Pure Sine Wave Lithium UPS 5500 — Power That Never Blinks
Meet the Pure Sine Wave Lithium UPS 5500 — a clean-power inverter built around an intelligent 44 V lithium battery system and ready for solar from day one. Grid-quality electricity for your home or office, even when the grid has other plans.
One box, zero compromises
Most backup systems make you choose: clean power or affordability, big capacity or smart charging, inverter or solar. The Pure Sine Wave Lithium UPS 5500 refuses to pick. It runs your sensitive electronics on true grid-quality sine wave power, charges a modern lithium pack with a brain that protects every cell, and slots straight into a solar setup so the sun does the heavy lifting whenever it can.
Whether it is a flickering supply, a multi-hour outage, or you are simply tired of paying for power you could be harvesting for free — this is backup that quietly does the right thing in the background.
What makes it special
Engineering you will feel, even if you never read a spec sheet.
True Pure Sine Wave Output
A smooth, grid-identical waveform — not the choppy “modified” kind. Your fridge, computers, TVs, medical devices and motors run cooler, quieter and longer, with no buzzing or overheating.
Intelligent Lithium Charging
A multi-stage charge cycle — boost, absorption and float — tuned for a 44 V lithium NMC pack. It tops up fast, then eases off gently to maximise battery life instead of cooking it.
Solar-Smart by Design
Pairs with an MPPT solar charge controller and intelligently prioritises sunshine. Once the battery is comfortably charged, it leans on solar even while mains is available — so you spend less from the grid.
Seamless Changeover
When the grid drops, the switch to battery power is fast and synchronised to the mains waveform — so your devices barely notice, and the lights stay on without a stutter.
All-Round Protection
Built-in guards for over- and under-voltage, overload, short-circuit, over-temperature and battery high/low limits. If something is wrong on the line or the load, it reacts in milliseconds.
Smart Monitoring & Sleep
On-board intelligence tracks battery state-of-charge and system status, drives clear LED feedback, and slips into a low-power sleep mode when the battery runs low — saving energy and protecting the pack.
Built around the battery — the way lithium deserves
Lithium is not just “a better battery.” Treated right, it pays you back with years of dependable cycles. This UPS is engineered to treat it right.
The numbers, for the spec lovers
For installers and technically-minded buyers who like to know exactly what they are getting.
| Specification | Detail |
|---|---|
| Power Rating | 5500 VA pure sine wave inverter / UPS |
| Output Waveform | True pure sine wave, 50 Hz (60 Hz capable) |
| Battery System | 44 V nominal Lithium NMC (≈48 V class pack) |
| Charging Profile | Multi-stage: boost → absorption → float, temperature-compensated |
| Solar Support | MPPT solar charge controller ready, with solar-priority energy management |
| Mains↔Inverter Transfer | Fast, waveform-synchronised changeover |
| Protections | Over/under voltage, overload, short-circuit, over-temperature, battery high/low cut-off, fuse-blown detection |
| Energy Saving | Low-battery sleep mode; intelligent solar utilisation |
| Monitoring | State-of-charge tracking, LED status indicators, serial data communication |
| Warranty | 37 months |
*Exact configuration values may vary by model and regional setup. Confirm final specifications with your dealer or installer.
Who it is built for
It is a natural fit for homes that need whole-room or whole-floor backup without the hum and heat of cheaper inverters; for small offices and shops that cannot afford for the tills, routers or computers to go dark; and for anyone going solar who wants their backup and their panels to work as one smart system instead of two boxes that ignore each other.
Learn more & where to buy
Explore the official product pages and trusted marketplace listings.
Ready for power you can forget about?
That is the highest compliment a backup system can earn — that you stop thinking about outages altogether. Talk to us about the Pure Sine Wave Lithium UPS 5500 and find the right setup for your space.
Get a Quote →Kunwer Sachdev — the “Inverter Man of India”
Kunwer Sachdev is an Indian entrepreneur, innovator and renewable-energy expert, widely known as the “Inverter Man of India” and the “Solar Man of India.” He founded Su-Kam Power Systems — one of India’s largest power-backup brands — pioneered the plastic-body inverter recognised by India Today as an Innovation of the Decade, and holds 25+ patents in power electronics and clean energy. Today he mentors Su-vastika and is the founder of Kunwwer.ai, an AI co-pilot for Indian founders. He writes on lithium energy storage, solar hybrid systems, power backup and entrepreneurship.
More about Kunwer Sachdev →
Disclaimer: It is important to note that while Mr. Kunwer Sachdev founded Su-Kam Power Systems, he is no longer associated with the company as of 2019. Any information regarding his involvement in the company's operations, strategies, or future plans reflects his tenure prior to that date. Therefore, any discussions or analyses of Su-Kam Power Systems should be considered in the context of his past contributions and not his current association with the company. He currently mentors Su-vastika.
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About the Author
Kunwer Sachdev — known as the Inverter Man of India and the Solar Man of India. Founder of Su-Kam, holder of 106 technology filings, and mentor to Su-vastika. Read his story →
Follow on LinkedIn · kunwersachdev.com
Kunwer Sachdev exited Su-Kam in 2019 and is not responsible for any activity of the company since. Full disclaimer →
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25+ patents · Made in India · 10,000+ installations