is a clear India appliance wattage chart, what it means for your electricity bill and your inverter, and a calculator to total your own load.

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8 min read

1.5 Ton AC Power Consumption & Monthly Bill in India

A 1.5 ton AC is the biggest line on most Delhi summer bills. Here is exactly how many units it uses per hour and per month by star rating, what that costs, and the real ways to bring it down.

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9 min read

Which Inverter for a 1.5 Ton AC? (1, 1.5 & 2 Ton Sizing)

You can run an AC on an inverter — but only with the right size. Here are the exact VA ratings, battery banks and surge numbers for a 1, 1.5 and 2 ton AC, and an honest look at how long it will actually last.

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8 min read

Can a Refrigerator Run on an Inverter? Watts, Surge & Runtime

Will your fridge stay cold during a cut? Yes — if your inverter handles the startup surge. Here are real refrigerator wattages, the surge that catches people out, and how long a battery actually keeps it running.

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8 min read

Inverter Battery Price in India (2026): 150Ah & 200Ah

What should a 150Ah or 200Ah inverter battery cost, and why do quotes vary so much? Here is what actually drives the price, how old-battery exchange changes the number, and how to compare fairly.

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9 min read

C10 vs C20 Battery: Which Is Better for Real Backup?

Two batteries both say 150Ah, yet one is clearly stronger and pricier. The secret is the little C10 or C20 on the label — the discharge rate the Ah was measured at. Here is what it really means for your backup.

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12 min read

Inverter Battery vs UPS Battery: Can You Swap Them?

A Delhi dealer's first-principles guide to why inverter (tubular) batteries and sealed UPS (VRLA/SMF) batteries aren't interchangeable. The deciding factor isn't the chemistry on the label — it's the duty the battery was built for: deep cycling versus float/standby.

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14 min read

Inverter & Power Backup for a Clinic or Diagnostic Centre

A practical, two-tier guide to powering a Delhi GP clinic, pathology lab or pharmacy through long summer cuts: an online UPS so patient-connected equipment never glitches, plus a correctly sized inverter and battery that actually carries your medicine fridge for the full outage. Honest runtime math, no over-selling.

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12 min read

Do Solar Panels Work During a Power Cut? (And Why Not)

Most people are stunned when their new rooftop solar shuts off during a power cut, not realising it was built to. Here is the plain-English reason why, and a clear map of the three solar setups, including the cheapest one that simply adds solar charging to the inverter you already own.

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12 min read

Work-From-Home Power Backup: UPS for PC & Wi-Fi Router

A home inverter keeps your lights on, but its changeover gap is just long enough to reboot your desktop and kill your router mid-call. This guide explains the two-tier fix: a small zero-gap UPS on your desk and router, layered over the flat's inverter, so your work and your internet never blink.

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11 min read

Ceiling Fan Running Slow? Low Voltage and the Real Fix

Your inverter LED says "mains," but the fan crawls and the fridge runs hot. Here's the blind spot nobody explains: the grid is too low to be healthy, yet still high enough that the inverter refuses to switch to battery — leaving every appliance unprotected on a starved supply, and why a mainline stabilizer, not the inverter, is the fix.

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15 min read

Commercial Solar for a Delhi Office, Clinic or School

Commercial solar pays back faster than home solar, but only if you understand the things EPC decks skip: your commercial tariff, the year-one depreciation benefit, the Delhi generation incentive, and whether your sanctioned load will cap the system before your roof does. Here is the honest maths, worked on a real Delhi NCR example.

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13 min read

Find the Weak Battery in a Series Bank (Jumbo UPS)

If your high-capacity Jumbo Home UPS runs on 2, 4, or 6 batteries wired in series and backup time has collapsed, one weak battery is usually the cause. Here's how to find it, and why swapping a single battery into an aged string is almost always a false economy.

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4 min read

Getting Your Power Backup Ready for Delhi's Summer Power Cuts

A quick pre-summer checklist so your inverter, battery and AC stabilizer are ready before the cuts start.

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6 min read

7 Inverter Installation Mistakes We Fix Every Week (and How to Avoid Them)

The install mistakes that quietly kill your backup — straight from our service visits.

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9 min read

Generator vs Inverter vs Solar: The Right Backup for Your Home

A balanced, Delhi-specific guide to choosing between a generator, an inverter+battery, and solar, from a shop that sells all three.

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6 min read

Lithium vs Tubular Inverter Battery: Which Should You Buy?

Maintenance-free and long-lived, or lower upfront cost? Lithium vs tubular, compared head to head.

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8 min read

Can You Run an AC on Solar or an Inverter? What It Really Takes

Yes, an AC can run on an inverter or solar — but it is a much bigger, costlier system than fan-and-light backup, and here is exactly what it takes.

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5 min read

Monsoon & Your Inverter: Safety and Care in Delhi's Rains

Humidity, water and surges test your backup in the rains — here's how to keep it safe.

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6 min read

Is Solar Worth It for a Delhi Home? Costs, Savings & What to Expect

How much solar really saves a Delhi home, grid-tied vs hybrid, and what affects payback — in plain terms.

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9 min read

How to Cut Your Delhi Electricity Bill: Solar, Inverters & Simple Habits

From rooftop solar to phantom loads, here's how Delhi homes actually shave money off the bill — in order of how much each lever moves the needle.

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7 min read

MPPT vs PWM Solar Charge Controllers: Which Should You Choose?

PWM is simpler and cheaper; MPPT harvests more power, especially in winter and partial shade — here's how to pick the right one.

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5 min read

Online UPS Price in India (2026): 1kVA to 10kVA

Indicative 1kVA–10kVA online UPS prices, what moves them, and the real running cost — grounded in our live catalogue.

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5 min read

Pure Sine Wave vs Square Wave Inverter: What's the Real Difference?

Why fans hum on a cheap inverter, and when the pure sine wave premium is worth paying.

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8 min read

What Size Solar System Does Your Home Need? (by Bill & Roof)

Two numbers off your electricity bill and your roof decide your solar size — here's how to read them, plus why 3 kW is the Delhi sweet spot.

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6 min read

Online UPS for a Server Room, CCTV or Clinic in Delhi

Three real setups — server rack, CCTV/NVR and a clinic counter — sized properly, with runtime and install notes.

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6 min read

Voltage Stabilizer Buying Guide: Which kVA for AC, Fridge, TV & Whole House

AC, fridge, TV or the whole house? The right stabilizer type and size for each, by appliance.

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6 min read

How Long Do Inverters, Batteries, Stabilizers & UPS Really Last?

Realistic lifespans for each part of your setup — and what quietly shortens them.

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9 min read

Solar Panel Maintenance & Cleaning in Delhi: Dust, Pollution & Monsoon

In Delhi, the difference between a panel that pays back and one that quietly underperforms is often just keeping the glass clean and the wiring sound.

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5 min read

Inverter Battery Maintenance: 8 Simple Tips to Make It Last 5+ Years

A simple routine — water, ventilation, terminals and charging habits — that adds years to a tubular battery.

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8 min read

Solar Payback in Delhi: Will It Pay for Itself, and How Soon?

A transparent, Delhi-specific look at how soon rooftop solar actually pays for itself — with a worked 3 kW example, not a sales pitch.

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7 min read

Rooftop Solar in Delhi: Net Metering & the DISCOM Process, Step by Step

Sizing, the DISCOM application, the net meter, commissioning — the real steps to a Delhi rooftop.

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7 min read

What Size Online UPS Do I Need? (1kVA to 10kVA Sizing)

Total the load, add headroom, pick the kVA — with a sizing table and worked examples for a server, CCTV and a clinic.

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6 min read

Why Your Inverter Battery Drains So Fast: 7 Common Causes (and Fixes)

From low water to overload, the seven usual reasons backup time collapses — and what to do about each.

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8 min read

How Much Does Rooftop Solar Cost in Delhi? A 1kW–5kW Price Guide

What a 1, 2, 3 or 5 kW rooftop system really costs a Delhi home — and what you actually pay after both subsidies.

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5 min read

Online UPS vs Line-Interactive UPS: Which Do You Need?

PC and billing counter, or server room? A side-by-side comparison using real Microtek UPS ranges.

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8 min read

PM Surya Ghar Subsidy for a Delhi Home: How Much You Get & How to Claim

A Delhi home stacks two subsidies — up to ₹78,000 from the Centre plus Delhi's ₹10,000 and a monthly generation incentive — and here's exactly how to claim both.

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6 min read

Online UPS Buying Guide (India): When You Need One, How to Size It & Price

Double-conversion UPS, explained plainly: when you really need one, how big, how long it runs, and what it costs.

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6 min read

How Much Power Backup Do You Need? A Simple VA & Battery Sizing Guide

Turn your appliance list into the exact inverter VA and battery Ah you need, with a backup-hours table.

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7 min read

Tubular vs Flat-Plate vs Lithium: Which Inverter Battery Should You Buy?

Three battery families, three kinds of buyer — here's how flat-plate, tubular and lithium really compare for a Delhi home.

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12 min read

Inverter Battery Buying Guide: 150Ah vs 200Ah, Tubular Types & Price (2026)

A complete, no-jargon guide to choosing an inverter battery in India — capacity, type, real 2026 prices, lifespan and warranty — with a backup-time calculator and a model-by-model comparison from the Microtek Dura range we actually stock.

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6 min read

How to Choose the Right Inverter for Your Home

Which Microtek inverter fits a 1BHK, a 2BHK or a large home? A clear sizing table and plain-language advice.

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7 min read

Microtek vs Luminous Inverters: Which Suits Your Home?

Both Microtek and Luminous are genuinely good inverter brands — here is how we help Delhi homes pick the right one by load, budget and service, not by brand loyalty.

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7 min read

Choosing Power Backup for a Shop, Office or Clinic in Delhi NCR

Billing PCs, a clinic fridge, shop lighting — commercial backup done right, not guessed.

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6 min read

How to Size Your Home Backup, Room by Room (with a Worksheet)

Total your real load room by room, then convert it to the exact inverter and battery size.

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6 min read

Inverter Beeping or Not Charging? A Delhi Shop's Troubleshooting Guide

Decode the beeps and the no-charge problem, with safe checks you can do before calling us.

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7 min read

The Right Inverter for a 2BHK Flat in Delhi: A Real-World Setup Guide

A real 2BHK load breakdown, the model we'd actually fit, and the backup you'd get — no guesswork.

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Buying Guides – Inverters, Batteries, UPS & Solar | Nice Power System