Blog
329 articles on UPS, lithium battery, solar hybrid and energy storage technology.
Difference Between MPPT and PWM Solar Charge Controller — and Why India Still Buys the Wrong One
A confession from the Inverter Man of India. For more than a decade — first at Su-Kam, now as mentor at Su-vastika — I have tried my level best to make people understand the difference between MPPT and PWM solar charge controllers. We made videos that collected lakhs of views,…
Why We Built India’s First Free ERD Battery Sizing Calculator — Zero-Switch Lift Inverter Technology Explained
Su-vastika explains why we built India’s first open ERD sizing calculator at LiftInverter.com. Understand zero-switch 3-phase technology, battery sizing for SMF, Tubular and Lithium batteries, and how lift engineers can specify the right Emergency Rescue Device for any building — free, open, field-tested data from 200+ real installations.
Solar hybrid PCU MPPT 5.5KVA technology described
The Su-vastika 5.5KVA Solar Hybrid PCU represents a significant advancement in solar energy management systems, particularly for residential or small commercial use in India. Su-vastika has designed a Solar PCU based on MPPT which is based on future AI based technology as the cards designed with advanced microprocessor-based technology has the flexibility to communicate and update […]
Benefits of Bluetooth Hybrid Solar PCU
What are the Benefits of Bluetooth Hybrid Solar PCU? Bluetooth is a wireless technology that monitors inverters/UPS/Home UPS/ Solar Hybrid PCU. They offer several advantages over simple Inverters/UPS. In this Solar Hybrid PCU model, we have the provision for monitoring Solar parameters like Sharing of charging through the Solar and Grid, Solar Power Wattage coming […]
C10 vs C20 Tubular Battery: the Specs Con, the Blast Risk & How to Test It
A public-interest guide: what C10 vs C20 really means, why makers hide real battery specs, how fast solar charging can blow up a tubular battery, a 5-minute showroom test, and where lithium (C1) fits.
Lithium Battery Prices Drop in India for Inverters & UPS
Power Up Your Savings: Lithium Battery Prices Drop in India for Inverters & UPS Power Up Your Savings: Lithium Battery Prices Drop in India for Inverters & UPS Lithium-ion batteries are becoming increasingly popular for inverters and UPS systems in India due to their numerous advantages over traditional lead-acid batteries. They offer a longer lifespan, deeper […]
Inverter or UPS Not Working? Troubleshooting Guide: 6 Common Problems & Fixes
Inverter not working? Diagnose the 6 most common inverter/UPS problems from the warning lights — no output, battery-low shutdown, overload, short circuit, mains not sensing and MCB tripping — with step-by-step fixes from Su-vastika's own service manual.
UPS Mode vs Wide UPS Mode in Inverters (2026): Which to Choose
Every household or office experiences voltage and frequency fluctuations. For example, when the Voltage goes down, we can see the fan speed going slow, the light going dim, or the water cooler fan speed going slow, called the Low Voltage condition. The Wide UPS and UPS feature in our battery inverter/UPS plays a vital role […]
5 kVA Lithium Inverter (Wall-Mounted): 1 Battery, Runs Your AC
The Su-vastika 5 kVA lithium inverter is a wall-mounted, space-saving backup that replaces 4 lead-acid batteries with one lithium bank, runs even an air conditioner, and is controlled by a Bluetooth/Wi-Fi app.
Best Lithium Inverter in India (2026): How to Choose the Right One
How to choose the best lithium inverter in India — a buyer's checklist covering maker experience and patents, sleep mode, pure sine wave, six-stage/ATC charger, overload capacity and in-house battery, with a comparison table and FAQs.
Why Is My Inverter Not Charging the Battery? Causes & Fixes
Inverter not charging the battery? Most causes are simple — a tripped fuse, loose terminal, low mains voltage or a tired battery. Here's how to diagnose and fix every common reason an inverter/UPS stops charging.
Battery capacity C1,C10, and C20 explained
In battery technology, C1, C10, and C20 are terms used to describe the discharge rate of a battery. One can describe it as battery capacity based on the C rating as the battery capacity will vary with the variation of load applied on the battery. These ratings indicate how much current a battery can deliver […]