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.

December 3, 2025 - You may also use the Select Number of Battery Modules drop-down menu to find runtime information, example: OL10KRT3UHW + 7EBMs. As you move the cursor around the chart, a popup displays runtime estimates in minutes for each load by watts.

Formula: minutes ≈ (V × Ah × strings × efficiency × safety × 60) ÷ load (W). Use the calculator below, compare minutes to your shutdown or generator-start target, then size amp-hours in the UPS battery calculator.

March 14, 2025 - The UPS Runtime Calculator works out the runtime you will get for any UPS battery configuration. Just enter the load, the battery capacity and quantity.

Calculate how long your APC UPS will run during a power outage. Enter your UPS capacity and load to get accurate runtime estimates for your battery backup system.

January 1, 2024 - Optionally estimates required batteries when you enter a target backup time. Ideal Runtime (hours) ≈ Usable Battery Energy (Wh) ÷ Load Power (W) The calculator starts there, then reduces the result with practical planning factors.

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.

This calculator helps you find out the amount of time that the UPS will be able to keep the connected equipment running in the event of a power failure. ... Runtimes based on testing fully-charged, new batteries at normal operating conditions.

March 14, 2025 - This calculation will help you determine the appropriate UPS size for your devices. ... Enter the battery rating, voltage, and number of batteries to calculate the runtime of your UPS.

Calculate UPS runtime, load, capacity, and battery size with one unified UPS calculator. Plan backup power for servers, home systems, and industrial equipment.

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.

July 3, 2024 - It can be represented as Wt = W1 + W2 + … · Amperage calculation can be found by Total weight / volts. Here, the volt is the battery voltage. A = Wt / V. The UPS device runtime is the ratio of the over total load and battery capacity.

March 5, 2025 - UPS Runtime (in hours) = (Battery Capacity in Ah * Battery Voltage in V) / Load in Watts. This gives you a basic idea. But, you can get a more precise estimate with more detailed information from an ups runtime chart.

Our free online UPS runtime calculator helps you estimate battery backup duration quickly and easily.

Based on your operational set-up and the criticality of the equipment being supported, decide how long your UPS needs to support the load when running on battery. UPS runtime is determined based on the amount of load supported and the technical characteristics of a specific UPS. Within the UPS Selector tools, runtime is calculated based on the required load provided by the user and the UPS specifications from Schneider Electric.

December 8, 2020 - Access an interactive graph providing detailed run time information for various load levels and extended runtime battery cabinets for the Liebert GXT5 UPS system.

A UPS Runtime Calculator is a tool designed to estimate the duration for which an Uninterruptible Power Supply (UPS) can provide power to connected devices during a power outage. This calculation is crucial for ensuring that critical systems ...

February 11, 2026 - If the UPS provides battery specs, use this formula: Battery Wh = battery voltage × amp-hours × number of batteries · Estimated runtime = battery Wh × efficiency factor ÷ load watts

How Much Power Will Your UPS Use? Choose the right UPS, uninterruptible power supply, based on your total power consumption, Eaton UPS Selector

September 20, 2024 - UPS Run Time / Battery Backup Time Calculator Use this manual / generic battery calculator: calculate the estimated operating time or the battery backup time of any UPS using the load in Watt, device efficiency, number of batteries per strings, strings number and the voltage of the battery capacity.