This calculator uses a simple energy-based runtime estimate that combines load power, battery string voltage and capacity, UPS efficiency, permitted depth of discharge, temperature factor and aging factor.
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Our free online UPS runtime calculator helps you estimate battery backup duration quickly and easily. The process is fast, straightforward, and completely free—no registration or Signup required!
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UPS Battery Backup Time Calculator estimates the amount of time your Uninterruptible Power Supply (UPS) can maintain power during outages.
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Find the perfect UPS system in two easy steps! Calculate the total power consumption of connected devices then choose a runtime so get your recommendations.
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This convenient calculator gives you the estimated runtime for any of our UPS models, showing you the total load in watts and the runtime in minutes. You may also use the Select Number of Battery
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This calculator provides a simple way to estimate the backup time for UPS systems, aiding in the selection and planning process for ensuring uninterrupted power supply.
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Calculate how long your UPS battery backup will last during a power outage. Enter your UPS power supply specifications and equipment power requirements below for an accurate runtime estimate.
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This calculator provides a reliable estimate based on standard formulas. Actual runtime may vary by 10-20% due to factors like battery age, temperature, and specific equipment power factors.
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Calculate the estimated run time of your UPS using the device load (in watts), power factor, number of batteries, battery voltage, and battery amp hours.
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Accurate run time estimates are crucial for maintaining productivity and protecting sensitive equipment. Knowing how long your UPS will last can prevent data loss and hardware
Learn MoreV4V Super Power Africa is a leading energy storage equipment manufacturer and integrator based in South Africa, serving the African continent. We specialize in lithium‑ion battery storage, sodium‑ion battery storage, system‑level battery management (BMS), energy conversion systems (PCS), communication cabinets for telecom infrastructure, commercial & industrial energy storage cabinets, integrated photovoltaic storage systems, distributed energy resources, deep discharge applications, and turnkey energy storage solutions. As a full‑service energy storage equipment manufacturer, we also provide containerised BESS, modular battery racks, backup emergency power, and zero‑carbon microgrids. Our advanced lithium‑ion and sodium‑ion solutions ensure safety, scalability, and high performance for residential, commercial, industrial, and utility projects across Africa.
Our modular energy storage portfolio ranges from compact distributed energy resources to 20ft/40ft mobile containers and outdoor all‑in‑one storage cabinets. We are a leading energy storage equipment manufacturer, offering communication cabinets for 5G/telecom, server racks for data centers, and lithium‑ion & sodium‑ion battery modules with integrated BMS. Our stackable design allows flexible capacity expansion, while our grid‑forming technology ensures stable off‑grid operation. Whether for off‑grid power systems, backup emergency power, PV+storage integration or large zero‑carbon parks, our products feature advanced thermal management, PCS and EMS integration, deep discharge cycling, and compliance with South African and international standards. We also provide professional energy storage system installation and after‑sales support across Africa.