An Online UPS continuously provides power from the inverter, ensuring zero transfer time and pure sinewave output — ideal for sensitive equipment.
An Offline UPS switches to battery only when mains fail, which may cause a small delay but is more economical for general devices.

Backup duration depends on the UPS capacity and battery size.
For example, a 1kVA UPS with a 150Ah battery can typically deliver 3–4 hours of backup under standard load conditions.

ESSMA Tubular Batteries are ultra low-maintenance, designed with advanced vent plug systems that minimize acid fumes and water topping requirements.

Yes, ESSMA UPS models are built for both commercial and residential use. They safely power computers, routers, LED TVs, printers, and even small motors or refrigerators depending on model capacity.