Kunwer Sachdev · Mentor & portfolio architect

Su-vastika: engineering the future of backup power

Su-vastika (a Rotomag company) is the power-electronics venture where I serve as mentor — and where I helped build the patent and product portfolio from the ground up. The thesis is the one I have spent a career proving: build on invention, not imitation.

Headquartered with its own manufacturing in Ghamroj, Haryana, Su-vastika designs and builds its own lithium energy-storage and backup-power systems on the back of more than ten years of in-house R&D. Below are the two product lines I am most proud of — and the intellectual property that protects them.

Lift Inverter / ERD — no one gets trapped when the power cuts

The Lift Inverter / Emergency Rescue Device (ERD) is Su-vastika safety-first answer to elevator power failures. When the grid drops, the ERD takes over instantly, brings the lift gently to the nearest floor and opens the doors — no diesel, no fumes, no panic, and no one stranded between floors. The range spans 10 KVA to 200 KVA, from a single residential lift to heavy commercial and industrial elevator banks and escalators. Four core models anchor the line:

• 10 KVA ERD — motors up to 3.7 KW, ~4 hrs 40 mins backup
• 15 KVA ERD — motors up to 7.5 KW, ~2 hrs 15 mins backup
• 20 KVA ERD — motors up to 11.5 KW, ~1 hr 30 mins backup
• 30 KVA ERD — motors up to 15 KW, ~2 hrs 10 mins backup

Each unit is engineered for continuous, silent operation and built around Su-vastika own control electronics — purpose-built rescue safety of the kind increasingly written into modern building codes.

ESS & lithium BESS — retiring the diesel generator

Su-vastika Energy Storage Systems (ESS) and Battery Energy Storage Systems (BESS) are designed to do one thing decisively: replace the diesel generator. Built around LiFePO4 (lithium iron phosphate) banks rated for roughly 6,000 charge cycles, they deliver clean, silent, fuel-free backup for homes, shops, offices and factories. The range runs from 4 KVA to 100 KVA in both single-phase (1P) and three-phase (3P) configurations:

• ESS 10 KVA / 9 KWh (1P) — homes and small businesses
• BESS 10 KVA / 18 KWh (3P) — commercial and industrial
• BESS / ESS 15 KVA / 18 KWh — medium-to-heavy commercial
• BESS 30 KVA / 36 KWh (3P) — largest industrial storage unit

Because the cells, the battery-management system and the power electronics are developed and integrated in-house, the systems are tuned as a single unit. That integration is exactly why partners are taking notice: in 2025 Su-vastika joined forces with Statcon Energiaa to deploy lithium BESS across India and abroad, and secured strategic investment to scale manufacturing.

The patent portfolio — invention as the business model

11 granted · 14 filed · 25 total

What ties it together is intellectual property. Su-vastika has filed 25 patents, with 11 already granted by the Indian Patent Office and 14 more applications in process — each granted patent backed by an official government certificate. The portfolio spans the company full technology stack:

• Lithium energy storage
• BESS architecture
• Solar-hybrid power conversion
• IoT-based monitoring and control
• Lift-rescue safety

Building this portfolio is the work I am proudest of at Su-vastika. It is what turns a manufacturing business into a defensible technology company — the same principle that powered my earlier work building India inverter industry: own the invention, and the market follows. For founders and partners evaluating Su-vastika, the patents are not decoration. They are the moat.

---

Explore the full product range, the patent gallery and certifications:

Visit suvastika.com →