Knowledge Base
Expert buying guides, technology comparisons and independent analysis for inverters, batteries, solar panels and energy storage systems in India. No fluff, no affiliate bias — just engineering-grade information to help you make the right decision.
The Plastic-Body Inverter: How Chic Became India Today's Innovation of the Decade
Kunwer Sachdev on India's first plastic-body inverter — the Chic, launched at Su-Kam in the mid-2000s. Named Innovation of the Decade by India Today. Why we chose plastic when the entire industry used metal, and how it democratised power backup for Indian homes. Part 03 of Source Code of an Industry.
3 Aug 2026
Founder InsightSeventy-Seven Patents: The R&D Legacy of Su-Kam Power Systems, 2003 to 2017
Kunwer Sachdev on the 77 patent applications Su-Kam Power Systems filed at the Indian Patent Office between 2003 and 2017 — the portfolio, the five technology families, the twelve granted patents with numbers, the filing discipline, and the five 2017 forward-looking provisional applications. Part 02 of Source Code of an Industry.
2 Aug 2026
Founder InsightFrom Analogue to PIC16F72: The Two Inventions That Started India's Inverter Industry
Kunwer Sachdev on India's first MOSFET inverter — started in 1998, two years of R&D, commercial by 1999, scaled in 2000 — and the 2001 PIC16F72 microcontroller inverter. The two India-first inventions that predate Su-Kam's 77-patent portfolio and that every Indian inverter company followed. Part 01 of Source Code of an Industry.
1 Aug 2026
Founder InsightBeyond Inverters: Why I Built GiftedKids.in — India's First Gifted Education Platform
Kunwer Sachdev, the Inverter Man of India, discovered he was gifted at 47. Here is why he co-founded GiftedKids.in — India's first platform to identify and nurture gifted children.
19 Jun 2026
Founder InsightKunwwer.ai: The AI Co-Pilot Built on 35 Years of Inverter & Power Industry Experience
Kunwwer.ai encodes Kunwer Sachdev's 35+ years of building Su-Kam into an AI platform — legal guidance, export strategy, and marketing playbooks for Indian energy and manufacturing founders.
17 Jun 2026
Battery ScienceHow Much Backup Do 150Ah and 200Ah Batteries Really Give? My Lab Tests, in Plain Words
I discharge-tested 150Ah and 200Ah tubular batteries at real home loads and logged every minute. Here is what each battery actually delivers, why heavy loads silently destroy battery life, and why light-load users top up water less and get years more service.
7 Jun 2026
Battery Buying Guide6 Questions You Must Ask Before Buying an Inverter Battery in India
India's battery industry hides the specs that matter most. Here are 6 questions — from a 30-year industry insider — that every buyer must ask their dealer before paying a rupee.
7 Jun 2026
Battery SafetyThe Charging Current Nobody Prints on Your Inverter Battery — And Why People Are Dying
India's battery labels show the brand name and Ah rating. They do not show the one number that prevents fires and deaths — the maximum safe charging current. A decade of warnings, ignored.
7 Jun 2026
Battery Buying GuideWhen the Ah Rating Disappears: How Local Battery Brands Hide the Number That Matters Most
India's established battery brands print Ah on every battery. A growing number of local manufacturers do not — and that is not an accident. A decade of warnings from an industry insider.
7 Jun 2026
Expert InsightNFC Is Quietly Changing How India Manages Power: Inverters, Solar, EV Charging
NFC technology is transforming inverters, solar farms, EV charging piles, and industrial motors. Patents from China, Saudi Arabia and Japan reveal how tap-to-diagnose is becoming the universal maintenance interface for power electronics.
7 Jun 2026
Expert InsightLithium vs Lead-Acid Battery India 2026: The Honest Guide
Lithium vs lead-acid inverter batteries in 2026 — cost, lifespan, charging speed and ROI for Indian homes. Which battery is actually worth the money?
1 May 2026
Solar & BESSSolar Off-Grid vs On-Grid vs Hybrid: India Guide 2026
Off-grid, on-grid, or hybrid solar for your Indian home? Understand the real differences in cost, reliability, and net metering before you invest.
18 Apr 2026
Expert InsightBest Inverter UPS for Home in India 2026: Buyer's Guide
How to choose the best inverter UPS for your Indian home in 2026. Covers Luminous, Microtek, V-Guard, and more — wattage sizing, waveform, and value picks.
11 Apr 2026