UPS Run Time/Battery Backup Time Calculator

Calculate the estimated run time or battery backup time of specific models using the load in watts or any uninterruptible power supply (UPS) using the device load (in watts), power factor, number of batteries, battery voltage, and battery amp hours.


Calculate Estimated Backup Time By Model:
*This Calculator Is Extremely Accurate As It Is 
Built To Match The Design Specifications Of The UPS



Calculate Estimated Backup Time By Specifications:
*This Calculator Does Not Account For Inverter/UPS Manufacturer
Battery Protection Circuits Which May Cut Off Battery
At 10-35% Instead Of 0%. Use Power Factor Of 0.65 To Estimate
Impact Of Battery Protection Circuit.

How To Calculate Battery Backup UPS Time

Need help calculating backup time for one of our models? Open a chat (bottom right) or call us at (855) 330-7799 and select option 3 for the on-call technician.

*Note: We only provide support for our models. We can not provide support for other manufacturer's products.