Blog
335 articles on UPS, lithium battery, solar hybrid and energy storage technology.
Solar PCU LCD Display Messages Explained — Backup Mode, Mains Mode, Faults & Rotary Switch
The LCD on your Solar PCU is telling you something specific every time it shows a message. This guide decodes every display message — backup mode, mains mode, overload, battery low cut, high/low cut, solar mode — plus the three rotary switch positions and what they do.
Solar Hybrid PCU Wiring & Earthing Guide: Wire Sizes, Panel Config & Safety Rules
Most solar PCU problems start with the wiring — undersized battery cable, wrong MCB type, missing earthing. This guide gives exact wire sizes for every circuit, solar panel series/parallel configuration, earthing rules under IS 3043, and the DC vs AC MCB distinction that prevents fires.
How to Connect Your Solar PCU to the App: Bluetooth and Wi-Fi Step-by-Step Guide
The BLE and Wi-Fi dongle turns your Solar PCU into a smart system you can monitor and control from your phone. This step-by-step guide covers both Bluetooth and Wi-Fi connection methods — dongle setup, scanning, pairing, OTP login, and adding your device for remote monitoring.
How to Install a Solar Hybrid PCU: Complete Guide — Wiring, Safety & LED Indicators
A Solar PCU installed incorrectly underperforms or fails — no matter how good the unit. This complete guide covers wire sizing, safety rules, panel configuration, the installation diagram, and every front panel LED explained. By Kunwer Sachdev, who designed these systems at Su-Kam.
Su-vastika Solar PCU Mobile App: Every Setting Explained by its Creator
Nobody explains their own app, setting by setting. The Su-vastika Solar Hybrid PCU mobile app — on Google Play and the App Store — explained screen by screen by its creator…
Inside a Solar Hybrid PCU: MPPT Internal Circuitry Explained by its Designer
What's really inside a solar hybrid PCU? I have been designing Power Conditioning Units since 2011, when my R&D team built one of India's first integrated solar PCU circuits — an MPPT charge controller, grid charger, pure sine wave inverter, isolation transformer and…
Su-vastika 2.5kVA Solar Hybrid PCU with MPPT: Features & Mobile App
Smart solar in a compact size. The Su-vastika 2.5kVA solar hybrid PCU combines MPPT solar charging with Bluetooth + Wi-Fi connectivity, so you can monitor solar generation, battery charge and load sharing live on a dedicated mobile app. Here's everything the 2.5kVA model can do…
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.
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 […]
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 […]
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 […]